First slide

P-N junction diode

Question

Zener breakdown takes place if

Moderate

A

Doped impurity is low
B

Doped impurity is high
C

Less impurity in N-part
D

Less impurity in P-type

Solution

Zener breakdown can occur in heavily doped diodes. In lightly doped diodes the necessary voltage is higher, and avalanche multiplication is then the chief process involved.

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