634 Ω resistor colour code
Five bands: Blue · Orange · Yellow · Black · 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
634 Ω
634 ohms
Real range at ±1%
627.66 Ω – 640.34 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 | Blue | 1st digit — 6 |
| 2 | Orange | 2nd digit — 3 |
| 3 | Yellow | 3rd digit — 4 |
| 4 | Black | Multiplier — ×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 | 5.21 mA | 17.2 mW | 1/8 W |
| 5 V | 7.89 mA | 39.4 mW | 1/8 W |
| 12 V | 18.9 mA | 227 mW | 1/2 W |
| 24 V | 37.9 mA | 909 mW | 2 W |
What you can actually get
Parts made
80
461st most of 1,465 values
In stock
0
across 0 of them
Cheapest at 100
$0.0054
each
Tolerances sold
±0.1% to ±1%
4 grades in all
Packages: 1206, 0402, 0603, 0805, 2512, 1210, 0201, 2010. Ratings: 30mW to 6W.
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
$0.00231
each, but only from 100,000 pieces up
Sitting in stock
2,926,785
across 2 part numbers
Per piece, ten costs 9.1× 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: RC0402FR-07634RL 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
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 634 Ω — which is why measuring beats reading when it matters.
If you do not have one
Standard values that land within 1% of 634 Ω when combined.