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Ohm Bands

SMD code 270 — 27 Ω

A surface-mount resistor has no bands. This one is a three-digit marking: 27 × 10⁰. Parts marked this way are usually ±5% or ±2%.

270

reads as

27 Ω

The same part, in bands

The through-hole version of 27 Ω carries 4 colour bands instead.

27×1±5%
Red2Violet7Black×1Gold±5%

Everything about 27 Ω — power ratings, what ten cost, what is in stock.

Same value, other markings

27 Ω is printed several ways depending on the part's precision and size. A board can carry all of them at once.

How much it can take

Across itDissipatedSmallest package that copes
5 V926 mW2 W
12 V5.33 Wno standard part — needs a power resistor or a heatsink

What you can actually get

Parts made

180

at this value

Ten pieces

$0.14

not the reel price

Common packages

0603 · 1206 · 0805 · 0402

Codes you will mistake it for

One character apart from 270. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.