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Ohm Bands

SMD code 215 — 2.1 MΩ

A surface-mount resistor has no bands. This one is a three-digit marking: 21 × 10⁵. Parts marked this way are usually ±5% or ±2%.

215

reads as

2.1 MΩ

The same part, in bands

The through-hole version of 2.1 MΩ carries 5 colour bands instead.

210×10k±1%
Red2Brown1Black0Yellow×10kBrown±1%

Everything about 2.1 MΩ — power ratings, what ten cost, what is in stock.

Same value, other markings

2.1 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 V11.9 µW1/8 W
12 V68.6 µW1/8 W

What you can actually get

Parts made

17

at this value

Ten pieces

$0.21

not the reel price

Common packages

0805 · 1206 · 0402 · 2512

Codes you will mistake it for

One character apart from 215. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.