Q. The zener diode is heavily doped because__

A
to have low breakdown voltage
B
to have high breakdown voltage
C
to have high current variations
D
to maintain perfect quiescent point
Solution:

The value of reverse breakdown voltage at which zener breakdown occurs is controlled by amount of doping. If the amount of doping is high, the value of voltage at which breakdown occurs will decrease. Better doping gives a sooner breakdown voltage.

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