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Ohm Bands

Blue Yellow Red Gold — 6.4 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.

64×100±5%
Blue6Yellow4Red×100Gold±5%

Value

6.4 kΩ

Range at ±5%

6.08 kΩ – 6.72 kΩ

Standard value

Non-standard

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


What each band says

BandColourMeaning
1Blue1st digit — 6
2Yellow2nd digit — 4
3RedMultiplier — ×100
4GoldTolerance — ±5%

In a circuit

Across 5 V

781 µA · 3.91 mW · 1/8 W part

Across 12 V

1.88 mA · 22.5 mW · 1/8 W part

Surface-mount marking for the same value: 642.

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.