Ferrite For Switching Power Supplies
TECHNICAL DATA
EI Cores (EI12.5 to EI60)
EE Cores (EE10/11 to EE62.3/62/6)EER Cores (EER25.5 to EER42/42/20)ETD Cores (ETD19 to ETD49)PQ Cores (PQ20/16 to PQ50/50)LP Cores (LP23/8 to LP32/13)RM Cores (RM4 to RM14)EPC Cores (EPC13 to EPC30)
• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI12.5 Cores(JIS FEI 12.5)
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1 eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.4821.314.430811.610.817.31.91.612.4±0.32.35.1±0.14.85±0.154.85±0.151.5±0.1Dimensions in mm7.4±0.11.612.4±0.32.4±0.18.8–0Part No.PC40EI12.5-Z
∗ Coil: ø0.2 2UEW 100Ts
AL-value (nH/N2)
1200±25% (1kHz, 0.5mA)∗2120 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.12 max.
Calculated output power(forward converter mode)8.8W (100kHz)
NI limit vs. AL-value for
PC40EI12.5 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40EI12.5 core (Typical)
Temperature rise vs. Total loss forEI12.5 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)10240%20%102Center leg gapSpacer gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)50101110102AL-value(nH/N2)1010.1Air gap length(mm)1000.20.40.60.8Total loss Pm(W)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.2 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI16 Cores(JIS FEI 16)
2.05ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.7534.619.868519.217.540.33.316.0±0.312.2±0.24.8±0.22.052.010.2±0.24.8±0.22.0±0.2Dimensions in mm16.0±0.34.0±0.211.6–0Part No.PC40EI16-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
1100±25% (1kHz, 0.5mA)∗1750 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.31 max.
Calculated output power(forward converter mode)29W (100kHz)
NI limit vs. AL-value for
PC40EI16 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI16 core (Typical)
103Temperature rise vs. Total loss forEI16 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)40%10220%Center leg gap102Spacer gap50101102AL-value(nH/N2)0.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI19 Cores
2.75ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.6539.624.095022.821.155.55.14.55±0.1520.0±0.313.55±0.255.0±0.22.752.311.15±0.155.0±0.22.3±0.1Dimensions in mm20.0±0.314.3–0Part No.PC40EI19-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
1400±25% (1kHz, 0.5mA)∗1830 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.42 max.
Calculated output power(forward converter mode)40W (100kHz)
NI limit vs. AL-value for
PC40EI19 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI19 core (Typical)
103Temperature rise vs. Total loss forEI19 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)Center leg gap102Spacer gap5040%10220%102AL-value(nH/N2)1030.11Air gap length(mm)000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions • Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI22 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.93639.342.0165033.130.338.29.84.55.75±0.2522.0±0.34.010.55±0.2514.55±0.255.75±0.255.75±0.254.5±0.2Dimensions in mm4.522.0±0.313.0–0Part No.PC40EI22-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
2400±25% (1kHz, 0.5mA)∗3360 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.60 max.
Calculated output power(forward converter mode)33W (100kHz)
NI limit vs. AL-value for
PC40EI22 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI22 core (Typical)
103Temperature rise vs. Total loss forEI22 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)1AL-value(nH/N2)NI limit(AT)Center leg gap40%10220%50102Spacer gap102AL-value(nH/N2)1030.10Air gap length(mm)00.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI22/19/6 Cores(JIS FEI 22)
3.0ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.1341.837.0155033.130.354.88.55.75±0.2522.0±0.414.7±0.25.75±0.253.04.010.7±0.25.75±0.254.0±0.2Dimensions in mm22.0±0.415.75–0Part No.PC40EI22/19/6-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
2000±25% (1kHz, 0.5mA)∗2780 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.64 max.
Calculated output power(forward converter mode)48W (100kHz)
NI limit vs. AL-value for
PC40EI22/19/6 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI22/19/6 core (Typical)
103Temperature rise vs. Total loss forEI22/19/6 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)40%10220%Center leg gap102Spacer gap50102AL-value(nH/N2)1030.11Air gap length(mm)000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI25 Cores
3.0ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.1547.041.0193043.940.377.29.825.3±0.515.55±0.256.75±0.253.03.212.35±0.256.75±0.252.7±0.2Dimensions in mm25.3±0.56.5±0.319.0–0Part No.PC40EI25-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2140±25% (1kHz, 0.5mA)∗2950 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.79 max.
Calculated output power(forward converter mode)68W (100kHz)
NI limit vs. AL-value for
PC40EI25 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI25 core (Typical)
103Temperature rise vs. Total loss forEI25 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)Center leg gap40%10220%50102Spacer gap102AL-value(nH/N2)1030.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI28 Cores(JIS FEI 28)
Parameter4.54.512.25±0.2516.75±0.25Core factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)10.6±0.24.5C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.56048.286.0415076.371.869.82210.7±0.33.5±0.3Dimensions in mm28.0±0.57.2±0.318.4–0+0.728.0– 0 .5Part No.PC40EI28-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4300±25% (1kHz, 0.5mA)∗6060 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.65 max.
Calculated output power(forward converter mode)107W (100kHz)
NI limit vs. AL-value for
PC40EI28 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI28 core (Typical)
Temperature rise vs. Total loss forEI28 core (Typical)
(Ambient temperature: 25°C)100103AL-value(nH/N2)NI limit(AT)Center leg gapTemperature rise of hot spot ∆T(˚C)40%10220%50Spacer gap102102AL-value(nH/N2)1030.11Air gap length(mm)000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI30 Cores(JIS FEI 30)
Parameter5.05.016.25±0.2521.25±0.2510.7±0.310.7±0.35.5±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)5.0C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.52358.0111644011410875.63430.0±0.410.7±0.319.7–0+0.730.0– 0 .4Part No.PC40EI30-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4690±25% (1kHz, 0.5mA)∗6490 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT3.1 max.
Calculated output power(forward converter mode)155W (100kHz)
NI limit vs. AL-value for
PC40EI30 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI30 core (Typical)
103Center leg gapAL-value(nH/N2)Temperature rise vs. Total loss forEI30 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)NI limit(AT)40%20%102Spacer gap50102102AL-value(nH/N2)1030.1Air gap length(mm)100123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI33/29/13 Cores
4.45ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.56767.51198030123117138.64123.75±0.2512.7±0.34.454.519.25±0.2512.7±0.35.0±0.3Dimensions in mm33.0±0.59.7±0.323.4–0+0.833.0– 0 .5Part No.
PC40EI33/29/13-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4400±25% (1kHz, 0.5mA)∗5980 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT3.5 max.
Calculated output power(forward converter mode)206W (100kHz)
NI limit vs. AL-value for
PC40EI33/29/13 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI33/29/13 core (Typical)
Temperature rise vs. Total loss forEI33/29/13 core (Typical)(Ambient temperature: 25°C)100103AL-value(nH/N2)NI limit(AT)Center leg gap40%10220%Temperature rise of hot spot ∆T(˚C)50Spacer gap102102AL-value(nH/N2)1030.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI35 Cores(JIS FEI 35)
Parameter5.06.118.25±0.1524.35±0.1510.0±0.310.0±0.34.6±0.3Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)5.0C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.66467.1101678010094.1131.63610.0±0.335.0±0.535.0±0.524.5–0Part No.PC40EI35-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
3800±25% (1kHz, 0.5mA)∗5110 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT2.85 max.
Calculated output power(forward converter mode)218W (100kHz)
NI limit vs. AL-value for
PC40EI35 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI35 core (Typical)
Temperature rise vs. Total loss forEI35 core (Typical)
(Ambient temperature: 25°C)100103AL-value(nH/N2)NI limit(AT)Center leg gap40%10220%Temperature rise of hot spot ∆T(˚C)50Spacer gap102102AL-value(nH/N2)1030.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI40 Cores(JIS FEI 40)
Parameter6.27.020.25±0.2527.25±0.2511.65±0.3511.65±0.357.5±0.3Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)6.2C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.52077.014811400136128160.56011.65±0.3540.0±0.540.0±0.527.2–0Part No.PC40EI40-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4860±25% (1kHz, 0.5mA)∗6520 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT4.8 max.
Calculated output power(forward converter mode)348W (100kHz)
NI limit vs. AL-value for
PC40EI40 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI40 core (Typical)
Temperature rise vs. Total loss forEI40 core (Typical)
(Ambient temperature: 25°C)100103AL-value(nH/N2)Center leg gap40%20%102Temperature rise of hot spot ∆T(˚C)NI limit(AT)50Spacer gap102102AL-value(nH/N2)1030.11Air gap length(mm)00246Total loss Pm(W)810Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI50 Cores(JIS FEI 50)
Parameter7.78.524.75±0.2533.35±0.3514.6±0.414.6±0.49.0±0.3Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)7.7C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.40994.023021620213202246.311514.6±0.450.0±0.733.5–0+1.250.0– 0 .7Part No.PC40EI50-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
6110±25% (1kHz, 0.5mA)∗8300 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT9.2 max.
Calculated output power(forward converter mode)508W (100kHz)
NI limit vs. AL-value for
PC40EI50 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI50 core (Typical)
Temperature rise vs. Total loss forEI50 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)40%20%102103Center leg gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)50Spacer gap102103AL-value(nH/N2)1020.11Air gap length(mm)00246Total loss Pm(W)810Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EI Series EI60 Cores(JIS FEI 60)
7.7ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.44110924726900243231402.413915.6±0.427.85±0.3535.85±0.3515.6±0.47.78.015.6±0.48.5±0.3Dimensions in mm60.0±0.843.6–0+1.460.0– 0 .8Part No.PC40EI60-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
5670±25% (1kHz, 0.5mA)∗7690 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT12.5 max.
Calculated output power(forward converter mode)618W (100kHz)
NI limit vs. AL-value for
PC40EI60 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EI60 core (Typical)
Temperature rise vs. Total loss forEI60 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)40%20%102103Center leg gap50Spacer gap102102103AL-value(nH/N2)0.11Air gap length(mm)00246Total loss Pm(W)810Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EE Series EE10/11 Cores(JIS FEE 10.2)
Parameter1.15.5±0.14.2±0.151.34.75±0.15Dimensions in mm11.0±0.21.1Core factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g2.1626.112.131511.610.623.31.52.45±0.1510.2±0.27.7–0Part No.PC40EE10/11-Z
∗ Coil: ø0.18 2UEW 100Ts
AL-value (nH/N2)
850±25% (1kHz, 0.5mA)∗1450 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.14 max.
Calculated output power(forward converter mode)9.4W (100kHz)
NI limit vs. AL-value for
PC40EE10/11 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EE10/11 core (Typical)
Temperature rise vs. Total loss forEE10/11 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)102Temperature rise of hot spot ∆T(˚C)1AL-value(nH/N2)40%10220%50Center leg gap101102AL-value(nH/N2)1010.1Air gap length(mm)000.5Total loss Pm(W)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.18 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EE Series EE13 Cores
1.4ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.7730.217.151716.915.634.32.72.75±0.156.0±0.154.6±0.11.46.15±0.1512.0±0.3Dimensions in mm1.413.0±0.210.0–0Part No.PC40EE13-Z
∗ Coil: ø0.18 2UEW 100Ts
AL-value (nH/N2)
1130±25% (1kHz, 0.5mA)∗1770 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.235 max.
Calculated output power(forward converter mode)17W (100kHz)
NI limit vs. AL-value for
PC40EE13 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40EE13 core (Typical)
Temperature rise vs. Total loss forEE13 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)102Center leg gapTemperature rise of hot spot ∆T(˚C)1AL-value(nH/N2)40%10220%50101102AL-value(nH/N2)1010.1Air gap length(mm)000.5Total loss Pm(W)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.18 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EE Series SEE16 Cores
1.6ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.6936.621.779521.619.852.94.13.18±0.187.15±0.155.5±0.114.3±0.31.66.8±0.2Dimensions in mm1.616.0±0.312.5–0Part No.PC40SEE16-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
1240±25% (1kHz, 0.5mA)∗1850 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.37 max.
Calculated output power(forward converter mode)32W (100kHz)
NI limit vs. AL-value for
PC40SEE16 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40SEE16 core (Typical)
Temperature rise vs. Total loss forSEE16 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)102Center leg gapTemperature rise of hot spot ∆T(˚C)1AL-value(nH/N2)40%10220%50101102AL-value(nH/N2)1010.1Air gap length(mm)000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EE Series EE20/20/5 Cores(DIN 41295)
Based on DIN 41295.ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.3843.031.0134025.523.541.37.53.5310.0±0.26.5±0.23.55.1±0.2Dimensions in mm20.0±0.43.5320.15±0.555.0±0.212.8–0Part No.
PC40EE20/20/5-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
1400±25% (1kHz, 0.5mA)∗2270 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.51 max.
Calculated output power(forward converter mode)41W (100kHz)
NI limit vs. AL-value for
PC40EE20/20/5 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40EE20/20/5 core (Typical)
Temperature rise vs. Total loss forEE20/20/5 core (Typical)(Ambient temperature: 25°C)100103AL-value(nH/N2)NI limit(AT)103Temperature rise of hot spot ∆T(˚C)40%20%10250102Center leg gap102103AL-value(nH/N2)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
000.511.5Total loss Pm(W)22.5Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EE Series EE25/19 Cores
Based on standard U. S. lamination size.Parameter3.11Core factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)6.35±0.259.46±0.196.41±0.1918.92±0.386.29±0.19Dimensions in mm3.113.0525.4±0.518.55–0C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.2248.740.0195039.937.279.09.1Part No.PC40EE25/19-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
2000±25% (1kHz, 0.5mA)∗2570 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.86 max.
Calculated output power(forward converter mode)70W (100kHz)
NI limit vs. AL-value for
PC40EE25/19 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EE25/19 core (Typical)
Temperature rise vs. Total loss forEE25/19 core (Typical)
(Ambient temperature: 25°C)100103Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)5040%10220%Center leg gap102102103AL-value(nH/N2)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
000.511.5Total loss Pm(W)22.5Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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EE Series EE30/30/7 Cores(DIN 41295)
Based on DIN 41295ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.1266.959.7400049.045.6129225.16.95±0.2515.0±0.29.95±0.2530.0±0.45.057.05±0.25Dimensions in mm5.130.1±0.719.5–0Part No.
PC40EE30/30/7-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2100±25% (1kHz, 0.5mA)∗3030 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.51 max.
Calculated output power(forward converter mode)133W (100kHz)
NI limit vs. AL-value for
PC40EE30/30/7 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EE30/30/7 core (Typical)
Temperature rise vs. Total loss forEE30/30/7 core (Typical)(Ambient temperature: 25°C)100103AL-value(nH/N2)Temperature rise of hot spot ∆T(˚C)NI limit(AT)40%20%10250Center leg gap102102103AL-value(nH/N2)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
000.511.5Total loss Pm(W)22.5Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EE Series EE42/42/15 Cores(DIN 41295)
C0.56.025Based on DIN 41295ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.53397.0182176001791722758011.95±0.2521.0±0.215.15±0.3542.0±0.45.8514.95±0.25Dimensions in mm6.02542.15±0.8529.5–0Part No.
PC40EE42/42/15-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4700±25% (1kHz, 0.5mA)∗7050 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT8.0 max.
Calculated output power(forward converter mode)419W (100kHz)
NI limit vs. AL-value for
PC40EE42/42/15 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EE42/42/15 core (Typical)
Temperature rise vs. Total loss forEE42/42/15 core (Typical)(Ambient temperature: 25°C)100103AL-value(nH/N2)Center leg gapTemperature rise of hot spot ∆T(˚C)NI limit(AT)40%20%10250102102103AL-value(nH/N2)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
00246Total loss Pm(W)810Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EE Series EE55/55/21 Cores(DIN 41295)
Based on DIN 41295ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.348123354437003513413972348.5316.95±0.2555.0±0.6Dimensions in mm8.5327.5±0.318.8±0.38.720.7±0.355.15±1.0537.5–0Part No.
PC40EE55/55/21-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
7100±25% (1kHz, 0.5mA)∗10830 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT11.0 max.
Calculated output power(forward converter mode)814W (100kHz)
NI limit vs. AL-value for
PC40EE55/55/21 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40EE55/55/21 core (Typical)
Temperature rise vs. Total loss forEE55/55/21 core (Typical)(Ambient temperature: 25°C)100Center leg gap103AL-value(nH/N2)NI limit(AT)103Temperature rise of hot spot ∆T(˚C)40%20%10250102102103AL-value(nH/N2)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
00246Total loss Pm(W)810Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EE Series EE50.3/51/6 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.86810512112700121115163.36810.019.9±0.3525.6±0.2515.9±0.2551.2±0.59.76.1–0.2+0.4Dimensions in mm10.050.3±0.829.5min.Part No.
PC40EE50.3/51/6-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
2900±25% (1kHz, 0.5mA)∗3950 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT5.83 max.
Calculated output power(forward converter mode)213W (100kHz)
NI limit vs. AL-value for
PC40EE50.3/51/6 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40EE50.3/51/6 core (Typical)
Temperature rise vs. Total loss forEE50.3/51/6 core (Typical)(Ambient temperature: 25°C)Temperature rise of hot spot ∆T(˚C)1100103AL-value(nH/N2)NI limit(AT)40%20%103Center leg gap5010210220102AL-value(nH/N2)0.10Air gap length(mm)0123Total loss Pm(W)4Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EE Series EE62.3/62/6 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center leg areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.82212615319300154146.320210212.625.3±0.531.0±0.2512.318.7±0.2562.0±0.56.1–0.2+0.4Dimensions in mm12.662.3±1.235.9min.Part No.
PC40EE62.3/62/6-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
3100±25% (1kHz, 0.5mA)∗4150 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT8.85 max.
Calculated output power(forward converter mode)250W (100kHz)
NI limit vs. AL-value for
PC40EE62.3/62/6 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40EE62.3/62/6 core (Typical)
Temperature rise vs. Total loss forEE62.3/62/6 core (Typical)(Ambient temperature: 25°C)Temperature rise of hot spot ∆T(˚C)1100103AL-value(nH/N2)NI limit(AT)40%20%103Center leg gap5010210220102AL-value(nH/N2)0.10Air gap length(mm)01234Total loss Pm(W)5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EER Series EER25.5 Cores(JIS FEER 25.5A)
2.6ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.0848.244.8216044.242.479.411ø7.5±0.1525.5±0.56.2±0.29.3±0.2Dimensions in mm2.67.5±0.219.8–0Part No.PC40EER25.5-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
1920±25% (1kHz, 0.5mA)∗2910 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.98 max.
Calculated output power(forward converter mode)87W (100kHz)
NI limit vs. AL-value for
PC40EER25.5 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EER25.5 core (Typical)
103Temperature rise vs. Total loss forEER25.5 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)Center pole gapNI limit(AT)1025040%10220%102103AL-value(nH/N2)1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EER Series EER28 Cores(JIS FEER 28.5A)
3.4ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.7864.082.1525077.073.11142828.55±0.55ø9.9±0.259.65±0.2514.0±0.2Dimensions in mm3.411.4±0.2521.2–0Part No.PC40EER28-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2870±25% (1kHz, 0.5mA)∗4350 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT2.3 max.
Calculated output power(forward converter mode)203W (100kHz)
NI limit vs. AL-value for
PC40EER28 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EER28 core (Typical)
104Temperature rise vs. Total loss forEER28 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)103Center pole gap5040%10220%102103AL-value(nH/N2)1020.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EER Series EER28L Cores(JIS FEER 28.5B)
3.4ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.92875.581.4615077.073.11483328.55±0.55ø9.9±0.2516.9±0.25Dimensions in mm3.412.53±0.2811.4±0.2521.2–0Part No.PC40EER28L-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2520±25% (1kHz, 0.5mA)∗3660 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT2.7 max.
Calculated output power(forward converter mode)228W (100kHz)
NI limit vs. AL-value for
PC40EER28L gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EER28L core (Typical)
104Temperature rise vs. Total loss forEER28L core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)103Center pole gap5040%10220%102103AL-value(nH/N2)1020.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EER Series EER35 Cores(JIS FEER 35A)
4.43ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.84990.8107972010097.621852ø11.3±0.1535.0±0.520.7±0.2Dimensions in mm4.4314.7±0.311.3±0.225.6–0Part No.PC40EER35-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2770±25% (1kHz, 0.5mA)∗4000 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT4.2 max.
Calculated output power(forward converter mode)325W (100kHz)
NI limit vs. AL-value for
PC40EER35 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EER35 core (Typical)
104Temperature rise vs. Total loss forEER35 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)40%20%102103Center pole gap50102103AL-value(nH/N2)1020.1Air gap length(mm)100123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EER Series EER40 Cores
5.28ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.65898.01491460013913424978ø13.3±0.2540.0±0.522.4±0.213.3±0.25Dimensions in mm5.2815.4±0.329.0–0Part No.PC40EER40-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
3620±25% (1kHz, 0.5mA)∗5160 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT6.3 max.
Calculated output power(forward converter mode)421W (100kHz)
NI limit vs. AL-value for
PC40EER40 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EER40 core (Typical)
104Temperature rise vs. Total loss forEER40 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)20%40%AL-value(nH/N2)NI limit(AT)103Center pole gap50102102103AL-value(nH/N2)1020.1Air gap length(mm)100123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EER Series EER42 Cores(JIS FEER 42)
Parameter6.015.4±0.322.4±0.215.5±0.25Dimensions in mm6.0Core factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.50998.819419200187183223102ø15.5±0.2542.0±0.629.4–0Part No.PC40EER42-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4690±25% (1kHz, 0.5mA)∗6670 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT8.6 max.
Calculated output power(forward converter mode)433W (100kHz)
NI limit vs. AL-value for
PC40EER42 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC40EER42 core (Typical)
104Temperature rise vs. Total loss forEER42 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)40%20%102AL-value(nH/N2)NI limit(AT)103Center pole gap50102103AL-value(nH/N2)1020.1Air gap length(mm)100123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EER Series EER42/42/20 Cores
4.93ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.41198.624023700235228229116ø17.3±0.2542.15±0.6515.25±0.2521.2±0.2Dimensions in mm4.9319.6±0.431.8–0Part No.
PC40EER42/42/20-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
5340±25% (1kHz, 0.5mA)∗8260 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT10.7 max.
Calculated output power(forward converter mode)509W (100kHz)
NI limit vs. AL-value forAL-value vs. Air gap length forPC40EER42/42/20 gapped core (Typical)PC40EER42/42/20 core (Typical)
Temperature: 100˚C103AL-value(nH/N2)104Temperature rise vs. Total loss forEER42/42/20core (Typical)(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)NI limit(AT)103Center pole gap5010240%20%102103AL-value(nH/N2)1020.1Air gap length(mm)100123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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ETD Series ETD19 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.3254.641.322604340.770.513.3ø7.4±0.213.65±0.159.4±0.24.257.4±0.227.3±0.314.9±0.5Dimensions in mm19.6±0.5Part No.PC40ETD19-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
1720±25% (1kHz, 0.5mA)∗2380 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.1 max.
Calculated output power(forward converter mode)79W (100kHz)
NI limit vs. AL-value for
PC40ETD19 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40ETD19 core (Typical)
Temperature rise vs. Total loss forETD19 core (Typical)
(Ambient temperature: 25°C)100103102NI limit(AT)20%AL-value(nH/N2)40%Temperature rise of hot spot ∆T(˚C)Center pole gap5010102102AL-value(nH/N2)1030.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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ETD Series ETD24 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.1061.956.3348056.754.110219.5ø8.5±0.214.45±0.1510.1±0.24.358.5±0.428.9±0.318.6±0.6Dimensions in mm24.4±0.6Part No.PC40ETD24-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2125±25% (1kHz, 0.5mA)∗2860 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.6 max.
Calculated output power(forward converter mode)115W (100kHz)
NI limit vs. AL-value for
PC40ETD24 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40ETD24 core (Typical)
Temperature rise vs. Total loss forETD24 core (Typical)
(Ambient temperature: 25°C)100103102NI limit(AT)AL-value(nH/N2)40%20%Center pole gapTemperature rise of hot spot ∆T(˚C)5010102102AL-value(nH/N2)1030.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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ETD Series ETD29 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.95970.673.6520070.966.5145.228ø9.5±0.322.7±0.715.8±0.1511.0±0.34.89.5±0.331.6±0.3Dimensions in mm29.8±0.8Part No.PC40ETD29-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2500±25% (1kHz, 0.5mA)∗3540 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT2.4 max.
Calculated output power(forward converter mode)170W (100kHz)
NI limit vs. AL-value for
PC40ETD29 gapped core (Typical)
Temperature: 100˚CAL-value vs. Air gap length forPC40ETD29 core (Typical)
Temperature rise vs. Total loss forETD29 core (Typical)
(Ambient temperature: 25°C)100103102NI limit(AT)AL-value(nH/N2)40%20%Center pole gapTemperature rise of hot spot ∆T(˚C)5010102102AL-value(nH/N2)1030.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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ETD Series ETD34 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.81078.697.1763091.686.618840ø10.8±0.326.3±0.717.3±0.212.1±0.35.210.88±0.3834.6±0.4Dimensions in mm34.2±0.8Part No.PC40ETD34-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2780±25% (1kHz, 0.5mA)∗4190 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT3.31 max.
Calculated output power(forward converter mode)271W (100kHz)
NI limit vs. AL-value for
PC40ETD34 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40ETD34 core (Typical)
Temperature rise vs. Total loss forETD34 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)40%20%102103Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)50Center pole gap102103AL-value(nH/N2)1020.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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ETD Series ETD39 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.73792.11251150012311725760ø12.5±0.330.1±0.819.8±0.214.6±0.45.212.58±0.3839.6±0.4Dimensions in mm39.1±0.9Part No.PC40ETD39-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
3150±25% (1kHz, 0.5mA)∗4600 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT5.3 max.
Calculated output power(forward converter mode)382W (100kHz)
NI limit vs. AL-value for
PC40ETD39 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40ETD39 core (Typical)
Temperature rise vs. Total loss forETD39 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)40%20%102103Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)50Center pole gap102103AL-value(nH/N2)1020.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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ETD Series ETD44 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.5891031751800017216330594ø14.8±0.433.3±0.822.3±0.216.5±0.45.814.9±0.544.6±0.4Dimensions in mm44.0±1.0Part No.PC40ETD44-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4000±25% (1kHz, 0.5mA)∗5760 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT8.3 max.
Calculated output power(forward converter mode)523W (100kHz)
NI limit vs. AL-value for
PC40ETD44 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40ETD44 core (Typical)
Temperature rise vs. Total loss forETD44 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)40%20%102103Center pole gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)50102103AL-value(nH/N2)1020.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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ETD Series ETD49 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.53511421324300209199375124ø16.3±0.437.0±0.924.7±0.218.1±0.46.616.4±0.549.4±0.4Dimensions in mm48.7±1.1Part No.PC40ETD49-Z
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
4440±25% (1kHz, 0.5mA)∗6340 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT11.2 max.
Calculated output power(forward converter mode)682W (100kHz)
NI limit vs. AL-value for
PC40ETD49 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40ETD49 core (Typical)
Temperature rise vs. Total loss forETD49 core (Typical)
(Ambient temperature: 25°C)
100NI limit(AT)40%20%102103Center pole gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)50102103AL-value(nH/N2)1020.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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PQ Series PQ20/16 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.60537.462231060.858.147.413ø8.8±0.210.3±0.316.2±0.218.0±0.414.0±0.4Dimensions in mm20.5±0.412.0–0Part No.
PC44PQ20/16Z-12
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
3880±25% (1kHz, 0.5mA)∗5210 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.84 max.
Calculated output power(forward converter mode)70W (100kHz)
NI limit vs. AL-value for
PC44PQ20/16 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ20/16 core (Typical)
103Temperature rise vs. Total loss forPQ20/16 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)20%102AL-value(nH/N2)40%NI limit(AT)Center pole gapSpacer gap10250101NI limit=28821×AL–1.022(20%)NI limit=38270×AL–1.038(40%)AL=22862×NI limit–0.978(20%)AL=26409×NI limit–0.964(40%)102AL-value(nH/N2)1031010.11Air gap length(mm)1000123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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PQ Series PQ20/20 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.73845.462279060.858.165.815ø8.8±0.214.3±0.320.2±0.218.0±0.414.0±0.4Dimensions in mm20.5±0.412.0–0Part No.
PC44PQ20/20Z-12PC50PQ20/20Z-12∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
3150±25% (1kHz, 0.5mA)∗4290 min. (100kHz, 200mT)2000±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT1.02 max.
0.33 max.Calculated output power
(forward converter mode)92W (100kHz)187W (500kHz)NI limit vs. AL-value for
PC44PQ20/20 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ20/20 core (Typical)
103Temperature rise vs. Total loss forPQ20/20 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)10AL-value(nH/N2)40%NI limit(AT)10220%Center pole gapSpacer gap10250101NI limit=27144×AL–1.017(20%)NI limit=33834×AL–1.018(40%)AL=22840×NI limit–0.983(20%)AL=28428×NI limit–0.983(40%)102AL-value(nH/N2)1031010.11Air gap length(mm)00123Total loss Pm(W)45NI limit vs. AL-value for
PC50PQ20/20 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC50PQ20/20 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCore40%10220%AL-value(nH/N2)Center pole gap102NI limit(AT)Coil101102AL-value(nH/N2)1031010.11Air gap length(mm)10Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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PQ Series PQ26/20 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.39146.3119549011310960.431ø12.0±0.211.5±0.320.15±0.2522.5±0.4519.0±0.45Dimensions in mm26.5±0.4515.5–0Part No.
PC44PQ26/20Z-12
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
6170±25% (1kHz, 0.5mA)∗8060 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.94 max.
Calculated output power(forward converter mode)170W (100kHz)
NI limit vs. AL-value for
PC44PQ26/20 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ26/20 core (Typical)
103Temperature rise vs. Total loss forPQ26/20 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)Center pole gapAL-value(nH/N2)40%NI limit(AT)20%102Spacer gap10250101NI limit=63599×AL–1.053(20%)NI limit=80460×AL–1.050(40%)AL=36698×NI limit–0.950(20%)AL=47452×NI limit–0.953(40%)102AL-value(nH/N2)1031010.11Air gap length(mm)1000123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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PQ Series PQ26/25 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.47255.5118653011310984.536ø12.0±0.216.1±0.324.75±0.2522.5±0.4519.0±0.45Dimensions in mm26.5±0.4515.5–0Part No.
PC44PQ26/25Z-12PC50PQ26/25Z-12∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
5250±25% (1kHz, 0.5mA)∗6680 min. (100kHz, 200mT)3200±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT2.32 max.
0.76 max.Calculated output power
(forward converter mode)195W (100kHz)366W (500kHz)NI limit vs. AL-value for
PC44PQ26/25 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ26/25 core (Typical)
103Temperature rise vs. Total loss forPQ26/25 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)10Center pole gapAL-value(nH/N2)40%NI limit(AT)20%102Spacer gap10250101NI limit=76619×AL–1.087(20%)NI limit=93743×AL–1.086(40%)AL=31132×NI limit–0.920(20%)AL=38138×NI limit–0.921(40%)102AL-value(nH/N2)1031010.11Air gap length(mm)00123Total loss Pm(W)45NI limit vs. AL-value for
PC50PQ26/25 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC50PQ26/25 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCenter pole gapAL-value(nH/N2)CoreNI limit(AT)40%10220%102Coil101102AL-value(nH/N2)1031010.11Air gap length(mm)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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PQ Series PQ32/20 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.32655.5170942014213780.842ø13.45±0.2527.5±0.511.5±0.320.55±0.2522.0±0.5Dimensions in mm32.0±0.519.0–0Part No.
PC44PQ32/20Z-12
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
7310±25% (1kHz, 0.5mA)∗9640 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT2.92 max.
Calculated output power(forward converter mode)232W (100kHz)
NI limit vs. AL-value for
PC44PQ32/20 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ32/20 core (Typical)
Temperature rise vs. Total loss forPQ32/20 core (Typical)
(Ambient temperature: 25°C)100103AL-value(nH/N2)40%NI limit(AT)20%102Center pole gapSpacer gapTemperature rise of hot spot ∆T(˚C)1050102101NI limit=63825×AL–0.998(20%)NI limit=82828×AL–0.999(40%)AL=65288×NI limit–1.002(20%)AL=81560×NI limit–1.001(40%)102AL-value(nH/N2)1030.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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PQ Series PQ32/30 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.46474.616112000142137149.655ø13.45±0.2527.5±0.521.3±0.330.35±0.2522.0±0.5Dimensions in mm32.0±0.519.0–0Part No.
PC44PQ32/30Z-12
∗ Coil: ø0.4 2UEW 100Ts
AL-value (nH/N2)
5140±25% (1kHz, 0.5mA)∗6790 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT3.92 max.
Calculated output power(forward converter mode)331W (100kHz)
NI limit vs. AL-value for
PC44PQ32/30 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ32/30 core (Typical)
Temperature rise vs. Total loss forPQ32/30 core (Typical)
(Ambient temperature: 25°C)10010320%102AL-value(nH/N2)40%NI limit(AT)Center pole gapSpacer gapTemperature rise of hot spot ∆T(˚C)50102101NI limit=121567×AL–1.110(20%)NI limit=135490×AL–1.086(40%)AL=38232×NI limit–0.901(20%)AL=52632×NI limit–0.921(40%)1021032()AL-valuenH/N0.11Air gap length(mm)1000123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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PQ Series PQ35/35 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.44887.919617300162156220.673ø14.35±0.2532.0±0.525.0±0.334.75±0.2526.0±0.5Dimensions in mm35.1±0.623.5–0Part No.
PC44PQ35/35Z-12
∗ Coil: ø0.4 2UEW 100Ts
AL-value (nH/N2)
4860±25% (1kHz, 0.5mA)∗7010 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT5.27 max.
Calculated output power(forward converter mode)452W (100kHz)
NI limit vs. AL-value for
PC44PQ35/35 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ35/35 core (Typical)
Temperature rise vs. Total loss forPQ35/35 core (Typical)
(Ambient temperature: 25°C)10010320%102AL-value(nH/N2)40%NI limit(AT)Center pole gapSpacer gapTemperature rise of hot spot ∆T(˚C)1050102101NI limit=124531×AL–1.107(20%)NI limit=154965×AL–1.103(40%)AL=39836×NI limit–0.903(20%)AL=50738×NI limit–0.906(40%)102AL-value(nH/N2)1030.11Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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PQ Series PQ40/40 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.5081022012050017416732695ø14.9±0.337.0±0.629.5±0.339.75±0.2528.0±0.6Dimensions in mm40.5±0.928.0–0Part No.
PC44PQ40/40Z-12
∗ Coil: ø0.4 2UEW 100Ts
AL-value (nH/N2)
4300±25% (1kHz, 0.5mA)∗6200 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT6.56 max.
Calculated output power(forward converter mode)596W (100kHz)
NI limit vs. AL-value for
PC44PQ40/40 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC44PQ40/40 core (Typical)Temperature rise vs. Total loss forPQ40/40 core (Typical)
10010340%AL-value(nH/N2)NI limit(AT)20%102Spacer gapCenter pole gapTemperature rise of hot spot ∆T(˚C)1050102101NI limit=134431×AL–1.106(20%)NI limit=161112×AL–1.095(40%)AL=43295×NI limit–0.904(20%)AL=57069×NI limit–0.914(40%)1021032()AL-valuenH/N0.11Air gap length(mm)005Total loss Pm(W)10Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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PQ Series PQ50/50 Cores
ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.34611332837200314303433195ø20.0±0.3544.0±0.736.1±0.349.95±0.2532.0±0.6Dimensions in mm50.0±0.731.5–0Part No.
PC44PQ50/50Z-12
∗ Coil: ø0.4 2UEW 100Ts
AL-value (nH/N2)
6720±25% (1kHz, 0.5mA)∗9810 min. (100kHz, 150mT)
Core loss (W) at 100°C100kHz, 150mT6.1 max.
Calculated output power(forward converter mode)1045W (100kHz)
NI limit vs. AL-value for
PC44PQ50/50 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44PQ50/50 core (Typical)
Temperature rise vs. Total loss forPQ50/50 core (Typical)
(Ambient temperature: 25°C)100103Center pole gapSpacer gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)40%10220%501021021032AL-value(nH/N)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
005Total loss Pm(W)10Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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LP Series LP23/8 Cores
9.0±0.58.7±0.2ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.4144.131.3138025.524.659.29.6ø5.7±0.112.5±0.316.5±0.317.4±0.223.4±0.2Dimensions in mmPart No.PC44LP23/8Z-12
∗ Coil: ø0.3 2UEW 100Ts
AL-value (nH/N2)
1600±25% (1kHz, 0.5mA)∗2230 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.42 max.
Calculated output power(forward converter mode)50W (100kHz)
NI limit vs. AL-value for
PC44LP23/8 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44LP23/8 core (Typical)
Temperature rise vs. Total loss forLP23/8 core (Typical)
(Ambient temperature: 25°C)100103Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)50Center pole gap10220%40%102102103AL-value(nH/N2)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.3 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
001Total loss Pm(W)Measuring point2CoreCoilNote: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
• All specifications are subject to change without notice.
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LP Series LP22/13 Cores
13.5±0.5ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.72149.067.9333058.155.484.221ø8.6±0.219.0±0.325.0±0.416.4±0.322.4±0.2Dimensions in mm12.9±0.3Part No.
PC44LP22/13Z-12
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
3310±25% (1kHz, 0.5mA)∗4700 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.05 max.
Calculated output power(forward converter mode)121W (100kHz)
NI limit vs. AL-value for
PC44LP22/13 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44LP22/13 core (Typical)
Temperature rise vs. Total loss forLP22/13 core (Typical)
(Ambient temperature: 25°C)100103Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)40%10220%Center pole gap50102102103AL-value(nH/N2)Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
00123Total loss Pm(W)45CoreCoilMeasuring pointNote: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
• All specifications are subject to change without notice.
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LP Series LP32/13 Cores
Parameter13.5±0.5ø8.6±0.219.0±0.325.0±0.424.1±0.331.8±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.90964.070.3450058.155.4125.33012.9±0.3Part No.
PC44LP32/13Z-12
∗ Coil: ø0.35 2UEW 100Ts
AL-value (nH/N2)
2630±25% (1kHz, 0.5mA)∗3730 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.38 max.
Calculated output power(forward converter mode)164W (100kHz)
NI limit vs. AL-value for
PC44LP32/13 gapped core (Typical)AL-value vs. Air gap length forPC44LP32/13core (Typical)
Temperature rise vs. Total loss forLP32/13 core (Typical)
(Ambient temperature: 25°C)
100103AL-value(nH/N2)NI limit(AT)103Temperature rise of hot spot ∆T(˚C)Temperature: 100˚C40%10220%Center pole gap501021021032()AL-valuenH/NNote: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
0.11Air gap length(mm)Measuring conditions• Coil: ø0.35 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
00123Total loss Pm(W)45CoreCoilMeasuring pointNote: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
• All specifications are subject to change without notice.
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RM Series RM4 Cores
Based on JIS C 2516, IEC Publication 60431 and DIN 41980.10.4±0.14.45±0.157.2±0.2ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.6222.714.031811.310.715.61.7ø3.8±0.110.8±0.28.15±0.290˚5.8–0180.Part No.PC40RM4Z-12PC50RM4Z-12∗ Coil: ø0.18 2UEW 100Ts
NI limit vs. AL-value for
PC40RM4 gapped core (Typical)
103Temperature: 100˚CNI limit(AT)102Center pole gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)102NI limit vs. AL-value for
PC50RM4 gapped core (Typical)
103Temperature: 100˚CAL-value(nH/N2)±639.Dimensions in mmAL-value (nH/N2)
680 min. (1kHz, 0.5mA)∗
1650 min. (100kHz, 200mT)960±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.12 max.
0.036 max.Calculated output power
(forward converter mode)6.9W (100kHz)21W (500kHz)AL-value vs. Air gap length forPC40RM4 core (Typical)
Temperature rise vs. Total loss forRM4 core (Typical)
(Ambient temperature: 25°C)10040%20%50101102AL-value(nH/N2)1010.1Air gap length(mm)1000.5Total loss Pm(W)1AL-value vs. Air gap length forPC50RM4 core (Typical)
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCore102NI limit(AT)Center pole gapCoil10240%20%101102(AL-valuenH/N2)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.18 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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RM Series RM5 Cores
Based on JIS C 2516, IEC Publication 60431 and DIN 41980.10.4±0.16.6±0.26.5±0.2ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.94022.423.753018.117.318.23.0ø4.8±0.1Dimensions in mm14.3±0.310.4±0.290˚6.0–0250.Part No.PC40RM5Z-12PC50RM5Z-12∗ Coil: ø0.2 2UEW 100Ts
NI limit vs. AL-value for
PC40RM5 gapped core (Typical)
103Temperature: 100˚CCenter pole gapNI limit(AT)102Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)102NI limit vs. AL-value for
PC50RM5 gapped core (Typical)
103Temperature: 100˚CAL-value(nH/N2)5±.012AL-value (nH/N2)
1250 min. (1kHz, 0.5mA)∗3340 min. (100kHz, 200mT)1340±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.18 max.
0.053 max.Calculated output power
(forward converter mode)16W (100kHz)34W (500kHz)AL-value vs. Air gap length forPC40RM5 core (Typical)
Temperature rise vs. Total loss forRM5 core (Typical)
(Ambient temperature: 25°C)10040%20%50101102AL-value(nH/N2)1010.1Air gap length(mm)1000.5Total loss Pm(W)1AL-value vs. Air gap length forPC50RM5 core (Typical)
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCenter pole gapNI limit(AT)102Coil10240%20%101102(AL-valuenH/N2)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.2 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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RM Series RM6 Cores
Based on JIS C 2516, IEC Publication 60431 and DIN 41980.12.4±0.18.0±0.28.2±0.2ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.78128.636.6105031.230.226.05.512.65±0.25150˚ø6.3±0.1Dimensions in mm17.6±0.38.4–0±.430.Part No.PC40RM6Z-12PC50RM6Z-12∗ Coil: ø0.26 2UEW 100Ts
NI limit vs. AL-value for
PC40RM6 gapped core (Typical)
103Temperature: 100˚CCenter pole gapNI limit(AT)102Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)102NI limit vs. AL-value for
PC50RM6 gapped core (Typical)
103Temperature: 100˚CAL-value(nH/N2)14AL-value (nH/N2)
2450±25% (1kHz, 0.5mA)∗4030 min. (100kHz, 200mT)1700±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.41 max.
0.11 max.Calculated output power
(forward converter mode)27W (100kHz)55W (500kHz)AL-value vs. Air gap length forPC40RM6 core (Typical)
Temperature rise vs. Total loss forRM6 core (Typical)
(Ambient temperature: 25°C)10040%20%50101102AL-value(nH/N2)1010.1Air gap length(mm)1000.5Total loss Pm(W)1AL-value vs. Air gap length forPC50RM6 core (Typical)
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCenter pole gapCoreNI limit(AT)102Coil40%10220%101102(AL-valuenH/N2)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.26 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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RM Series RM8 Cores
Based on JIS C 2516, IEC Publication 60431 and DIN 41980.10.8±0.216.4±0.15.1±0.111.0±0.2ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.59438.064.0243055.453.548.91322.75±0.45ø8.4±0.1517.3±0.3Dimensions in mm90˚9.8–04.0Part No.PC40RM8Z-12
∗ Coil: ø0.4 2UEW 100Ts
NI limit vs. AL-value for
PC40RM8 gapped core (Typical)
103Temperature: 100˚CNI limit(AT)103Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)102Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
• All specifications are subject to change without notice.
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5±.319350.AL-value (nH/N2)
1950 min. (1kHz, 0.5mA)∗5290 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT0.97 max.
Calculated output power(forward converter mode)67W (100kHz)
AL-value vs. Air gap length forPC40RM8 core (Typical)
Temperature rise vs. Total loss forRM8 core (Typical)
(Ambient temperature: 25°C)1005040%20%Center pole gap102103AL-value(nH/N2)1020.1Air gap length(mm)1001Total loss Pm(W)2Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil(55/71)
RM Series RM10 Cores
Based on JIS C 2516, IEC Publication 60431 and DIN 41980.13.25±0.2518.6±0.15.1±0.112.7±0.3ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.45044.098.0431089.986.669.52327.85±0.6521.65±0.45Dimensions in mmø10.7±0.290˚11.3–03Part No.PC40RM10Z-12
∗ Coil: ø0.4 2UEW 100Ts
NI limit vs. AL-value for
PC40RM10 gapped core (Typical)
103Temperature: 100˚CNI limit(AT)103Center pole gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)102Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
• All specifications are subject to change without notice.
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5±.124102550.AL-value (nH/N2)
4850±25% (1kHz, 0.5mA)∗7000 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT1.8 max.
Calculated output power(forward converter mode)130W (100kHz)
AL-value vs. Air gap length forPC40RM10 core (Typical)
Temperature rise vs. Total loss forRM10 core (Typical)
(Ambient temperature: 25°C)1005040%20%Spacer gap103(AL-valuenH/N2)1020.1Air gap length(mm)1001Total loss Pm(W)2Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil(56/71)
RM Series RM12 Cores
Based on JIS C 2516, IEC Publication 60431.16.0±0.35.5±0.1Parameter23.5±0.117.1±0.336.75±0.65ø12.6±0.225.5±0.5Core factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)12.9–08.69C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.40656.914079601251211104290˚5±.229550.20.6±0.2Dimensions in mmPart No.PC40RM12Z-12
∗ Coil: ø0.4 2UEW 100Ts
AL-value (nH/N2)
4150 min. (1kHz, 0.5mA)∗9290 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT3.3 max.
Calculated output power(forward converter mode)344W (100kHz)
NI limit vs. AL-value for
PC40RM12 gapped core (Typical)
103Temperature: 100˚CAL-value vs. Air gap length forPC40RM12 core (Typical)
Temperature rise vs. Total loss forRM12 core (Typical)
(Ambient temperature: 25°C)100NI limit(AT)103Center pole gapTemperature rise of hot spot ∆T(˚C)1AL-value(nH/N2)5010240%20%Spacer gap102103(AL-valuenH/N2)1020.1Air gap length(mm)00123Total loss Pm(W)45Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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RM Series RM14 Cores
Based on JIS C 2516, IEC Publication 60431 and DIN 41980.18.7±0.35.7±0.128.8±0.221.1±0.31.5ParameterCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g0.39370.01781250017116515570ø14.75±0.2541.6±0.629.5±0.590˚17–012.55Part No.PC40RM14Z-12
∗ Coil: ø0.4 2UEW 100Ts
NI limit vs. AL-value for
PC40RM14 gapped core (Typical)
103Temperature: 100˚CNI limit(AT)103Center pole gapTemperature rise of hot spot ∆T(˚C)AL-value(nH/N2)102Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
• All specifications are subject to change without notice.
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±.23410250.25.8±0.25Dimensions in mmAL-value (nH/N2)
4600 min. (1kHz, 0.5mA)∗9590 min. (100kHz, 200mT)
Core loss (W) at 100°C100kHz, 200mT4.75 max.
Calculated output power(forward converter mode)376W (100kHz)
AL-value vs. Air gap length forPC40RM14 core (Typical)
Temperature rise vs. Total loss forRM14 core (Typical)
(Ambient temperature: 25°C)10040%20%50103(AL-valuenH/N2)1020.1Air gap length(mm)100123Total loss Pm(W)45Measuring conditions• Coil: ø0.4 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil(58/71)
EPC Series EPC10 Cores
Parameter5.3min.3.4±0.11.9±0.15.0±0.17.6min.10.2±0.22.65±0.14.05±0.1Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.8917.89.391678.738.137.691.1Part No.PC44EPC10-ZPC50EPC10-Z
∗ Coil: ø0.1 2UEW 100Ts
AL-value (nH/N2)
1000±25% (1kHz, 0.5mA)∗660±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.072 max.0.025 max.Calculated output power(forward converter mode)5.4W (100kHz)13W (500kHz)
NI limit vs. AL-value for
PC44EPC10 gapped core (Typical)
Temperature: 100˚C102AL-value vs. Air gap length forPC44EPC10 core (Typical)
103Temperature rise vs. Total loss forEPC10 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)NI limit(AT)40%20%AL-value(nH/N2)102Center pole gap50101101102AL-value(nH/N2)1010.1Air gap length(mm)1000.5Total loss Pm(W)1NI limit vs. AL-value for
PC50EPC10 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC50EPC10 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreAL-value(nH/N2)NI limit(AT)102Center pole gapCoil10240%20%1011022AL-value(nH/N)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.1 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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EPC Series EPC13 Cores
Parameter8.3min.4.6±0.155.6±0.1510.5min.13.2±0.254.5±0.26.6±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)2.05±0.1C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g2.4530.612.538210.69.7123.02.1Part No.PC44EPC13-ZPC50EPC13-Z
∗ Coil: ø0.2 2UEW 100Ts
AL-value (nH/N2)870±25% (1kHz, 0.5mA)∗560±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.14 max.0.039 max.Calculated output power(forward converter mode)8W (100kHz)19W (500kHz)
NI limit vs. AL-value for
PC44EPC13 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44EPC13 core (Typical)
103Temperature rise vs. Total loss forEPC13 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)102Center pole gap5010220%40%101102AL-value(nH/N2)1010.1Air gap length(mm)1000.5Total loss Pm(W)1NI limit vs. AL-value for
PC50EPC13 gapped core (Typical)
Temperature: 100˚C10220%40%AL-value vs. Air gap length forPC50EPC13 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreAL-value(nH/N2)NI limit(AT)102CoilCenter pole gap1011011022AL-value(nH/N)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.2 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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EPC Series EPC17 Cores
Parameter11.5min.6.0±0.157.7±0.1514.3min.17.6±0.46.05±0.28.55±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)2.8±0.1C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.7640.222.891719.918.741.14.5Part No.PC44EPC17-ZPC50EPC17-Z∗ Coil: ø0.2 2UEW 100Ts
AL-value (nH/N2)
1150±25% (1kHz, 0.5mA)∗740±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.35 max.
0.10 max.Calculated output power(forward converter mode)20W (100kHz)35W (500kHz)NI limit vs. AL-value for
PC44EPC17 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44EPC17 core (Typical)
103Temperature rise vs. Total loss forEPC17 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)Center pole gap1025040%10220%1011022()AL-valuenH/N1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5NI limit vs. AL-value for
PC50EPC17 gapped core (Typical)AL-value vs. Air gap length forPC50EPC17 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCore10220%40%AL-value(nH/N2)NI limit(AT)Center pole gap102Coil101Temperature: 100˚C1011022()AL-valuenH/N1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.2 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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EPC Series EPC19 Cores
Parameter13.1min.6.0±0.158.5±0.1515.8min.19.1±0.47.25±0.29.75±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)2.5±0.1C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g2.0346.122.7105019.918.754.45.3Part No.PC44EPC19-ZPC50EPC19-Z
∗ Coil: ø0.2 2UEW 100Ts
AL-value (nH/N2)940±25% (1kHz, 0.5mA)∗680±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.4 max.0.12 max.Calculated output power(forward converter mode)27W (100kHz)55W (500kHz)
NI limit vs. AL-value for
PC44EPC19 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44EPC19 core (Typical)
103Temperature rise vs. Total loss forEPC19 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)Center pole gap1025040%10220%101102AL-value(nH/N2)1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5NI limit vs. AL-value for
PC50EPC19 gapped core (Typical)AL-value vs. Air gap length forPC50EPC19 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCore10220%40%AL-value(nH/N2)NI limit(AT)Center pole gap102Coil101Temperature: 100˚C1011022AL-value(nH/N)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.2 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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EPC Series EPC25 Cores
Parameter17.0min.8.0±0.211.5±0.220.65min.25.1±0.59.0±0.312.5±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)4.0±0.1C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.2859.246.4275042.640.685.513Part No.PC44EPC25-ZPC50EPC25-Z
∗ Coil: ø0.2 2UEW 100Ts
AL-value (nH/N2)
1560±25% (1kHz, 0.5mA)∗1080±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT1.11 max.0.32 max.Calculated output power(forward converter mode)63W (100kHz)127W (500kHz)
NI limit vs. AL-value for
PC44EPC25 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44EPC25 core (Typical)
103Temperature rise vs. Total loss forEPC25 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)Center pole gapAL-value(nH/N2)NI limit(AT)1025040%10220%102103AL-value(nH/N2)1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5NI limit vs. AL-value for
PC50EPC25 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC50EPC25 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreAL-value(nH/N2)Center pole gapCoilNI limit(AT)10210240%20%1021032AL-value(nH/N)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.2 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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EPC Series EPC25B Cores
Parameter16.5min.6.5±0.213.8±0.220.4min.25.1±0.58.78±0.1511.43±0.15Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.3946.233.3154032.430.362.1112.5±0.15Part No.PC44EPC25B-ZPC50EPC25B-Z
∗ Coil: ø0.23 2UEW 100Ts
AL-value (nH/N2)
1560±25% (1kHz, 0.5mA)∗1080±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT0.65 max.0.22 max.Calculated output power(forward converter mode)45W (100kHz)87W (500kHz)
NI limit vs. AL-value for
PC44EPC25B gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44EPC25B core (Typical)
103Temperature rise vs. Total loss forEPC25B core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)NI limit(AT)Center pole gap1025010240%20%101102AL-value(nH/N2)1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5NI limit vs. AL-value for
PC50EPC25B gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC50EPC25B core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreAL-value(nH/N2)Center pole gapCoilNI limit(AT)10240%10220%1011022AL-value(nH/N)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.23 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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EPC Series EPC27 Cores
Parameter18.5min.8.0±0.213.0±0.321.6min.27.1±0.512.0±0.316.0±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)4.0±0.1C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.3473.154.6400048.646.510818Part No.PC44EPC27-ZPC50EPC27-Z
∗ Coil: ø0.3 2UEW 100Ts
AL-value (nH/N2)
1540±25% (1kHz, 0.5mA)∗1030±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT1.56 max.0.46 max.Calculated output power(forward converter mode)80W (100kHz)161W (500kHz)
NI limit vs. AL-value for
PC44EPC27 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44EPC27 core (Typical)
103Temperature rise vs. Total loss forEPC27 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)Center pole gapAL-value(nH/N2)NI limit(AT)1025040%10220%102103AL-value(nH/N2)1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5NI limit vs. AL-value for
PC50EPC27 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC50EPC27 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCenter pole gapAL-value(nH/N2)NI limit(AT)102Coil10240%20%1021032AL-value(nH/N)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.3 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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EPC Series EPC27N Cores
Parameter19.0min.5.1±0.113.85±0.1520.8min.27.0±0.48.5±0.113.0±0.1Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional center pole areaCross-sectional winding area of coreWeight (approx.)C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.7055.933.0184029.729.760.4102.2±0.1Part No.PC44EPC27N-Z∗ Coil: ø0.3 2UEW 100Ts
AL-value (nH/N2)
1400±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT0.73 max.Calculated output power(forward converter mode)43W (100kHz)NI limit vs. AL-value for
PC44EPC27N gapped core (Typical)
Temperature: 100˚C10240%AL-value vs. Air gap length forPC44EPC27N core (Typical)
103Temperature rise vs. Total loss forEPC27N core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)AL-value(nH/N2)20%NI limit(AT)Center pole gap10250101102103AL-value(nH/N2)1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.3 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCoil• All specifications are subject to change without notice.
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EPC Series EPC30 Cores
Parameter20.0min.8.0±0.215.0±0.323.6min.30.1±0.513.0±0.317.5±0.2Dimensions in mmCore factorEffective magnetic path lengthEffective cross-sectional areaEffective core volumeCross-sectional center pole areaMinimum cross-sectional areaCross-sectional winding area of coreWeight (approx.)4.0±0.1C1eAeVeAcpAcp min.Acwmm–1mmmm2mm3mm2mm2mm2g1.3481.661.0498056.654.311723Part No.PC44EPC30-ZPC50EPC30-Z
∗ Coil: ø0.3 2UEW 100Ts
AL-value (nH/N2)
1570±25% (1kHz, 0.5mA)∗1060±25% (1kHz, 0.5mA)∗Core loss (W) at 100°C100kHz, 200mT500kHz, 50mT2.03 max.0.58 max.Calculated output power(forward converter mode)85W (100kHz)180W (500kHz)
NI limit vs. AL-value for
PC44EPC30 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC44EPC30 core (Typical)
103Temperature rise vs. Total loss forEPC30 core (Typical)
(Ambient temperature: 25°C)100Temperature rise of hot spot ∆T(˚C)Center pole gapAL-value(nH/N2)NI limit(AT)1025040%10220%102103AL-value(nH/N2)1010.1Air gap length(mm)1000.511.5Total loss Pm(W)22.5NI limit vs. AL-value for
PC50EPC30 gapped core (Typical)
Temperature: 100˚C103AL-value vs. Air gap length forPC50EPC30 core (Typical)
103Note: The temperature rise is measured in the
room whose temperature and humidity are fixed to 25°C and 45(%)RH. respectively. (approx. 400×300×300cm)
Measuring pointCoreCenter pole gapAL-value(nH/N2)NI limit(AT)102Coil10240%20%1021032AL-value(nH/N)1010.1Air gap length(mm)1Note: NI limit shows the point where the exciting
current is 20% and 40% away from its extended linear part.
Measuring conditions• Coil: ø0.3 2UEW 100Ts
• Frequency: 1kHz• Level: 0.5mA
• All specifications are subject to change without notice.
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MAXIMUM NUMBER OF TURNS ON BOBBINS
EI and EE SeriesEER SeriesETD SeriesPQ SeriesLP SeriesEP SeriesRM SeriesSMD Series
EPC and EEM SeriesWire Table
• All specifications are subject to change without notice.
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EI and EE Series (without terminal pin)
10383643432AWG value30282624222018EER Series
10383643432AWG value30282624222018BE62.3-1112CPHFRBE-60-5112BE-50-5112103BE-40-5112BE50.3-1112CPHFR103BEER49BEER42/20BEER40BEER28LBEER35N(turns)N(turns)BEER28BEER25.5BE-30-5112BE-22-5116102BE-19-51161021010.10.51Overall diameter of insulated wire(ømm)include insulation thickness1010.10.51Overall diameter of insulated wire(ømm)include insulation thicknessEI and EE Series (with terminal pin)
10383643432AWG value30282624222018ETD Series
10383643432AWG value30282624222018BE60-1112CPFRBE50-1112CPFRBE40-1112CPFRBE33-1112CPLFRBE35-1112CPLFRBE30-1110CPFRBE25-118CPFRBES16-1110CPSFRBE19-116CPFRBE28-1110CPLFRN(turns)BE22/19/6-118CPFR103103N(turns)BETD24-1112CPHFR102BE13-1110CPSFRBE16-116CPFRBE22-118CPFRBE12.5-1110CPFRBE10-118CPSFR1010.10.51Overall diameter of insulated wire(ømm)include insulation thickness1010.10.51Overall diameter of insulated wire(ømm)include insulation thickness102BETD19-1111CPHFR• All specifications are subject to change without notice.
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PQ Series
10383643432AWG value30282624222018EP Series
10383643432AWG value30282624222018103103N(turns)BPQ50/50BPQ40/40102BPQ35/35BPQ32/30BPQ26/25BPQ32/20BPQ20/20BPQ26/20BPQ20/161010.10.51Overall diameter of insulated wire(ømm)include insulation thicknessN(turns)102BEP10BEP13BEP71010.1BEP20BEP170.51Overall diameter of insulated wire(ømm)include insulation thicknessLP Series
10383643432AWG value30282624222018RM Series
10383643432AWG value30282624222018BLP32/13-018CPLFRBLP32/13-110CPLFR103BLP22/13-1110CPLFRBLP22/13-018CPLFRN(turns)BLP23/8-018CPLFR102102BRM14BRM12BRM10BRM5BRM4101101BRM60.51Overall diameter of insulated wire(ømm)include insulation thicknessBRM80.10.51Overall diameter of insulated wire(ømm)include insulation thickness0.1103• All specifications are subject to change without notice.
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N(turns)(70/71)
SMD Series
10450484644AWG value424038363432BER14.5/6-1110GAFR103N(turns)BER9.5/5-118GAFRBER11/5-1110GAFRBE8.9/8-11GFRBE5-916FFRBER11/3.9-1110GAFR1021010.010.050.1Overall diameter of insulated wire(ømm)include insulation thickness0.2EPC and EEM Series
10383643432AWG value30282624222018BEPC30-1112CPHFRBEPC27-1111CPHFRBEPC25-1111CPHFRBEPC25B-1111GAFRBEPC27N-1114CPHFRBEPC19-1111CPHFRBEPC19-1110GAFRBEPC19-1110SAFRBEPC17-1110CPHFRBEPC17-119GAFR103N(turns)102BEM12.7-118GAFRBEPC10-118GAFRBEPC13-1110CPHFRBEPC13-1110GAFR1010.10.51(Overall diameter of insulated wireømm)include insulation thickness• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
(71/71)
Wire Table
AWG403938373635343332313029282726252423222120191817161514131211109876AWG dia.(mm)0.0780.0890.1020.1140.1270.1420.1600.1800.2030.2260.2540.2870.3200.3600.4040.4540.5100.5740.6420.7240.8120.9101.0241.1561.2981.4561.6341.8332.0572.3082.5892.9053.2603.6574.104AWG area(mm2)0.00530.00660.00830.01050.01320.01660.02090.02640.03320.04180.05260.06630.08340.10500.13220.16640.20950.26380.33210.41810.56240.66270.83431.05041.32241.66482.09592.63863.32194.18215.26516.62858.344910.505913.2264Single dia.(mm)0.0930.1040.1170.1310.1470.1640.1840.2050.2290.2560.2850.3190.3560.3970.4430.4950.5520.6170.6890.7700.8610.9621.0761.2031.3461.5061.6851.8862.1112.3642.6472.9643.3203.7204.168Single area(mm2)0.00680.00850.01080.01350.01690.02120.02650.03300.04120.05130.06400.07970.09930.12370.15420.19220.23970.29900.37310.46590.58200.72720.90921.13711.42281.78092.23012.79353.50064.38825.50246.90188.659410.867413.6419Heavy dia.(mm)0.1000.1120.1260.1410.1580.1760.1960.2190.2440.2710.3020.3360.3740.4160.4640.5160.5750.6410.7140.7960.8870.9901.1041.2331.3761.5371.7171.9192.1452.3992.6833.0023.3593.7594.208Heavy area(mm2)0.00780.00990.01250.01560.01950.02430.03030.03760.04670.05780.07170.08880.10990.13620.16880.20930.25960.32220.40010.49720.61830.76930.95781.19331.48771.85592.31652.89313.61534.52015.65427.07638.859911.097713.9062• All specifications are subject to change without notice.
002-02 / 20050114 / e148.fm
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