5道色环电阻标示方法 Five-Band Code
| Band | 1 | 2 | 3 | 4 | 5 |
| Color | Digit | Multiplier | Tolerance | ||
| Black | 0 | 0 | 0 | x 1 ohms | |
| Brown | 1 | 1 | 1 | x 10 ohms | ± 1% (F) |
| Red | 2 | 2 | 2 | x 100 ohms | ± 2% (G) |
| Orange | 3 | 3 | 3 | x 1K ohms | |
| Yellow | 4 | 4 | 4 | x 10K ohms | |
| Green | 5 | 5 | 5 | x 100K ohms | ± 0.5% (D) |
| Blue | 6 | 6 | 6 | x 1M ohms | ± 0.25% (C) |
| Violet | 7 | 7 | 7 | x 10M ohms | ± 0.10% (B) |
| Grey | 8 | 8 | 8 | ± 0.05% | |
| White | 9 | 9 | 9 | ||
| Gold | x 0.1 ohms | ± 5% (J) | |||
| Silver | x 0.01 ohms | ± 10% (K) | |||
备注：此图为五道色环电阻的颜色与组织对照表。其中1 2 3 道环所代表的数字，为有效阻值；第4环代表倍率；第五环代表误差。其中第5 道色环偏离其它的四道色环距离稍远些，其它四道色环之间的距离均匀分布，以此来判断计算色环电阻的阻值方法。
