2.7 Ω resistor colour code
Four bands: Red · Violet · Gold · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
2.7 Ω
2.7 ohms
Real range at ±5%
2.565 Ω – 2.835 Ω
A gold band allows this much drift.
Series
E12
Held in almost every parts drawer.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | Red | 1st digit — 2 |
| 2 | Violet | 2nd digit — 7 |
| 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 | 1.22 A | 4.03 W | no standard part — needs a power resistor or a heatsink |
| 5 V | 1.85 A | 9.26 W | no standard part — needs a power resistor or a heatsink |
| 12 V | 4.44 A | 53.3 W | no standard part — needs a power resistor or a heatsink |
| 24 V | 8.89 A | 213 W | no standard part — needs a power resistor or a heatsink |
What you can actually get
Parts made
122
134th most of 1,465 values
In stock
6,694
across 4 of them
Cheapest at 100
$0.0025
each
Tolerances sold
±0.1% to ±10%
5 grades in all
Packages: 1206, 0805, 0402, 0603, 1210, 0207, 2010, 2512. Ratings: 50mW 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
$0.40
$0.040 each · Cut Tape (CT) · minimum order 1
The reel price
$0.0065
each, but only from 50,000 pieces up
Sitting in stock
213,952
across 1 part numbers
Per piece, ten costs 6.2× the reel price. That gap is why a handful of resistors never costs what the headline price suggests.
Stocked in ±1%, rated 1/8 W.
Cheapest part you can buy ten of: CRCW06032R70FKEA by Vishay Dale — 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
RedVioletBlackGoldBrown
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 2.7 Ω — which is why measuring beats reading when it matters.
- 2.55 Ω2.5245 Ω–2.5755 Ω
- 2.61 Ω2.5839 Ω–2.6361 Ω
- 2.67 Ω2.6433 Ω–2.6967 Ω
- 2.74 Ω2.7126 Ω–2.7674 Ω
- 2.8 Ω2.772 Ω–2.828 Ω
If you do not have one
Standard values that land within 1% of 2.7 Ω when combined.