1 Ohm Resistor color code- 4 band and 5 band
1 ohm resistor color code can be found using the resistor color code chart, below image showing a resistor color code of 1Ω 4-band resistor:
[Brown, Black, Gold, Gold (any) ]
The color code in tabular form for the 1R four-band resistor is brown, black, gold, gold.
| Band | Color | Value |
|---|---|---|
| 1st Brown |  | 1 |
| 2nd Black |  | 0 |
| 3rd gold |  | 0.1 |
| 4th gold | | +-5% |
| 1st digit 1 2nd digit 0 3rd multiplier: 0.1 | 1 Ohm tolerance: +-5% |
4-band 100 ohm resistor color code is calculated as:
- 1st-band= Brown= 1 (1st digit)
- 2nd-band= Black= 0 (2nd digit)
- 3rd-band= Brown= 0.1 (multiplier) = 0.1
- 4th-band= Gold= ±5% (tolerance) – {4th band can be of any color as it indicates tolerence value}
Thus, 10×0.1±5% –> 1 ohm –> 1 Ω
The tolerance will be –> 5% of 1 –>0.05 Ω
Theoretically, the value of 1 Ω resistor is between 0.95 Ω to 1.05 Ω
Description: From the chart we got the color code of resistor with respect to the decimal value of the respective band counted from left to right.
So for 1-ohm resistor, 1st digit is ‘ 1 ‘, ∴ look for colour in chart having value 1, then it’s 1st color will be brown. The next 2nd digit is ‘ 0 ‘, ∴ look for color in chart having value 0, then it’s your 2nd color will be black. Next 3rd one is multiplier 0.1 ∴ look for color in chart having value 0.1, then it’s your 3rd color will be gold.
- The last band in 4 and 5-bands resistors is the markings for tolerance value in the resistor. In this case, it is Gold which indicates a 5% tolerance value. For Silver, it is 10%, Black indicates 1% and 2% tolerance is indicated by Brown. If the 4th band is absent it should be considered as 20% tolerance.
Image showing 1 ohm resistor color code of 5-band resistor:
[Brown, Black, Black, Silver, Black]
The 100R 5-band resistor color code is brown, black, black, silver, black and it is found as:
- 1st-band = Brown= 1 (1st-digit)
- 2nd-band = Black= 0 (2nd-digit)
- 3rd-band = Black = 0 (3rd-digit)
- 4th-band = Silver = 0.01 (multiplier) = 0.01
- 5th-band = Black= ±1% (tolerance)
Description:
So for 1-ohm 5-band resistor which comes under precision resistor,
The 1st digit is ‘ 1 ‘, ∴ look for color in table having value 1, then it’s your 1st color- brown.
Next 2nd digit is ‘ 0 ‘, ∴ look for color in chart having value 0, then it is 2nd band color- black.
Its 3rd digit is ‘ 0 ‘, ∴ look for color in chart having value 0, then it is 3rd band color- black.
Now, 4th digit is multiplier that should be (0.01), therefore, 4th band will be of silver color.
Characteristics will be the same from the value to the power rating of 5-band resistor and 4-band resistance except the bands color and some times the tolerance value.
Click here! to Brush-up resistors color code table and method to find their value.
