贴片电阻阻值表
2024-01-14
来源:步旅网
标准值1.01.11.21.31.51.61.82.02.22.42.73.03.33.63.94.34.75.15.66.26.87.58.29.11Ω~10Ω实际3位4位值标标注1Ω1R01R001.1Ω1R11R101.2Ω1R21R201.3Ω1R31R301.5Ω1R51R501.6Ω1R61R601.8Ω1R81R802Ω2R02R002.2Ω2R22R202.4Ω2R42R402.7Ω2R72R703Ω3R03R003.3Ω3R33R303.6Ω3R63R603.9Ω3R93R904.3Ω4R34R304.7Ω4R74R705.1Ω5R15R105.6Ω5R65R606.2Ω6R26R206.8Ω6R86R807.5Ω7R57R508.2Ω8R28R209.1Ω9R19R1010Ω~100Ω实际3位4位值标标注10Ω10010R011Ω11011R012Ω12012R013Ω13013R015Ω15015R016Ω16016R018Ω18018R020Ω20020R022Ω22022R024Ω24024R027Ω27027R030Ω30030R033Ω33033R036Ω36036R039Ω39039R043Ω43043R047Ω47047R051Ω51051R056Ω56056R062Ω62062R068Ω68068R075Ω75075R082Ω82082R091Ω91091R0E24系列:常用精度5%,1%的贴片电阻范围(单位:Ω)100Ω~1kΩ1kΩ~10kΩ10kΩ~100kΩ实际3位4位实际3位4位实际3位4位值标标注值标标注值标标注100Ω101100R1kΩ102100110kΩ1031002110Ω111110R1.1kΩ112110111kΩ1131102120Ω121120R1.2kΩ122120112kΩ1231202130Ω131130R1.3kΩ132130113kΩ1331302150Ω151150R1.5kΩ152150115kΩ1531502160Ω161160R1.6kΩ162160116kΩ1631602180Ω181180R1.8kΩ182180118kΩ1831802200Ω201200R2kΩ202200120kΩ2032002220Ω221220R2.2kΩ222220122kΩ2232202240Ω241240R2.4kΩ242240124kΩ2432402270Ω271270R2.7kΩ272270127kΩ2732702300Ω301300R3kΩ302300130kΩ3033002330Ω331330R3.3kΩ332330133kΩ3333302360Ω361360R3.6kΩ362360136kΩ3633602390Ω391390R3.9kΩ392390139kΩ3933902430Ω431430R4.3kΩ432430143kΩ4334302470Ω471470R4.7kΩ472470147kΩ4734702510Ω511510R5.1kΩ512510151kΩ5135102560Ω561560R5.6kΩ562560156kΩ5635602620Ω621620R6.2kΩ622620162kΩ6236202680Ω681680R6.8kΩ682680168kΩ6836802750Ω751750R7.5kΩ752750175kΩ7537502820Ω821820R8.2kΩ822820182kΩ8238202910Ω911910R9.1kΩ912910191kΩ9139102100kΩ~1MΩ实际3位4位值标标注100kΩ1041003110kΩ1141103120kΩ1241203130kΩ1341303150kΩ1541503160kΩ1641603180kΩ1841803200kΩ2042003220kΩ2242203240kΩ2442403270kΩ2742703300kΩ3043003330kΩ3343303360kΩ3643603390kΩ3943903430kΩ4344303470kΩ4744703510kΩ5145103560kΩ5645603620kΩ6246203680kΩ6846803750kΩ7547503820kΩ8248203910kΩ91491031MΩ~10MΩ实际3位4位值标标注1MΩ10510041.1MΩ11511041.2MΩ12512041.3MΩ13513041.5MΩ15515041.6MΩ16516041.8MΩ18518042MΩ20520042.2MΩ22522042.4MΩ24524042.7MΩ27527043MΩ30530043.3MΩ33533043.6MΩ36536043.9MΩ39539044.3MΩ43543044.7MΩ47547045.1MΩ51551045.6MΩ56556046.2MΩ62562046.8MΩ68568047.5MΩ75575048.2MΩ82582049.1MΩ9159104 上面列出了常用的5%和1%精度贴片电阻的标称值和换算值,仅供大家使用时参考。电阻阻值换算关系Ω= Ω
k = kΩ = 1,000 ΩM = MΩ = 1,000,000 Ω
微型贴片电阻上的代码一般标为3位数或4位数的,3位数精度为5%,4位数的精度为1%,请大家根据精度要求挑选合适的代码类型。
LED-电流20毫安就是0.02安,,LED的额定电压是2.3伏。。
所以电阻需要分压2.7伏,【(总电压-LED电压×LED个数)=分压】【分压÷LED电流0.02毫安】所以串联电阻的大小为2.7伏/0.02安=135欧姆