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Ohm Bands

Orange Black White Brown Brown — 3.09 kΩ

Read left to right, starting from the end where the bands are grouped. The brown band is the tolerance and always sits alone at the far end. Five bands means three significant digits — this is a precision part.

309×10±1%
Orange3Black0White9Brown×10Brown±1%

Value

3.09 kΩ

Range at ±1%

3.0591 kΩ – 3.1209 kΩ


What each band says

BandColourMeaning
1Orange1st digit — 3
2Black2nd digit — 0
3White3rd digit — 9
4BrownMultiplier — ×10
5BrownTolerance — ±1%

In a circuit

Across 5 V

1.62 mA · 8.09 mW · 1/8 W part

Across 12 V

3.88 mA · 46.6 mW · 1/8 W part

Surface-mount marking for the same value: 312.

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.