Bipolar transistors

What is the typical collector-emitter voltage of a silicon bipolar transistor in the saturation region?

  1. AAbout 0.1–0.3 V
  2. BAbout 5 V
  3. CAbout 20 V
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Answer: A. About 0.1–0.3 V

In saturation, both junctions are forward-biased, and the collector-emitter voltage VCE(sat) is small, about 0.1–0.3 V. It is the voltage drop of the switch in the on state, and the smaller it is, the lower the switching loss.

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