270 Ω resistor colour code
Four bands: Red · Violet · Brown · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
270 Ω
270 ohms
Real range at ±5%
256.5 Ω – 283.5 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 | 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 | 12.2 mA | 40.3 mW | 1/8 W |
| 5 V | 18.5 mA | 92.6 mW | 1/4 W |
| 12 V | 44.4 mA | 533 mW | 2 W |
| 24 V | 88.9 mA | 2.13 W | 5 W |
What you can actually get
Parts made
198
36th most of 1,465 values
In stock
16,748
across 4 of them
Cheapest at 100
$0.0023
each
Tolerances sold
±0.01% to ±10%
11 grades in all
Packages: 0805, 0603, 1206, 0402, 1210, 2512, 0201, 2010. Ratings: 30mW to 25W.
Assembly stock from the JLCPCB library, read 2026-09-24. That is what a board house will place for you — not everything a distributor sells.
The same value, marked differently
Five bands
RedVioletBlackBlackBrown
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 270 Ω — which is why measuring beats reading when it matters.
- 255 Ω252.45 Ω–257.55 Ω
- 261 Ω258.39 Ω–263.61 Ω
- 267 Ω264.33 Ω–269.67 Ω
- 274 Ω271.26 Ω–276.74 Ω
- 280 Ω277.2 Ω–282.8 Ω
If you do not have one
Standard values that land within 1% of 270 Ω when combined.