300 Ω resistor colour code
Four bands: Orange · Black · Brown · Gold. The first two give the digits, the third multiplies, the fourth states how far off the real part may be.
Nominal
300 Ω
300 ohms
Real range at ±5%
285 Ω – 315 Ω
A gold band allows this much drift.
Series
E24
E24 only — stocked less often.
Band by band
| Band | Colour | Meaning |
|---|---|---|
| 1 | Orange | 1st digit — 3 |
| 2 | Black | 2nd digit — 0 |
| 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 | 11 mA | 36.3 mW | 1/8 W |
| 5 V | 16.7 mA | 83.3 mW | 1/4 W |
| 12 V | 40 mA | 480 mW | 1 W |
| 24 V | 80 mA | 1.92 W | 5 W |
What you can actually get
Parts made
177
83rd most of 1,465 values
In stock
13,059
across 9 of them
Cheapest at 100
$0.0032
each
Tolerances sold
±0.01% to ±10%
10 grades in all
Packages: 0805, 1206, 0603, 0402, 1210, 2512, 2010, 0612. Ratings: 30mW to 10W.
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
OrangeBlackBlackBlackBrown
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 300 Ω — which is why measuring beats reading when it matters.
- 287 Ω284.13 Ω–289.87 Ω
- 294 Ω291.06 Ω–296.94 Ω
- 301 Ω297.99 Ω–304.01 Ω
- 309 Ω305.91 Ω–312.09 Ω
- 316 Ω312.84 Ω–319.16 Ω
- 330 Ω313.5 Ω–346.5 Ω
If you do not have one
Standard values that land within 1% of 300 Ω when combined.