SMD code 1240 — 124 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: 124 × 10⁰. Parts marked this way are usually ±1% or tighter.
1240
reads as
124 Ω
The same part, in bands
The through-hole version of 124 Ω carries 5 colour bands instead.
Everything about 124 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
124 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 | 202 mW | 1/2 W |
| 12 V | 1.16 W | 5 W |
What you can actually get
Parts made
87
at this value
Ten pieces
$0.21
not the reel price
Common packages
0805 · 1206 · 0402 · 0603
Codes you will mistake it for
One character apart from 1240. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.