Bipolar transistors

Which set correctly names the three terminals of a bipolar transistor?

  1. AEmitter, base, collector
  2. BAnode, cathode, gate
  3. CSource, gate, drain
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Answer: A. Emitter, base, collector

The terminals of a bipolar transistor are the emitter, which injects carriers; the base, which controls the current; and the collector, which collects carriers. Source, gate and drain are MOSFET (field-effect transistor) terminals, and anode, cathode and gate are thyristor terminals.

  • A. Correct. Emitter, base and collector.
  • B. Anode, cathode and gate are thyristor terminals.
  • C. Source, gate and drain are MOSFET terminals.
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More Bipolar transistors questions

  1. In the circuit symbol of an NPN transistor, which way does the arrow on the emitter point?
  2. Which correctly relates the emitter current IE, base current IB and collector current IC of a bipolar transistor?
  3. A transistor with DC current gain hFE = 100 has a base current of 10 μA. Roughly what is the collector current in the active region?
  4. What is the state of the junctions when a bipolar transistor is in the cutoff region (off)?
  5. What is the typical base-emitter voltage VBE of a silicon bipolar transistor operating in the active region?