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Modern germanium diodes and transistors?

Discussion in 'Electronic Components' started by Mark Aitchison, Mar 15, 2007.

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  1. Does anyone make germanium diodes or germanium transistors now? I think
    I heard of some expensive modern germanium high frequency devices (but
    I'm not sure if that was simply "a few decades old" instead of "many
    decades old". There are some advantages with germanium in some
    situations, but all the germanium diodes (for instance) I know of are
    "new Old Stock" (or "Old Old Stock"!) and not particularly good in many
    respects partially because of factors I guess germanium will always
    have, but probably largely because the production techniques have
    generally improved since then.

    If somebody made germanium diodes or transistors today, could they be
    much better, closer tolerance, less noisey, etc than before? Are
    germanium transistors getting a bum rap simply because they used
    techniques that also gave poor silicon transistors back then?

    Mark A
     
  2. Joerg

    Joerg Guest

    Says their 1N34 Ge Diodes are new but I don't know this company:
    http://www.web-tronics.com/1n34.html

    Then there is:
    http://www.circuitspecialists.com/products/pdf/1n34a.pdf

    AFAICT this diode didn't show up on Semtech's parts portfolio so I am
    not sure whether they still make them.
     
  3. Whatever happened to "Oliver Germanium" and his company?

    JIm
     
  4. A remnant of the company still exists, but only makes optoelectronics:

    http://www.gpd-ir.com/products.htm
     
  5. Joerg

    Joerg Guest


    It surprised me that there wasn't a Russian company that took over at
    least the production of Ge diodes. I could imagine that there would be
    sufficient market size for a small enterprise to thrive on that. After
    all, Svetlana has done just that for tubes.
     
  6. Joerg

    Joerg Guest

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