68 Ohm Resistor Color Code: blue, grey, black, gold

68 ohm resistor color code

The color code for 68 Ω is blue, grey, black, gold on a 4-band resistor (±5%) and blue, grey, black, gold, brown on a 5-band resistor (±1%).

Color bands

4 bands, ±5%Blue, Grey, Black, Gold

5 bands, ±1%Blue, Grey, Black, Gold, Brown

6 bands, ±1%, 100 ppm/KBlue, Grey, Black, Gold, Brown, Brown

Tolerance	Band	Minimum	Maximum
±1%	Brown	67.32 Ω	68.68 Ω
±2%	Red	66.64 Ω	69.36 Ω
±5%	Gold	64.6 Ω	71.4 Ω
±10%	Silver	61.2 Ω	74.8 Ω

Voltage	Current	Power	Resistor rating
3.3 V	48.5 mA	160 mW	1/2 W
5 V	73.5 mA	368 mW	1 W
9 V	132 mA	1.19 W	3 W
12 V	176 mA	2.12 W	5 W
24 V	353 mA	8.47 W	over 10 W

Current through one LED in series with 68 Ω:

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

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

Same first two colors, different multiplier:

What are the colors of a 68 Ω resistor?

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

What is the SMD code for 68 Ω?

680 on 3-digit resistors and 68R0 on 4-digit (1%) resistors.

How much current flows through a 68 Ω resistor at 5 V?

73.5 mA, dissipating 368 mW. A 1 W resistor is enough.

Which resistors get mixed up with 68 Ω?

blue, grey, gold, gold is 6.8 Ω and blue, grey, brown, gold is 680 Ω: only the third band changes, so check it carefully.