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Ohm Bands

SMD code 78C — 634 Ω

A surface-mount resistor has no bands. This one is an EIA-96 marking: code 78 is 6.34 in the E96 series, C multiplies by 100. Parts marked this way are usually ±1%.

78C

reads as

634 Ω

The same part, in bands

The through-hole version of 634 Ω carries 5 colour bands instead.

634×1±1%
Blue6Orange3Yellow4Black×1Brown±1%

Everything about 634 Ω — power ratings, what ten cost, what is in stock.

Same value, other markings

634 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 V39.4 mW1/8 W
12 V227 mW1/2 W

What you can actually get

Parts made

80

at this value

Ten pieces

$0.21

not the reel price

Common packages

1206 · 0402 · 0603 · 0805

Codes you will mistake it for

One character apart from 78C. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.