SMD code 257 — 250 MΩ
A surface-mount resistor has no bands. This one is a three-digit marking: 25 × 10⁷. Parts marked this way are usually ±5% or ±2%.
257
reads as
250 MΩ
Same value, other markings
250 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 | 0.1 µW | 1/8 W |
| 12 V | 0.576 µW | 1/8 W |
What you can actually get
Parts made
26
at this value
Common packages
2512 · 2010 · 0603 · 1210
Codes you will mistake it for
One character apart from 257. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.