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enter image description here

I have a difficulty in identifying a five band resistor. Color sequence is red, orange, black, gold, and black. It doesn't fit in to normal rules.

Depending on the location of its use I expect that to be around 20 ohms. But I want to know if it is any how special as in low tolerance, or temperature etc.

JRE
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user224016
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1 Answers1

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That is likely a wire-wound power resistor with half the windings in the opposite direction so it is non-inductive. That is what that final black band means.

enter image description here

Making it a 23Ω Non-inductive resistor.

evildemonic
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    Thanks for teaching me something new today! But, could you please provide a link or citation for the graphic that you used. – Elliot Alderson Jun 10 '19 at 18:34
  • @ElliotAlderson I am pretty sure I got that image from Yageo, but I am having a hard time finding a link to it now. I see these a lot in low-value 2 W - 5 W power resistors. You can often see the windings just under the ceramic coating going both ways. I will keep looking for a reference and post what I find. – evildemonic Jun 10 '19 at 19:32
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    Nice find, but for a 5% resistor a 23 ohm value is weird. I'd bet that it is a 22 ohm resistor and the 2nd band color has been altered by heat and was originally red (the photo is not great and it seems the resistor is somewhat damaged). – LorenzoDonati4Ukraine-OnStrike Jun 11 '19 at 12:34
  • @LorenzoDonati Good point...I don't think I've ever seen a 23Ω resistor! – evildemonic Jun 11 '19 at 14:31
  • Careful: last BLK band may also mean TemperatureCoefficient=250PPM – quetzalcoatl Mar 09 '21 at 12:46