33 ohm resistor color code

The color code for 33 Ω is orange, orange, black, gold on a 4-band resistor (±5%) and orange, orange, black, gold, brown on a 5-band resistor (±1%).

Color bands

4 bands, ±5%Orange, Orange, Black, Gold

5 bands, ±1%Orange, Orange, Black, Gold, Brown

6 bands, ±1%, 100 ppm/KOrange, Orange, Black, Gold, Brown, Brown

Open 33 Ω in the color code calculator →

Actual value by tolerance

Tolerance	Band	Minimum	Maximum
±1%	Brown	32.67 Ω	33.33 Ω
±2%	Red	32.34 Ω	33.66 Ω
±5%	Gold	31.35 Ω	34.65 Ω
±10%	Silver	29.7 Ω	36.3 Ω

SMD and printed codes

SMD, 3 digits	`330`
SMD, 4 digits	`33R0`
SMD, EIA-96	not used for this value
Letter code (IEC 60062)	`33R`

Current and power at common voltages

Voltage	Current	Power	Resistor rating
3.3 V	100 mA	330 mW	1 W
5 V	152 mA	758 mW	2 W
9 V	273 mA	2.45 W	5 W
12 V	364 mA	4.36 W	10 W
24 V	727 mA	17.5 W	over 10 W

As an LED resistor

Current through one LED in series with 33 Ω:

Supply	Red LED (2.0 V)	White or blue LED (3.2 V)
3.3 V	39.4 mA	3.03 mA
5 V	90.9 mA	54.5 mA
12 V	303 mA	267 mA

Above 20 mA: too much for a common 5 mm LED.

LED Resistor Calculator →

Standard series

33 Ω is a standard value in the E6, E12, E24 series, so it comes in almost every resistor kit.

Nearby values

← 27 Ω 39 Ω →

Same first two colors, different multiplier:

3.3 Ω 330 Ω 3.3 kΩ 33 kΩ 330 kΩ 3.3 MΩ

Frequently asked questions

What are the colors of a 33 Ω resistor?

On a 4-band resistor: orange, orange, black, gold. On a 5-band resistor: orange, orange, black, gold, brown.

What is the SMD code for 33 Ω?

330 on 3-digit resistors and 33R0 on 4-digit (1%) resistors.

How much current flows through a 33 Ω resistor at 5 V?

152 mA, dissipating 758 mW. A 2 W resistor is enough.

Which resistors get mixed up with 33 Ω?

orange, orange, gold, gold is 3.3 Ω and orange, orange, brown, gold is 330 Ω: only the third band changes, so check it carefully.