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Saturation level of bjt

  1. Dec 21, 2012 #1
    Saturation current of bjt is a reference for us to adjust current of collector?
    If we want to operate in active mode, then we have to adjust the current of collector to under saturation level?

    Thank you
  2. jcsd
  3. Dec 21, 2012 #2


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    Staff: Mentor

    The Saturation current is the max current that the BJT can pass in saturation. That relates to the Vsat and power dissipation capability of the package.

    In the active region of operation, you are more limited in current, because you have a not-so-small voltage drop across the transistor, so the power dissipation is higher.

    Does that help? Can you expand on your question a bit with a practical example?
  4. Dec 21, 2012 #3
    I think this is what I want .
    Thank you.
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