SMD code 3905 — 39 MΩ
A surface-mount resistor has no bands. This one is a four-digit marking: 390 × 10⁵. Parts marked this way are usually ±1% or tighter.
3905
reads as
39 MΩ
Same value, other markings
39 MΩ 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 | 0.641 µW | 1/8 W |
| 12 V | 3.69 µW | 1/8 W |
What you can actually get
Parts made
27
at this value
Common packages
1206 · 0612 · 2512 · 0805
Codes you will mistake it for
One character apart from 3905. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.