330 ohm Resistor color code- 330R bands
The 330 ohm Resistor color code for 4-band resistor is as shown in the image below:
[Orange, orange, brown, gold]
| Band | Color | Value |
|---|---|---|
| 1st Orange |  | 3 |
| 2nd Orange | | 3 |
| 3rd Brown |  | 10 |
| 4th gold |  | +-5% |
| 1st digit 3 2nd digit 3 3rd multiplier: 10 | 330 Ohm tolerance: +-5% |
330 ohm resistor color code for 4-band is calculated as:
- (1st digit) = Orange = 3
- (2nd digit) = Orange = 3
- (multiplier) = Brown = 1 = 10^1 = 10
- (tolerance) = Gold= ±5%
∴ 33×10±5% –> 330 ohms –> 330 Ω
∴ the real value of 330 Ω resistor is between 313.5 Ω to 346.5 Ω
Description: From the resistor color code table we found the color code of resistor with respect to its decimal value of the respective bands counted from left to right.
Thus, for 330-ohm resistor, 1st digit is ‘ 3 ‘, ∴ look for color in a chart with value 3, then it’s your 1st color(say orange).
The next 2nd digit is ‘ 3 ‘, ∴ look for color in a chart with value 3, then it’s your 2nd color (say orange). Next 3rd digit ‘0’ (but value 10^1 = 10) is multiplier ‘ 1 ‘, ∴ look for color in a chart with value 1, then it’s your 3rd color band (say brown).
- The last bands in 4 or 5-bands resistors are the indicator of the tolerance value of the resistor. Here, it is Gold that indicates a 5% tolerance value. For Silver, its values counts 10%, and Brown it is value at 1% tolerance. If the 4th band is absent it is taken as 20% tolerance value.
- read what is an load resistor
