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Ohm Bands

Blue Grey Black Gold Brown — 68 Ω

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.

680×0.1±1%
Blue6Grey8Black0Gold×0.1Brown±1%

Value

68 Ω

Range at ±1%

67.32 Ω – 68.68 Ω

Standard value

E6

Full page for 68 Ω →


What each band says

BandColourMeaning
1Blue1st digit — 6
2Grey2nd digit — 8
3Black3rd digit — 0
4GoldMultiplier — ×0.1
5BrownTolerance — ±1%

In a circuit

Across 5 V

73.5 mA · 368 mW · 1 W part

Across 12 V

176 mA · 2.12 W · 5 W part

Surface-mount marking for the same value: 680.

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.