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Four Bands

1.8 MΩ resistor colour code

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

18×100000±5
Brown1Grey8Green×100 kGold±5%

Nominal

1.8 MΩ

1,800,000 ohms

Real range at ±5%

1.71 MΩ – 1.89 MΩ

A gold band allows this much drift.

Series

E12

Held in almost every parts drawer.


Band by band

BandColourMeaning
1Brown1st digit — 1
2Grey2nd digit — 8
3GreenMultiplier — ×100 k
4GoldTolerance — ±5%

The same value on a five-band part

Precision resistors carry three significant digits instead of two, so the same 1.8 MΩ looks different.

BrownGreyBlackGreenBrown