10 Ω resistor colour code
Four bands: Brown · Black · Black · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
10 Ω
10 ohms
Real range at ±5%
9.5 Ω – 10.5 Ω
A gold band allows this much drift.
Series
E6
Held in almost every parts drawer.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | Brown | 1st digit — 1 |
| 2 | Black | 2nd digit — 0 |
| 3 | Black | Multiplier — ×1 |
| 4 | Gold | Tolerance — ±5% |
How much it can take
Current and dissipation across the resistor, and the package you need. The suggested rating keeps a factor of two in hand, which is what anyone building a board actually does.
| Across it | Current | Dissipated | Package to pick |
|---|---|---|---|
| 3.3 V | 330 mA | 1.09 W | 5 W |
| 5 V | 500 mA | 2.5 W | 5 W |
| 12 V | 1.2 A | 14.4 W | no standard part — needs a power resistor or a heatsink |
| 24 V | 2.4 A | 57.6 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
262
5th most of 1,465 values
In stock
471,804
across 20 of them
Cheapest at 100
$0.0005
each
Tolerances sold
±0.01% to ±20%
9 grades in all
Packages: 0603, 0805, 0402, 1206, 1210, 2512, TO-220, 1218. Ratings: 20mW to 100W.
What ten of them actually cost
The price everyone quotes is the reel price. If you want ten, you cannot buy the reel — and the real figure is usually several times higher per piece.
Ten pieces
$0.21
$0.021 each · Cut Tape (CT) · minimum order 1
The reel price
$0.00251
each, but only from 50,000 pieces up
Sitting in stock
8,163,873
across 3 part numbers
Per piece, ten costs 8.4× the reel price. That gap is why a handful of resistors never costs what the headline price suggests.
Stocked in ±1%, rated 1/16 W to 1/10 W.
Cheapest part you can buy ten of: RMCF0603FT10R0 by Stackpole Electronics Inc — see it at Digi-Key.
Assembly stock from the JLCPCB library, read 2026-09-24. Retail prices and stock from Digi-Key, read 2026-09-24. Prices move — check the product page before ordering. That is what a board house will place for you — not everything a distributor sells.
The same value, marked differently
Five bands
BrownBlackBlackBlackBrown
Three significant digits and a ±1% band.
Values that can overlap this one
At ±5% the tolerance bands of neighbouring values run into each other. A part sold as one of these could measure the same as a 10 Ω — which is why measuring beats reading when it matters.
- 9.1 Ω8.645 Ω–9.555 Ω
- 9.53 Ω9.4347 Ω–9.6253 Ω
- 9.76 Ω9.6624 Ω–9.8576 Ω
- 10.2 Ω10.098 Ω–10.302 Ω
- 10.5 Ω10.395 Ω–10.605 Ω
- 11 Ω10.45 Ω–11.55 Ω
If you do not have one
Standard values that land within 1% of 10 Ω when combined.