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-- 3 Band & 4 Band Resistor Value Finder --

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3 Band & 4 Band Resistor Value Finder

First Band Second Band Multiplier / Divider Band Tolerance Band


4 band resistor

Your Values Are :

Resistor Value =

Tolerance =

Minimum Resistance Value =

Maximum Resistance Value =

Note:

  • 1. For Tolerance the default is set to +/- 5% since this is most commonly used Tolerance level
  • 2. If there is only three Bands in the resistor then it is a 3 band resistor. So in order to calculate the resistance value just select the option of "Tolerance Band to = Select the color" & rest remains the same.

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What is a Resistor ?

A resistor is a passive two-terminal electrical component. In electronic circuits, resistors are used to protect other electrical components, reduce current flow, adjust signal levels, to divide voltages, among other uses. Resistors are common component of electrical networks and electronic circuits. Almost all the electrical circuits comprises of atleat one resistor in it. Resistors are also implemented within IC's.

4 Band Resistor

The 4 band color code is the most common variation & most widely used. These resistors have two bands for the resistance value (1st & 2nd Band), one multiplier (3rd Band) and one tolerance band (4th Band).
Note : Sometimes in some resistor the tolerance band would be left blank which is a 3 band resistor. This means that the resistance value remains the same, but the tolerance is fixed to 20%.

How to read a 4 Band Resistor value ?

  • 1. Most Common - The first three bands (i.e resistor value bands (1st & 2nd) & multiplier band (3rd)) will be close to each other. The last band will have a large gap between itself and the 3rd band as shown in the below image
  • 4 band resistor
  • 2. If the bands are equally spaced then the last band (Tolerance band) probably will be Gold or Silver

How to find resistor value using this tool ?

Finding Resistor value using Color Code

  • 1. Select the color of each band from the appropriate drop down list. For example lets take the below image
  • 4 band resistor
  • 2. 1st band is orange so select the option orange from "First Band" & do the same thing for the remaining bands
  • 3. Once everything is selected click on "Find the Value" to determine your resistor value

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Finding Resistor value using Values

1st Example

  • 1. Lets take a example of 560K Ohms
  • 2. First select 5 from the first band
  • 3. Next select the 6 from the second band
  • 4. Now to select the multiplier, consider the digits which are left out after the first two digit. In this case its one digit thats 0 & also the K so select the option 10K
  • 5. The tolerance will be Gold most of the times, if its not Gold select the appropriate options & click "Find the Value"

2nd Example

  • 1. Lets take a example of 56K Ohms
  • 2. First select 5 from the first band
  • 3. Next select the 6 from the second band
  • 4. Now to select the multiplier, consider the digits which are left out after the first two digit. In this case there is no digit left out but we have K so select the option 1K
  • 5. The tolerance will be Gold most of the times, if its not Gold select the appropriate options & click "Find the Value"

3rd Example

  • 1. Lets take a example of 5.6M Ohms
  • 2. First select 5 from the first band
  • 3. Next select the 6 from the second band
  • 4. Now to select the multiplier, consider the digits which are left out after the first two digit. In this case there is no digit left out but we have M & we also have a decimal point so select the option 100K
  • 5. The tolerance will be Gold most of the times, if its not Gold select the appropriate options & click "Find the Value"

4th Example

  • 1. Lets take a example of 56M Ohms
  • 2. First select 5 from the first band
  • 3. Next select the 6 from the second band
  • 4. Now to select the multiplier, consider the digits which are left out after the first two digit. In this case there is no digit left out but we have M & we also don't have a decimal point so select the option 1M
  • 5. The tolerance will be Gold most of the times, if its not Gold select the appropriate options & click "Find the Value"

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⌚ Tool Posted On : June 2017


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