SMD code 1R58 — 1.58 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: the R is the decimal point — 1.58 Ω. Parts marked this way are usually ±1% or tighter.
1R58
reads as
1.58 Ω
The same part, in bands
The through-hole version of 1.58 Ω carries 5 colour bands instead.
Everything about 1.58 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
1.58 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 | 15.8 W | no standard part — needs a power resistor or a heatsink |
| 12 V | 91.1 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
22
at this value
Ten pieces
$0.26
not the reel price
Common packages
0805 · 0603 · 0402 · 2512
Codes you will mistake it for
One character apart from 1R58. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.