SMD code 1R54 — 1.54 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: the R is the decimal point — 1.54 Ω. Parts marked this way are usually ±1% or tighter.
1R54
reads as
1.54 Ω
The same part, in bands
The through-hole version of 1.54 Ω carries 5 colour bands instead.
Everything about 1.54 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
1.54 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 | 16.2 W | no standard part — needs a power resistor or a heatsink |
| 12 V | 93.5 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
21
at this value
Ten pieces
$0.34
not the reel price
Common packages
2010 · 0402 · 1206 · 0603
Codes you will mistake it for
One character apart from 1R54. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.