Question

Transition capacitance is also called as _______

(a) diffusion capacitance

(b) depletion capacitance

(c) conductance capacitance

(d) resistive capacitance

I have been asked this question during an online interview.

This intriguing question originated from Diode Capacitances topic in division Semiconductor-Diode Characteristics of Electronic Devices & Circuits

Answer 1

Correct answer is (b) depletion capacitance

Easiest explanation: Transition capacitance occurs in reverse bias. We obtain a depletion layer in that case. Hence it’s also called as depletion capacitance. The diffusion capacitance occurs in forward bias.