Resistor color code
Resistor color code
Embedded Files
Resistors can have a different number of bands.
E.g. a 4-band resistor's 1st and 2nd band are numbers as per the chart.
3rd band = multiplier
4th band = tolerance
E.g. Suppose a resistor has the colours: Red, Black, Red, Gold
1st band = a number – in the chart, red is 2
2nd band = a number – in the chart, black is 0
3rd band = multiplier – in the chart, red is 102
4th band = tolerance – in the chart, gold is +/- 5%
The resistor's size is 20 x 102 = 2 kΩ +/- 5%
Check the other Resistor Color Code 4 Bands in:
Question
Question
What is the upper limit of a 3.3 kΩ +/- 5% resistor?
Answer:
find 5% of the nominal resistance: 3.3 kΩ x 0.05 = 0.165 kΩ.
Then add the nominal resistance: 3.3 kΩ + 0.165 kΩ = 3.465 kΩ.
Notes:
"+/- 5%" means the actual resistance can be within 5% above or below the nominal value, 3.3 kΩ.
Lower limit is calculated by subtracting 5% from the nominal value: 3.3 kΩ - 0.165 kΩ = 3.135 kΩ.
upper limit of a 3.3 kΩ +/- 5% resistor = 3.465 kΩ
Page updated
Google Sites
Report abuse