Friday, May 25, 2018

Tools: Introducing for 4 Band Resistor Calculators

Eltronicschool. - The most popular component in electronic devices is resistor. There are many kinds of resistor provided in this time, one of them is 4 band resistor calculator. 

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In this season we will show you information about the introducing for 4 band resistor calculators.


A resistor is a perhaps the most common building block used in circuits. Resistors come in many shapes and sizes this tool is used to decode information for color banded axial lead resistors.

4 Band Description

The number of bands is important because the decoding changes based upon the number of color bands. There are three common types: 4 band, 5 band, and 6 band resistors. For the 4 band resistor:

Band 1 – First significant digit. 

Band 2 – Second significant digit 

Band 3 – Multiplier 

Band 4 – Tolerance

Resistance Value

The first 4 bands make up the resistance nominal value. The first 2 bands make up the significant digits where: 

black – 0 

brown – 1 

red – 2 

orange – 3 

yellow – 4 

green – 5 

blue – 6 

violet – 7 

grey – 8 

white – 9

The 3rd band or multiplier band is color coded as follows: 

black – x1 

brown – x10 

red – x100 

orange – x1K 

yellow – x10K 

green – x100K 

blue – x1M 

violet – x10M 

grey – x100M 

white – x1G 

gold – .1 

silver – .01

An example of a resistance value is:

band 1 = orange = 3, 

band 2 = yellow = 4, 

band 3 = blue = 1M

value = 34*1M = 34 Mohm

Resistance Tolerance

The fourth band is the tolerance and represents the worst case variation one might expect from the nominal value. The color code for tolerance is as follows: 

brown - 1% 

red - 2% 

orange - 3% 

yellow - 4% 

green - .5% 

blue - .25% 

violet - .1% 

gray - .05% 

gold - 5% 

silver - 10%

An example calculating the range of a resistor value is:

If the nominal value was 34 Ohm and the 4th band of the resistor was gold (5%) the value range would be nominal +/- 5% = 32.3 to 35.7


Thank you for your coming here in site, we hope the article above will help you to know more about your an electronic circuit design and software in this time, etc. Please comment here when you want to share and other. Thank you.


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