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Ohm Bands

SMD code 3R6 — 3.6 Ω

A surface-mount resistor has no bands. This one is a three-digit marking: the R is the decimal point — 3.6 Ω. Parts marked this way are usually ±5% or ±2%.

3R6

reads as

3.6 Ω

The same part, in bands

The through-hole version of 3.6 Ω carries 4 colour bands instead.

36×0.1±5%
Orange3Blue6Gold×0.1Gold±5%

Everything about 3.6 Ω — power ratings, what ten cost, what is in stock.

How much it can take

Across itDissipatedSmallest package that copes
5 V6.94 Wno standard part — needs a power resistor or a heatsink
12 V40 Wno standard part — needs a power resistor or a heatsink

What you can actually get

Parts made

115

at this value

Common packages

1206 · 0805 · 1210 · 0603

Codes you will mistake it for

One character apart from 3R6. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.