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Identify Transistor (?)

Discussion in 'Electronic Components' started by Alan 'A.J.' Franzman, Feb 2, 2007.

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  1. I'm trying to identify what looks like a transistor in a TO-92 package,
    painted silver on the flat side and apparently marked:
    W 2n

    This doesn't seem to fit the JEDEC, JIS or Pro-Electron formats; am I out of


    Alan "A.J." Franzman

    Email: a.j.franzman [ A T ] verizon [ D O T ] net

  2. Eeyore

    Eeyore Guest

    It looks more like the format used for SMT devices actually.

    I suspect you'll need to make an informed 'guess' from circuit function what
    it's likely to be.

  3. Franc Zabkar

    Franc Zabkar Guest

    FWIW, suggests that it is a Philips part.

    - Franc Zabkar
  4. Eeyore

    Eeyore Guest

    Philips parts sometimes have that silver on them but invariably IME have ph too.

  5. legg

    legg Guest

    Philips OT380 is SOT54 SMD, not TO92 through-hole.

  6. legg

    legg Guest

    OY! SOT-54 IS a through-hole part.

    Sorry for the miss-info.

  7. Yes, and according to, it's the same as
    TO-92. Why do we need a new name for it? I'll stick with the old one, thank
    you very much!

    So, what /IS/ a Philips Oscar Tango Three Eight Zero anyway? I just noticed
    that the board legend for it begins with "D" as in "Diode" - is it perhaps a
    dual diode?

    I find some online suppliers claiming to stock it, but no info.


    Alan "A.J." Franzman

    Email: a.j.franzman [ A T ] verizon [ D O T ] net

  8. legg

    legg Guest

    I think you're back to the informed guess scenario, if Philips/NXP
    won't own up to at least a product listing.

    It was considered 'standard' enough to process paper for matte-tin
    pbf-free packages. As you say, brokers seem confident in being able to
    supply it.

    If this is a repair job, why not go through distribution?

    Philips made RF strip-line modules at one time, with the OM prefix.

    O is a designator generally avoided, to prevent confusion with zero.

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