VCE sat for BJT

  • Thread starter jinyong
  • Start date
  • #1
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Main Question or Discussion Point

Why is there a VCE sat for BJTs? Where does it come from?
Can someone explain physically?
 

Answers and Replies

  • #2
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Just skimming the surface, the BJT is in saturation when both junctions are forward biased. When that happens, the voltage across the collector with respect to the emitter is very small (~0V). In practice VCE(SAT)~= 0.2 V. Refer to any fine electronics text book (Sedra & Smith, Gray and Meyer, etc) for more information
 
  • #3
es1
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Last edited:
  • #4
mathematically, when Vce is trying to be a negative voltage it will actually appear as Vce(sat)

don't quote me on it
 

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