Electrolytic Capacitor polarity

Thread Starter

hovik

Joined Sep 21, 2009
16
I'm building a circuit, but my electrolytic capacitors are not marked with a plus and minus, but a 0. Is the leg marked with 0 the negative one? Just want to be sure so I don't blow up anything. Who knows, maybe there is some capacitor convention I don't know about.

Thanks!
 

beenthere

Joined Apr 20, 2004
15,819
If it a conventional electrolytic, the negative lead is always marked, usually by a stripe with "-" marks on the case label.

A dipped epoxy tantalum capacitor always has the positive lead marked. I'm not so sure about wet slug tantalums.

Maybe you can post a picture of the cap in question, or give the manufacturer's number?
 
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