SMD code 1540 — 154 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: 154 × 10⁰. Parts marked this way are usually ±1% or tighter.
1540
reads as
154 Ω
The same part, in bands
The through-hole version of 154 Ω carries 5 colour bands instead.
Everything about 154 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
154 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 | 162 mW | 1/2 W |
| 12 V | 935 mW | 2 W |
What you can actually get
Parts made
74
at this value
Common packages
1206 · 0805 · 0603 · 0402
Codes you will mistake it for
One character apart from 1540. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.