Two methods of inductor markings are predominant -
EIA (Electronic Industries Association) and Mil-Spec (Military
Specification). Both use the standard color-number association familiar with color-coded
resistors. The chart and examples below show that a Mil-Spec inductor can be identified
by the presence of a double-width silver band at the left edge. Unless specified
otherwise by the manufacturer, units are in microhenrys (µH). Mil-Spec inductors
- and possibly some EIA types - use a silver or gold band in the multiplier to denote
0.1 and 0.01, respectively.
|
Inductor Color Codes(4-Band EIA and 5-Band
Mil-Spec Inductors) |
| Silver |
Mil-Spec |
|
|
0.01 |
±10% |
| Gold |
|
|
|
0.1 |
±5% |
| Black |
|
0 |
0 |
1 |
|
| Brown |
|
1 |
1 |
10 |
±1% |
| Red |
|
2 |
2 |
100 |
±2% |
| Orange |
|
3 |
3 |
1000 (=1k) |
±3% |
| Yellow |
|
4 |
4 |
10k |
±4% |
| Green |
|
5 |
5 |
100k |
|
| Blue |
|
6 |
6 |
1000k |
|
| Violet |
|
7 |
7 |
|
|
| Gray |
|
8 |
8 |
|
|
| White |
|
9 |
9 |
|
|
| 5 - 6 - 1 - Gold 56 * 101 µH,
±5% 56 * 10 µH, ±5% 560 µH, ±5%
|
Silver - 6 - 2 - Gold - Red Mil-Spec
62 * 0.01 µH, ±2% Mil-Spec 0.62 µH, ±2% Mil-Spec 620 nH, ±2%
|
|
Related Pages on RF Cafe - Inductors &
Inductance Calculations
- Inductance Conversions -
Standard Inductor Values -
Inductor Vendors
Posted February 9, 2015
|
