Yellow White Gold Gold — 4.9 Ω
Read left to right, starting from the end where the bands are grouped. The gold band is the tolerance and always sits alone at the far end.
Value
4.9 Ω
Range at ±5%
4.655 Ω – 5.145 Ω
Standard value
Non-standard
No E24 part carries this value — check you are reading from the right end.
What each band says
| Band | Colour | Meaning |
|---|---|---|
| 1 | Yellow | 1st digit — 4 |
| 2 | White | 2nd digit — 9 |
| 3 | Gold | Multiplier — ×0.1 |
| 4 | Gold | Tolerance — ±5% |
In a circuit
Across 5 V
1.02 A · 5.1 W · part
Across 12 V
2.45 A · 29.4 W · part
Surface-mount marking for the same value: 4R9.
If you misread one band
Brown and red, or orange and red, are easy to confuse under a desk lamp. These are the codes one band away from this one.