91 Ω resistor colour code
Four bands: White · Brown · Black · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
91 Ω
91 ohms
Real range at ±5%
86.45 Ω – 95.55 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 | 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 | 36.3 mA | 120 mW | 1/4 W |
| 5 V | 54.9 mA | 275 mW | 1 W |
| 12 V | 132 mA | 1.58 W | 5 W |
| 24 V | 264 mA | 6.33 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
179
78th most of 1,465 values
In stock
42,291
across 1 of them
Cheapest at 100
$0.0061
each
Tolerances sold
±0.01% to ±5%
7 grades in all
Packages: 1206, 0805, 0603, 0402, 1210, 2512, 2010, 0201. Ratings: 30mW to 10W.
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
$0.19
$0.019 each · Cut Tape (CT) · minimum order 1
The reel price
$0.00196
each, but only from 100,000 pieces up
Sitting in stock
1,647,942
across 21 part numbers
Per piece, ten costs 9.7× the reel price. That gap is why a handful of resistors never costs what the headline price suggests.
Stocked in ±0.1% and ±1% and ±5%, rated 1/20 W to 3 W.
Cheapest part you can buy ten of: RC0402JR-0791RL 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
WhiteBrownBlackBlackBrown
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 91 Ω — which is why measuring beats reading when it matters.
- 86.6 Ω85.734 Ω–87.466 Ω
- 88.7 Ω87.813 Ω–89.587 Ω
- 90.9 Ω89.991 Ω–91.809 Ω
- 93.1 Ω92.169 Ω–94.031 Ω
- 95.3 Ω94.347 Ω–96.253 Ω
- 100 Ω95 Ω–105 Ω
If you do not have one
Standard values that land within 1% of 91 Ω when combined.