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Ohm Bands

SMD code 20A — 1.58 Ω

A surface-mount resistor has no bands. This one is an EIA-96 marking: code 20 is 1.58 in the E96 series, A multiplies by 1. Parts marked this way are usually ±1%.

20A

reads as

1.58 Ω

The same part, in bands

The through-hole version of 1.58 Ω carries 5 colour bands instead.

158×0.01±1%
Brown1Green5Grey8Silver×0.01Brown±1%

Everything about 1.58 Ω — power ratings, what ten cost, what is in stock.

How much it can take

Across itDissipatedSmallest package that copes
5 V15.8 Wno standard part — needs a power resistor or a heatsink
12 V91.1 Wno standard part — needs a power resistor or a heatsink

What you can actually get

Parts made

22

at this value

Ten pieces

$0.26

not the reel price

Common packages

0805 · 0603 · 0402 · 2512

Codes you will mistake it for

One character apart from 20A. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.