SMD code 12R7 — 12.7 Ω
A surface-mount resistor has no bands. This one is a four-digit marking: the R is the decimal point — 12.7 Ω. Parts marked this way are usually ±1% or tighter.
12R7
reads as
12.7 Ω
The same part, in bands
The through-hole version of 12.7 Ω carries 5 colour bands instead.
Everything about 12.7 Ω — power ratings, what ten cost, what is in stock.
Same value, other markings
12.7 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 | 1.97 W | 5 W |
| 12 V | 11.3 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
51
at this value
Common packages
1206 · 0805 · 0402 · 0603
Codes you will mistake it for
One character apart from 12R7. On a 0402 part these are a fraction of a millimetre of printing — worth a second look before you solder.