330 Ω resistor colour code
Four bands: Orange · Orange · Brown · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
330 Ω
330 ohms
Real range at ±5%
313.5 Ω – 346.5 Ω
A gold band allows this much drift.
Series
E6
Held in almost every parts drawer.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | Orange | 1st digit — 3 |
| 2 | Orange | 2nd digit — 3 |
| 3 | Brown | Multiplier — ×10 |
| 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 | 10 mA | 33 mW | 1/8 W |
| 5 V | 15.2 mA | 75.8 mW | 1/4 W |
| 12 V | 36.4 mA | 436 mW | 1 W |
| 24 V | 72.7 mA | 1.75 W | 5 W |
What you can actually get
Parts made
209
26th most of 1,465 values
In stock
80,657
across 9 of them
Cheapest at 100
$0.001
each
Tolerances sold
±0.01% to ±10%
11 grades in all
Packages: 1206, 0603, 0805, 0402, 1210, 2512, 2010, 1020. Ratings: 30mW to 25W.
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
$0.10
$0.010 each · Cut Tape (CT) · minimum order 1
The reel price
$0.00185
each, but only from 100,000 pieces up
Sitting in stock
8,762,263
across 13 part numbers
Per piece, ten costs 5.4× the reel price. That gap is why a handful of resistors never costs what the headline price suggests.
Stocked in ±0.01% and ±1% and ±5%, rated 1/16 W to 2 W.
Cheapest part you can buy ten of: CR0603-JW-331ELF 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
Five bands
OrangeOrangeBlackBrownBrown
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 330 Ω — which is why measuring beats reading when it matters.
- 300 Ω285 Ω–315 Ω
- 316 Ω312.84 Ω–319.16 Ω
- 324 Ω320.76 Ω–327.24 Ω
- 332 Ω328.68 Ω–335.32 Ω
- 340 Ω336.6 Ω–343.4 Ω
- 348 Ω344.52 Ω–351.48 Ω
- 360 Ω342 Ω–378 Ω
If you do not have one
Standard values that land within 1% of 330 Ω when combined.