Transient Response of Variable Capacitance Diodes

A solution for the transient response of a reverse biased semiconductor diode to a step function (voltage) may be found by considering the junction essentially a voltage variable capacitance. The assumptions from which the analysis is made are given and found to be applicable in a wide variety of cases. Specific solutions are obtained for abrupt and linearly graded junctions, and experimental evidence is presented which is in good agreement with the derived equations.