SMD code 6420 — 642 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: 642 × 10⁰. Parts marked this way are usually ±1% or tighter.
6420
reads as
642 Ω
How much it can take
| Across it | Dissipated | Smallest package that copes |
|---|---|---|
| 5 V | 38.9 mW | 1/8 W |
| 12 V | 224 mW | 1/2 W |
What you can actually get
Parts made
3
at this value
Common packages
1206 · 0603 · 0805
Codes you will mistake it for
One character apart from 6420. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.