精密電阻常識

1、二、低阻值電阻a.R表示小數(shù)點，如：絲印為XRX，其值為X.X絲印為RXXX，其值為0.XXX電阻常識一、常用電阻b.表面絲印4位數(shù)，如下圖：a.表面絲印3位數(shù)。如下圖：第1位，2位，3位數(shù)字是有效數(shù)字,第1位，2位數(shù)字是有效數(shù)字，第三位數(shù)是十的乘冪位數(shù)是十的乘幕。3R=10x102R=100x10R020R=0.02?b.0歐電阻R=3.3?LI000M1三.特殊電阻（精密電阻）a.EIA-96 MARKING（標志）代號阻值代號阻值代號阻值代號阻值代號阻值代號阻值代號阻值代號阻值11001313325178372374931661422738585:75021021413726182382

2、435032462432748686768310515140271873924951332634427587877874107161432819140255523406445376888880651101714729196412615334865464778989P82561131815030200422675435766475789C9084571151915431205432745536567487799191P 866811820158322104428056374684998C929288791212116233215452875738369511819393r909101242216

3、53422146294583927052382949493111127231693522647301594027153683715959531213024174362324830960412725498473296976此類電阻表面絲印只有三位數(shù)，第一，二位數(shù)是有效數(shù)字，其值參照上表 第三位字符表示十的乘幕，字母的代表值分別如下：2101345S=10-R=10-A=10 B=10 C=102 D=10 E=10 F=10例：下列絲印的電阻值。2R=124x10 =12.4K?b.精密電阻。（與"a"表中表示方法有所不同，但算出的結(jié)果一樣，可互補使用）E96標準（公差為：1

4、%）數(shù)字值數(shù)字值數(shù)字值數(shù)字值數(shù)字值數(shù)字值字母代號及倍乘數(shù)1 10.01714.73321.54931.(>6546.48168.1Y-0.1 gX-1 5A-10 2B-100 )C-1000 尹10000 戶100000 尸1000000655679362 10.218153422.15032.©647.58269.310.51915.43522.65133.26748.78371.410.72015.813623.25234.()6849.98473.511.021 16.23723.75334.(16951.18575.(611.32216.5>3824.35435

5、.：7052.38676.711.52316.9)3924.95536J>7153.58778.8 11.82417.44025.55637,17254.98880.912.12517.84126.15738.：切356.：28982.1012.426 18.24226.75839.：!7457.69084.1112.72718.74327.45940.：!7559.09186.1213.02819.14428.C6041.：!7660.49288.1313.32919.64528.76142.：!7761.99390.1413.73020.04629.46243.：!7863.49493.115143120.54730.16344.：!7964.99595.1614.33221.(14830.96445.：乞0