Electrolytic Capacitor polarity

Discussion in 'General Electronics Chat' started by hovik, Feb 24, 2010.

  1. hovik

    Thread Starter Member

    Sep 21, 2009
    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.

  2. beenthere

    Retired Moderator

    Apr 20, 2004
    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?