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Ohm Bands

SMD code 305 — 3 MΩ

A surface-mount resistor has no bands. This one is a three-digit marking: 30 × 10⁵. Parts marked this way are usually ±5% or ±2%.

305

reads as

3 MΩ

The same part, in bands

The through-hole version of 3 MΩ carries 4 colour bands instead.

30×100k±5%
Orange3Black0Green×100,000Gold±5%

Everything about 3 MΩ — power ratings, what ten cost, what is in stock.

Same value, other markings

3 MΩ 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 V8.33 µW1/8 W
12 V48 µW1/8 W

What you can actually get

Parts made

116

at this value

Ten pieces

$4.32

not the reel price

Common packages

2512 · 0805 · 1206 · 0603

Codes you will mistake it for

One character apart from 305. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.