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Four Bands

56 Ω resistor colour code

Four bands: Green · Blue · Black · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.

56×1±5
Green5Blue6Black×1Gold±5%

Nominal

56 Ω

56 ohms

Real range at ±5%

53.2 Ω – 58.8 Ω

A gold band allows this much drift.

Series

E12

Held in almost every parts drawer.


Band by band

BandColourMeaning
1Green1st digit — 5
2Blue2nd digit — 6
3BlackMultiplier — ×1
4GoldTolerance — ±5%

The same value on a five-band part

Precision resistors carry three significant digits instead of two, so the same 56 Ω looks different.

GreenBlueBlackBlackBrown