# Resistor colour code

Discussion in 'General Electronics Discussion' started by remzy, Dec 10, 2016.

1. ### remzy

47
1
Jun 12, 2015
I've been dealing with fixing and making electronic projects for a few years now but my knowlege is still not perfect. I need help about this resistor. I just haven't ever seen this colour code on them before: Black, gold, silver, red and blue
Here is a picture.

Last edited by a moderator: Dec 10, 2016
2. ### Harald KappModeratorModerator

11,268
2,577
Nov 17, 2011
This may be an inductor, not a resistor.
Inductance 0.62µH

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3. ### hevans1944Hop - AC8NS

4,592
2,149
Jun 21, 2012
Or, if it really IS a resistor: 0.62 ohms. 62 is the two significant figures from blue and red bands, silver band means multiply significant figures by 0.01, gold band means 5% tolerance; ignore the black band.

If it IS an inductor, as Harald mentioned, 0.62 μH is a quite small value. You may not be able to distinguish this component from a low-valued resistor.

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4. ### remzy

47
1
Jun 12, 2015
I'm pretty sure it's a resistor because its marked as one on the pcb.

5. ### hevans1944Hop - AC8NS

4,592
2,149
Jun 21, 2012
0.62 ohms might be hard to measure with a multi-meter. You could connect it to a constant-current source and measure the voltage drop to verify the resistance. No constant current source handy? Just wire it in series with a 100 ohm resistor and connect the series pair to a constant voltage source of about five to ten volts. Measure the voltage drop across the "0.62 ohm resistor" and use the voltage divider equation to determine the resistance.

6. ### Harald KappModeratorModerator

11,268
2,577
Nov 17, 2011
An unmistakable sign.

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7. ### remzy

47
1
Jun 12, 2015
I would've done that but the resistor is blown from the other side. I've just took a picture of it where you can see the colours clearly. I didn't know about that method. Thank you!

8. ### davennModerator

13,798
1,939
Sep 5, 2009

you read the colour code back to front

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9. ### remzy

47
1
Jun 12, 2015
I've realised that later on. Thank you

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