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Transistor base voltage/current?

Discussion in 'General Electronics Chat' started by hantto, Jan 8, 2003.

  1. hantto

    hantto Member

    Joined:
    Oct 25, 2002
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    Location:
    Finland
    Hi!
    I have downloades a couple datsheets to transistors that i have, and now i'm a bit confused. I want to know what is the MIN/MAX current/voltage the base can take so that the transistor starts to lead/doesn't break.

    Is it the Emitter-Base voltage? the Base-Emitter on voltage? Base Current? (in the datasheet)

    And what does "cutoff current" mean?

    Any help is welcome :)
     
  2. kinjalgp

    kinjalgp Active Member

    Joined:
    Oct 28, 2002
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    INDIA/USA
    To turn on a transitor the difference betwwen base and emitter voltage (Vbe_min) should be 0.7V for silicon transistor and 0.3V for germanium. Normally base current of transistor is of the order of uA, giving more base current will saturate the transistor and may lead to junction breakdown.
     

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