9.1 Ω resistor colour code
Four bands: White · Brown · Gold · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
9.1 Ω
9.1 ohms
Real range at ±5%
8.645 Ω – 9.555 Ω
A gold band allows this much drift.
Series
E24
E24 only — stocked less often.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | White | 1st digit — 9 |
| 2 | Brown | 2nd digit — 1 |
| 3 | Gold | Multiplier — ×0.1 |
| 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 | 363 mA | 1.2 W | 5 W |
| 5 V | 549 mA | 2.75 W | no standard part — needs a power resistor or a heatsink |
| 12 V | 1.32 A | 15.8 W | no standard part — needs a power resistor or a heatsink |
| 24 V | 2.64 A | 63.3 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
115
147th most of 1,465 values
In stock
0
across 0 of them
Cheapest at 100
$0.0057
each
Tolerances sold
±0.1% to ±5%
5 grades in all
Packages: 0805, 1206, 0603, 0402, 2512, 1210, 0204, 1020. Ratings: 30mW to 3W.
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
$0.26
$0.026 each · Cut Tape (CT) · minimum order 1
The reel price
$0.00318
each, but only from 100,000 pieces up
Sitting in stock
100,894
across 2 part numbers
Per piece, ten costs 8.2× 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.
Cheapest part you can buy ten of: RC0402FR-079R1L by YAGEO — 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
WhiteBrownBlackSilverBrown
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 9.1 Ω — which is why measuring beats reading when it matters.
- 8.66 Ω8.5734 Ω–8.7466 Ω
- 8.87 Ω8.7813 Ω–8.9587 Ω
- 9.09 Ω8.9991 Ω–9.1809 Ω
- 9.31 Ω9.2169 Ω–9.4031 Ω
- 9.53 Ω9.4347 Ω–9.6253 Ω
- 10 Ω9.5 Ω–10.5 Ω
If you do not have one
Standard values that land within 1% of 9.1 Ω when combined.