SMD code 500 — 50 Ω
A surface-mount resistor has no bands. This one is a three-digit marking: 50 × 10⁰. Parts marked this way are usually ±5% or ±2%.
500
reads as
50 Ω
Same value, other markings
50 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 | 500 mW | 1 W |
| 12 V | 2.88 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
29
at this value
Common packages
1206 · TO-220 · 2512 · 0404
Codes you will mistake it for
One character apart from 500. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.