SMD code 25A — 1.78 Ω
A surface-mount resistor has no bands. This one is an EIA-96 marking: code 25 is 1.78 in the E96 series, A multiplies by 1. Parts marked this way are usually ±1%.
25A
reads as
1.78 Ω
The same part, in bands
The through-hole version of 1.78 Ω carries 5 colour bands instead.
Everything about 1.78 Ω — power ratings, what ten cost, what is in stock.
How much it can take
| Across it | Dissipated | Smallest package that copes |
|---|---|---|
| 5 V | 14 W | no standard part — needs a power resistor or a heatsink |
| 12 V | 80.9 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
22
at this value
Common packages
0603 · 0805 · 1210 · 2512
Codes you will mistake it for
One character apart from 25A. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.