Question

Consider the following statements A and B and identify the correct answer:
A) germanium is preferred over silicon in the construction of Zener diode.
B) germanium has high thermal stability than silicon in the construction of Zener diode.

A

Both (A) and (B) are true.

B

Both (A) and (B) are false.

C

(A) is true but (B) is false.

D

(A) is false but (B) is true.

Medium
Updated on : 2022-09-05
Solution
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Correct option is B)

Germanium diode does not have a sharp breakdown in reverse bias and hence, the voltage does not remain constant at after breakdown while silicon diode is better in this respect. Hence, silicon is preferred in Zener diode. Also, thermal stability of silicon is better than germanium.

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