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Ohm Bands

Violet Violet Black Gold — 77 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.

77×1±5%
Violet7Violet7Black×1Gold±5%

Value

77 Ω

Range at ±5%

73.15 Ω – 80.85 Ω

Standard value

Non-standard

No E24 part carries this value — check you are reading from the right end.


What each band says

BandColourMeaning
1Violet1st digit — 7
2Violet2nd digit — 7
3BlackMultiplier — ×1
4GoldTolerance — ±5%

In a circuit

Across 5 V

64.9 mA · 325 mW · 1 W part

Across 12 V

156 mA · 1.87 W · 5 W part

Surface-mount marking for the same value: 770.

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.