SMD code 40A — 2.55 Ω
A surface-mount resistor has no bands. This one is an EIA-96 marking: code 40 is 2.55 in the E96 series, A multiplies by 1. Parts marked this way are usually ±1%.
40A
reads as
2.55 Ω
The same part, in bands
The through-hole version of 2.55 Ω carries 5 colour bands instead.
Everything about 2.55 Ω — power ratings, what ten cost, what is in stock.
How much it can take
| Across it | Dissipated | Smallest package that copes |
|---|---|---|
| 5 V | 9.8 W | no standard part — needs a power resistor or a heatsink |
| 12 V | 56.5 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
24
at this value
Ten pieces
$0.53
not the reel price
Common packages
0805 · 1206 · 0603 · 0201
Codes you will mistake it for
One character apart from 40A. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.