Brown Grey Violet Gold — 180 MΩ
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
180 MΩ
Range at ±5%
171 MΩ – 189 MΩ
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 | Brown | 1st digit — 1 |
| 2 | Grey | 2nd digit — 8 |
| 3 | Violet | Multiplier — ×10M |
| 4 | Gold | Tolerance — ±5% |
In a circuit
Across 5 V
0.0278 µA · 0.139 µW · 1/8 W part
Across 12 V
0.0667 µA · 0.8 µW · 1/8 W part
Surface-mount marking for the same value: 187.
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.