49.9 Ω resistor colour code
Five bands: Yellow · White · White · Gold · Brown. The first three give the digits — a precision value needs all three — then the multiplier, then how far off the real part may be.
Nominal
49.9 Ω
49.9 ohms
Real range at ±1%
49.401 Ω – 50.399 Ω
A brown band allows this much drift.
Series
E96
A 1% precision value. Five bands, not four.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | Yellow | 1st digit — 4 |
| 2 | White | 2nd digit — 9 |
| 3 | White | 3rd digit — 9 |
| 4 | Gold | Multiplier — ×0.1 |
| 5 | Brown | Tolerance — ±1% |
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 | 66.1 mA | 218 mW | 1/2 W |
| 5 V | 100 mA | 501 mW | 2 W |
| 12 V | 240 mA | 2.89 W | no standard part — needs a power resistor or a heatsink |
| 24 V | 481 mA | 11.5 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
101
203rd most of 1,465 values
In stock
41,224
across 7 of them
Cheapest at 100
$0.0009
each
Tolerances sold
±0.01% to ±5%
7 grades in all
Packages: 0603, 0805, 1206, 0402, 2512, 1210, 0201, 2010. Ratings: 30mW to 5W.
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
$0.15
$0.015 each · Cut Tape (CT) · minimum order 1
The reel price
$0.00134
each, but only from 100,000 pieces up
Sitting in stock
12,000,686
across 28 part numbers
Per piece, ten costs 11.2× the reel price. That gap is why a handful of resistors never costs what the headline price suggests.
Stocked in ±0.01% and ±0.1% and ±0.5% and ±1%, rated 1/20 W to 0.13 W.
Cheapest part you can buy ten of: CR0402-FX-49R9GLF by Bourns 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
Values that can overlap this one
At ±1% the tolerance bands of neighbouring values run into each other. A part sold as one of these could measure the same as a 49.9 Ω — which is why measuring beats reading when it matters.
If you do not have one
Standard values that land within 1% of 49.9 Ω when combined.