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Four Bands

5.1 kΩ resistor colour code

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

51×100±5
Green5Brown1Red×100Gold±5%

Nominal

5.1 kΩ

5,100 ohms

Real range at ±5%

4.845 kΩ – 5.355 kΩ

A gold band allows this much drift.

Series

E24

E24 only — stocked less often.


Band by band

BandColourMeaning
1Green1st digit — 5
2Brown2nd digit — 1
3RedMultiplier — ×100
4GoldTolerance — ±5%

The same value on a five-band part

Precision resistors carry three significant digits instead of two, so the same 5.1 kΩ looks different.

GreenBrownBlackRedBrown