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Identifying a cracked component

Discussion in 'Electronic Design' started by [email protected], Mar 10, 2007.

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  1. Guest

    Hi, tried this in s.e.r but didn't have much luck.

    Just wondering if anyone could take a shot at identifying this:


    http://i19.tinypic.com/2ljmaz5.jpg

    A couple of the legs are missing and the colour has been changed to
    try and highlight the numbers.

    It's a TO-92 (or very close) type package and came from a Q-Tec 650W
    Triple Fan 24P ATX PSU, item no 14348. The silkscreen has it
    identified as
    Q4, so maybe transistor or related? Both this and the internal fuse
    blew due to a short I accidentally created. All I can read is C. 44
    and 447. Maybe someone could
    take a guess at what I think is a manufacturers logo at the top?


    Many thanks
     
  2. Steve Sousa

    Steve Sousa Guest

    Have you checked the other transistors on the pcb? Usually, a designer
    uses the same type of component on the same board, so you maybe lucky
    and there is an identical one right there.

    Best Regards
    Steve Sousa
     
  3. Guest

    Thank you for the suggestion - I tried looking at the others, none
    matching unfortunately.
     
  4. Eeyore

    Eeyore Guest

    Can you establish which part of the circuitry it's associated with ?

    Graham
     
  5. ehsjr

    ehsjr Guest

    On real thin guesswork, maybe its a 2N5144.
    A 2N2222 is similar.

    Ed
     
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