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Ohm Bands

Brown Grey Yellow Gold — 180 kΩ

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.

18×10k±5%
Brown1Grey8Yellow×10kGold±5%

Value

180 kΩ

Range at ±5%

171 kΩ – 189 kΩ

Standard value

E12

Full page for 180 kΩ →


What each band says

BandColourMeaning
1Brown1st digit — 1
2Grey2nd digit — 8
3YellowMultiplier — ×10k
4GoldTolerance — ±5%

In a circuit

Across 5 V

27.8 µA · 139 µW · 1/8 W part

Across 12 V

66.7 µA · 800 µW · 1/8 W part

Surface-mount marking for the same value: 184.

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.