SMD code 721 — 720 Ω
A surface-mount resistor has no bands. This one is a three-digit marking: 72 × 10¹. Parts marked this way are usually ±5% or ±2%.
721
reads as
720 Ω
Same value, other markings
720 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 | 34.7 mW | 1/8 W |
| 12 V | 200 mW | 1/2 W |
What you can actually get
Parts made
1
at this value
Common packages
0603
Codes you will mistake it for
One character apart from 721. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.