SMD code 4R22 — 4.22 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: the R is the decimal point — 4.22 Ω. Parts marked this way are usually ±1% or tighter.
4R22
reads as
4.22 Ω
The same part, in bands
The through-hole version of 4.22 Ω carries 5 colour bands instead.
Everything about 4.22 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
4.22 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 | 5.92 W | no standard part — needs a power resistor or a heatsink |
| 12 V | 34.1 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
27
at this value
Ten pieces
$1.49
not the reel price
Common packages
0603 · 1206 · 0805 · 0402
Codes you will mistake it for
One character apart from 4R22. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.