As one of the most basic components in electronic circuits, a resistor exerts a certain hindrance to the flow of electric current. But do you know how to read carbon film resistor color code?

These colorful bands actually indicate the resistor's resistance value - a detail that can be confusing for many beginners. However, with WEET guidance, you'll surely learn to identify the resistance value quickly.

First, carbon film resistor is generally classified into 4-band resistors and 5-band resistors based on the number of color bands.

Start by memorizing this mnemonic: 

Brown=1, Red=2, Orange=3, Yellow=4, Green=5, Blue=6, Violet=7, Gray=8, White=9, Black=0. 

Resistance value: 

Gold=±5%, Silver=±10%.

Take the CF Series 4-band resistors in the figure below as an example:

• 1st digit: Yellow=4

• 2nd digit: Red=2

• Multiplier: 2×100

• Tolerance: ±5%

So, the resistance value of this resistor is 4K2 Ω.

After this explanation, you must have a general understanding. Feel free to contact WEET if you need carbon film resistor!

More information:WEET CF Series Carbon Film Resistor-Axial Resistors-WEET Resistors | China MF CF MOX KNP Resistors Factory-

Contact us:Sales@weetcap.com

WEE Technology Published on Nov 14, 2025