3.9 Ω resistor colour code
Four bands: Orange · White · Gold · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
3.9 Ω
3.9 ohms
Real range at ±5%
3.705 Ω – 4.095 Ω
A gold band allows this much drift.
Series
E12
Held in almost every parts drawer.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | Orange | 1st digit — 3 |
| 2 | White | 2nd digit — 9 |
| 3 | Gold | Multiplier — ×0.1 |
| 4 | Gold | Tolerance — ±5% |
The same value on a five-band part
Precision resistors carry three significant digits instead of two, so the same 3.9 Ω looks different.
OrangeWhiteBlackGoldBrown