SMD code 1210 — 121 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: 121 × 10⁰. Parts marked this way are usually ±1% or tighter.
1210
reads as
121 Ω
The same part, in bands
The through-hole version of 121 Ω carries 5 colour bands instead.
Everything about 121 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
121 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 | 207 mW | 1/2 W |
| 12 V | 1.19 W | 5 W |
What you can actually get
Parts made
94
at this value
Common packages
1206 · 0805 · 0603 · 0402
Codes you will mistake it for
One character apart from 1210. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.