SMD code 391 — 390 Ω
A surface-mount resistor has no bands. This one is a three-digit marking: 39 × 10¹. Parts marked this way are usually ±5% or ±2%.
391
reads as
390 Ω
The same part, in bands
The through-hole version of 390 Ω carries 4 colour bands instead.
Everything about 390 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
390 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 it | Dissipated | Smallest package that copes |
|---|---|---|
| 5 V | 64.1 mW | 1/4 W |
| 12 V | 369 mW | 1 W |
What you can actually get
Parts made
196
at this value
Ten pieces
$0.18
not the reel price
Common packages
0805 · 1206 · 0402 · 0603
Codes you will mistake it for
One character apart from 391. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.