贴片电阻片式固定电阻器，英文称呼：Chip Fixed Resistor，又称贴片电阻(SMD Resistor),是金属玻璃铀电阻器中的一种是将金属粉和玻璃铀粉混合，采用丝网印刷法印在基板上制成的电阻器耐潮湿，高温，温度系数小体积小，重量轻；适应再流焊与波峰焊；电性能稳定，可靠性高；装配成本低，并与自动装贴设备匹配；机械强度高、高频特性优越具有体积小、重量轻、安装密度高，抗震性强．抗干扰能力强，高频特性好等优点，广泛应用于计算机、、电子辞典、医疗电子产品、摄录机、电子电度表及VCD机等片状电阻器的阻值和一般电阻器一样，在电阻体上标明．就是在电阻体上用三位数字来标明其阻值它的第一位和第二位为有效数字，第三位表示在有效数字后面所加“0”的个数．这一位不会出现字母例如：“472′’表示“4700Ω”；“151”表示“150Ω”如果是小数．则用“R”表示“小数点”．并占用一位有效数字，其余两位是有效数字尺寸参数选用: 英制(mil)公制(mm)长(L)(mm)宽(W)(mm)高(t)(mm)a(mm)b(mm)02016030.60±0.050.30±0.050.23±0.050.10±0.050.15±0.05040210051.00±0.100.50±0.100.30±0.100.20±0.100.25±0.10060316081.60±0.150.80±0.150.40±0.100.30±0.200.30±0.20080520122.00±0.201.25±0.150.50±0.100.40±0.200.40±0.20120632163.20±0.201.60±0.150.55±0.100.50±0.200.50±0.20121032253.20±0.202.50±0.200.55±0.100.50±0.200.50±0.20181248324.50±0.203.20±0.200.55±0.100.50±0.200.50±0.20201050255.00±0.202.50±0.200.55±0.100.60±0.200.60±0.20251264326.40±0.203.20±0.200.55±0.100.60±0.200.60±0.20功率明细选用: 英制(inch)公制(mm)常规功率系列提升功率系列最大工作电压(V)020106031/20W/25040210051/16W/50060316081/16W1/10W50080520121/10W1/8W150120632161/8W1/4W200121032251/4W1/3W200181248321/2W/200201050251/2W3/4W200251264321W/200包装与系列参数选用: 尺寸精度包装贴片电阻12060.015K贴片电阻12060.055K贴片电阻08050.015K贴片电阻08050.055K贴片电阻06030.015K贴片电阻06030.055K贴片电阻04020.0510K贴片电阻有5种参数，即尺寸、阻值、允差、温度系数及包装。
1．尺寸系列贴片电阻系列一般有7种尺寸，用两种尺寸代码来表示一种尺寸代码是由4位数字表示的EIA(美国电子工业协会)代码，前两位与后两位分别表示电阻的长与宽，以英寸为单位另一种是米制代码，也由4位数字表示，其单位为毫米不同尺寸的电阻，其功率额定值也不同2．阻值系列标称阻值是按系列来确定的各系列是由电阻的允差来划分的(允差越小则阻值划分得越多)，其中最常用的是E-24(电阻值的允差为±5%)贴片电阻表面上用三位数字来表示阻值，其中第一位、第二位为有效数，第三位数字表示后接零的数目有小数点时用“R”来表示，并占一位有效位数3．允差贴片电阻(碳膜电阻)的允差有4级，即F级，±l%；G级，±2%；J级，±5%；K级，±10%4．温度系数贴片电阻的温度系数有2级，即w级，±200ppm/℃；X级，±lOOppm/℃只有允差为F级的电阻才采用x级，其它级允差的电阻一般为w级5．包装主要有散装及带状卷装两种贴片电阻的工作温度范围为-55--+125℃，最大工作电压与尺寸有关：0201最低，0402及0603为50V，0805为150V，其它尺寸为200VE96数值工业规范标识(1): 数值-><-编码数值-><-编码数值-><-编码数值-><-编码11R0012.112R127.427R461.961R91.11R1012.412R42828R063.463R41.21R2012.712R728.728R764.964R91.31R301313R029.429R466.566R51.41R4013.313R330.130R168.168R11.51R5013.713R730.930R969.869R81.61R601414R031.631R671.571R51.81R8014.314R332.432R473.273R222R0014.714R733.233R27575R02.22R201515R03434R076.876R82.42R4015.415R434.834R878.778R72.72R7015.815R835.735R780.680R633R0016.216R236.536R582.582R53.33R3016.516R537.437R484.584R53.63R6016.916R938.338R386.686R63.93R9017.417R439.239R288.788R74.34R3017.817R840.240R290.990R94.74R7018.218R241.241R293.193R15.15R1018.718R742.242R295.395R35.65R6019.119R143.243R297.697R66.26R2019.619R644.244R2 6.86R802020R045.345R310010007.57R5020.520R546.446R410210208.28R202121R047.547R510510509.19R1021.521R548.748R7107107022.122R149.949R911011001010R022.622R651.151R1113113010.210R223.623R652.352R3115115010.510R523.723R753.654R9118118010.710R724.324R354.954R912112101111R024.924R956.256R2124124011.311R325.525R557.657R6127127011.511R526.126R15959R0130130011.811R826.726R760.460R41331330数值-><-编码数值-><-编码数值-><-编码数值-><-编码1371370309309069869801.54K15411401400316316071571501.58K15811431430324324073273201.62K16211471470332332075075001.65K16511501500340340076876801.69K16911541540348348078778701.74K17411581580357357080680601.78K17811621620365365082582501.82K18211651650374374084584501.87K18711691690383383086686601.91K19111741740392392088788701.96K19611781780402402090990902K20011821820412412093193102.05K20511871870422422095395302.1K21011911910432432997697602.15K215119619604424429 2.21K2211200200045345301K10012.26K2261205205046446401.02K10212.32K2321210210047547501.05K10512.37K2371215215048748701.07K10712.43K2431221221049949901.1K11012.49K2491226226051151101.13K11312.55K2551236236052352301.15K11512.61K2611237237053653601.18K11812.67K2671243243054954901.21K12112.74K2741249249056256201.24K1241 255255057657601。