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Cross for BUZ 103?

Discussion in 'General Electronics' started by unitron, Jul 5, 2003.

  1. unitron

    unitron Guest

    Need to replace a BUZ 103 on a motherboard. Haven't found any specs
    on it anywhere or anyone selling them. Anybody know of a cross for
    it?
     
  2. Robert Baer

    Robert Baer Guest

    Not listed in the NTE crossref #9 or any of my other crossref back to
    RCA SK series (1989).
    Go by size for power replacement purposes, and Ass-U-Me it is
    SandPower (silicon) and not FlowerPower (geranium - errrr - germanium);
    measure voltages and do some circuit tracing to get goo guess on NPN or
    PNP.
    Pick any convenient similar transistor and toss it in; works for me
    every time.

    Since you say it is on a motherboard, i am going to guess you mean a
    personal computer MB; and that leads me to suspect a TO-220 outline;
    then a NPN power transstor.
     
  3. unitron

    unitron Guest

    However since it's probably part of an on-board switching voltage
    regulator it might be some sort of FET instead of a bipolar, but,
    lacking an electron microscope or the knowledge to use it if I did
    have one, I have no way of knowing without finding some specs or a
    cross.
    It is a TO-220. Had a scar for several months from accidentally
    touching the heat sink to which it was bolted.
     
  4. Robert Baer

    Robert Baer Guest

    There was a serious (design?) problem if it was *that* hot...no wonder
    it failed.
    With that history, i would toss the MB and get a new (better design?)
    one.
     
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