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Diffusion capacitance is larger than transition capacitance.(a) True(b) False(c) Both are same(d) Depends on doping concentrationsThis question was posed to me at a job interview.My enquiry is from Diffusion Capacitance in chapter Diode Circuit of Analog Circuits

Answer»

Right option is (B) False

For explanation I would say: Diffusion CAPACITANCE occurs in a forward BIASED DIODE, transition capacitance is EASY to see in reverse bias. CD > CT for a forward bias junction. In reverse bias though, CD may be neglected compared to CT.


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