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HPQSCH1691 Zener diode info?

Discussion in 'Electronic Components' started by N Cook, May 16, 2007.

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  1. N Cook

    N Cook Guest

    0.4W zener but what voltage?
     
  2. N Cook

    N Cook Guest

    probably a Schottky, not a zener, 70V reverse, 1mA
     
  3. Franc Zabkar

    Franc Zabkar Guest

    I can't help, but FWIW, the Internet has references to "QSCH" devices
    made by HP.

    HP also has a lot of diode parts of the type HSCH-xxxx or HSCHxxxx.

    The "SCH" in the part number seems to suggest a Schottky diode.

    - Franc Zabkar
     
  4. N Cook

    N Cook Guest

    I looked on hp.com but because of an extension to Moore's law or something,
    HP being a computer company, Firefox does not work with the hp.com search
    box. So using quasi-advanced Google search
    "qsch site:hp.com"
    turned up nothing.
    The schematic showed a zener symbol, but I later found the relevant parts
    list page, and so reason for .35V diode-test diode drop. I'd never come
    across 1N4148 type packaged schottkys before.
     

  5. It doesn't work, because there is nothing to find.


    HP spun off their semiconductor division years ago, when they did the
    same to their test equipment division:


    1999

    HP's board of directors announces its decision to spin off a new company
    from the existing HP organization. Agilent Technologies consists of HP's
    former measurement, components, chemical analysis and medical
    businesses. HP retains its computing, printing and imaging businesses.
    Agilent has its initial public offering of common stock on November 18,
    1999. HP retains 84.1 percent of common stock. It is Silicon Valley's
    largest-ever IPO.


    In 2005 they changed the semiconductor company name to Avago.
    http://www.avagotech.com/


    --
    Service to my country? Been there, Done that, and I've got my DD214 to
    prove it.
    Member of DAV #85.

    Michael A. Terrell
    Central Florida
     
  6. clifto

    clifto Guest

    And it *still* sounds like the villain in a Bond movie.
     
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