What is ohm joules (ΩJ) unit used for?

Question

I found the following component but I don't know what it is. In particular, what does the ΩJ unit mean?

the J is likely a separate symbol, probably referring to tolerance. — Hearth, Feb 18 '22 at 14:36

score 21 · Answer 1 · edited Feb 18 '22 at 15:15

21

That's not J for joules. It's probably J for 5% tolerance. The component is just a 10 mΩ resistor with a 5 W rating.

edited Feb 18 '22 at 15:15

Transistor

answered Feb 18 '22 at 14:37

hobbs

3

Probably we have a dupe somewhere on the site for this kind of code, but I wasn't able to turn it up with a bit of searching. – hobbs Feb 18 '22 at 14:37
5

https://electronics.stackexchange.com/a/484095/47070 – JRE Feb 18 '22 at 14:40

Andy aka · Answer 2 · 2022-02-18T15:42:20.163

18

"J" means a resistor value tolerance of +/- 5% as per this site.

The resistor in question has a value of 10 milli-ohms (\$m\Omega\$).

It also applies to capacitors as per this wiki site: -

edited Feb 18 '22 at 15:42

answered Feb 18 '22 at 14:37

Andy aka

2 Answers2