SMD code 3972 — 39.7 kΩ
A surface-mount resistor has no bands. This one is a four-digit marking: 397 × 10². Parts marked this way are usually ±1% or tighter.
3972
reads as
39.7 kΩ
How much it can take
| Across it | Dissipated | Smallest package that copes |
|---|---|---|
| 5 V | 630 µW | 1/8 W |
| 12 V | 3.63 mW | 1/8 W |
What you can actually get
Parts made
2
at this value
Common packages
0402 · 1206
Codes you will mistake it for
One character apart from 3972. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.