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high voltage, low current transistors?

Discussion in 'Electronic Components' started by Smitty Two, Sep 8, 2005.

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  1. Smitty Two

    Smitty Two Guest

    OK, so my boss asked me to source some transistors that operate in the
    100 volts plus, sub 100 micro amp range. Has he been drinking too much
    Pepsi, or do such things actually exist? (remove first h for email)
     
  2. MMBTA42 (SMT)
    MPSA42 (TO-92)

    Around a nickel US or less in moderate volume.


    Best regards,
    Spehro Pefhany
     
  3. The MPSA42 (NPN) and MPSA92 (PNP) are both capable of handling 300V and
    sub milliamp currents. They are available in quantities of 100 or so on
    Ebay.
     
  4. Unmount a CRT-screen/tv and look for the printcard mounted on the rear end
    of the CRT tube. On that card, you'll find three transistors that operates
    well for high voltage and low current.
     
  5. The threee transistors that drive the three colors are made to dissipate
    quite a bit of power, and are not low current. They have load resistors
    that are power resistors, and handle several watts.
     
  6. Smitty Two

    Smitty Two Guest

    "Watson A.Name - \"Watt Sun, the Dark Remover\""
    I'll go with the audience, Meredith. Forwarded the data sheets on the
    MPSA42/92 to the man upstairs and got them rubber-stamped. Thanks,
    audience!!! Watson and Spehro saved me a lot of work!
     
  7. "Watson A.Name - "Watt Sun, the Dark Remover"" <> skrev
    i melding
    ----
    quite a bit of power
    Correct
    I'm disagree. Read the specs for them. Mostly, they wont be able to draw
    more than 100 - 200 mA.
    watts.
    That is right. You are dealing with power transistors: High voltage an not
    so high current.
     
  8. redbelly

    redbelly Guest

    The OP is looking for around 0.1 mA or less.

    Mark
     
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