國家標準規定了電阻的阻值按其精度分為兩大系列,分別為E-24系列和E-96系列,E-24系列精度為5%,E-96系列為1%, 在這兩種系列之外的電阻為非標電阻,較難采購。下面列出了常用的5％和1％精度電阻的標稱值,供大家設計時參考。?
精度為5％的碳膜電阻,以歐姆為單位的標稱值：?
1.0??? 5.6??? 33???? 160???? 820????? 3.9K???? 20K???? 100K???? 510K???? 2.7M?
1.1??? 6.2??? 36???? 180???? 910????? 4.3K???? 22K???? 110K???? 560K???? 3M?
1.2??? 6.8??? 39???? 200???? 1K?????? 4.7K???? 24K???? 120K???? 620K???? 3.3M?
1.3??? 7.5??? 43???? 220???? 1.1K???? 5.1K???? 27K???? 130K???? 680K???? 3.6M?
1.5??? 8.2??? 47???? 240???? 1.2K???? 5.6K???? 30K???? 150K???? 750K???? 3.9M?
1.6??? 9.1??? 51???? 270???? 1.3K???? 6.2K???? 33K???? 160K???? 820K???? 4.3M?
1.8??? 10???? 56???? 300???? 1.5K???? 6.6K???? 36K???? 180K???? 910K???? 4.7M?
2.0??? 11???? 62???? 330???? 1.6K???? 7.5K???? 39K???? 200K???? 1M?????? 5.1M?
2.2??? 12???? 68???? 360???? 1.8K???? 8.2K???? 43K???? 220K???? 1.1M???? 5.6M?
2.4??? 13???? 75???? 390???? 2K?????? 9.1K???? 47K???? 240K???? 1.2M???? 6.2M?
2.7??? 15???? 82???? 430???? 2.2K???? 10K????? 51K???? 270K???? 1.3M???? 6.8M?
3.0??? 16???? 91???? 470???? 2.4K???? 11K????? 56K???? 300K???? 1.5M???? 7.5M?
3.3??? 18???? 100??? 510???? 2.7K???? 12K????? 62K???? 330K???? 1.6M???? 8.2M?
3.6??? 20???? 110??? 560???? 3K?????? 13K????? 68K???? 360K???? 1.8M???? 9.1M?
3.9??? 22???? 120??? 620???? 3.2K???? 15K????? 75K???? 390K???? 2M?????? 10M?
4.3??? 24???? 130??? 680???? 3.3K???? 16K????? 82K???? 430K???? 2.2M???? 15M?
4.7??? 27???? 150??? 750???? 3.6K???? 18K????? 91K???? 470K???? 2.4M???? 22M?
5.1??? 30???
???
? 精度為1％的金屬膜電阻,以歐姆為單位的標稱值：?
10????? 33????? 100??? 332??? 1K?????? 3.32K??? 10.5K??? 34K????? 107K??? 357K?
10.2??? 33.2??? 102??? 340??? 1.02K??? 3.4K???? 10.7K??? 34.8K??? 110K??? 360K?
10.5??? 34????? 105??? 348??? 1.05K??? 3.48K??? 11K????? 35.7K??? 113K??? 365K?
10.7??? 34.8??? 107??? 350??? 1.07K??? 3.57K??? 11.3K??? 36K????? 115K??? 374K?
11????? 35.7??? 110??? 357??? 1.1K???? 3.6K???? 11.5K??? 36.5K??? 118K??? 383K?
11.3??? 36????? 113??? 360??? 1.13K??? 3.65K??? 11.8K??? 37.4K??? 120K??? 390K?
11.5??? 36.5??? 115??? 365??? 1.15K??? 3.74K??? 12K????? 38.3K??? 121K??? 392K?
11.8??? 37.4??? 118??? 374??? 1.18K??? 3.83K??? 12.1K??? 39K????? 124K??? 402K?
12????? 38.3??? 120??? 383??? 1.2K???? 3.9K???? 12.4K??? 39.2K??? 127K??? 412K?
12.1??? 39????? 121??? 390??? 1.21K??? 3.92K??? 12.7K??? 40.2K??? 130K??? 422K?
12.4??? 39.2??? 124??? 392??? 1.24K??? 4.02K??? 13K????? 41.2K??? 133K??? 430K?
12.7??? 40.2??? 127??? 402??? 1.27K??? 4.12K??? 13.3K??? 42.2K??? 137K??? 432K?
13????? 41.2??? 130??? 412??? 1.3K???? 4.22K??? 13.7K??? 43K????? 140K??? 442K?
13.3??? 42.2??? 133??? 422??? 1.33K??? 4.32K??? 14K????? 43.2K??? 143K??? 453K?
13.7??? 43????? 137??? 430??? 1.37K??? 4.42K??? 14.3K??? 44.2K??? 147K??? 464K?
14????? 43.2??? 140??? 432??? 1.4K???? 4.53K??? 14.7K??? 45.3K??? 150K??? 470K?
14.3??? 44.2??? 143??? 442??? 1.43K??? 4.64K??? 15K????? 46.4K??? 154K??? 475K?
14.7??? 45.3??? 147??? 453??? 1.47K??? 4.7K???? 15.4K??? 47K????? 158K??? 487K