100k Ohm carbon film resistor is a popular resistor in electrical circuits. It can be available with three, four, five or six bands. These bands have different colors which are known as the color code. To know the resistance value of the resistor, we should know how to read the color code. The resistor color code for different colors is available in the post Resistor color code chart. In this post, I am going to explain how to read 100k ohm resistor color code with 3, 4, 5 and 6 bands.
3 bands 100k ohm resistor color code
A three-band 100k resistor has the first two digits 1 and 0 and the multiplier is 104. Then the color code for 3 bands 100k ohm resistor is 104M with the bands of colors Brown, Black and Yellow. M refers to 20% tolerance i.e. no fourth band.
| Band number | Color | Code |
| 1st band | Brown | 1 |
| 2nd band | Black | 0 |
| 3rd band | Yellow | 4 |
| No tolerance band | – | M |
So, the color coding of 100k ohm resistor with 3 bands is Brown, Black and Yellow (104M).
4 Bands 100k resistor color coding
If the tolerance is 5% then there will be the fourth band of golden color which is coded as J. First three bands will remain the same as that of three-band 100k resistor. Then the color code of 100k resistor with 4 bands will be 104J. The colors of the bands are Brown, Black, Yellow and Golden.
| Band number | Color | Code |
| 1st band | Brown | 1 |
| 2nd band | Black | 0 |
| 3rd band | Yellow | 4 |
| 4th Band | Golden (if tolerance is 5%) | J |
5 Bands 100k ohm resistor color code
A five band 100k resistor has the first three digits as 1, 0 and 0 respectively and the multiplier is 1000. If the tolerance of 10% then there will be a fifth band of color Silver. Then, the color code for 100k ohm resistor with 5 bands is 1003K with colors of bands as Brown, Black, Black, Orange and Silver.
| Band number | Color | Code |
| 1st band | Brown | 1 |
| 2nd band | Black | 0 |
| 3rd band | Black | 0 |
| 4th Band | Orange | 3 |
| 5th Band | Silver (if tolerance is 10%) | K |
Color coding of 100k resistor with 6 bands
If the temperature coefficient of the resistor is 0.5 then there will be a sixth band of color Green which is coded as 5. Other bands will remain the same as that of five-band 100k ohm resistor. So, the color code of 6 band 100k resistor will be 1003K5 with bands of colors Brown, Black, Black, Orange, Silver and Green.
| Band number | Color | Code |
| 1st band | Brown | 1 |
| 2nd band | Black | 0 |
| 3rd band | Black | 0 |
| 4th Band | Orange | 3 |
| 5th Band | Silver (if tolerance is 10%) | K |
| 6th Band | Green (if temperature coefficient is 0.5 ) | 5 |
This is all from this article. Hope you can identify 100k ohm resistor by reading it’s color code during your practical work with circuits. If you have any doubt on this topic you can ask me in the comment section.
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