Question

advantage of pn juncation diode

Answer 1

A junction diode is very useful serving as a rectifier, a switch, or a voltage reference, in an electronic circuit. Switch/rfectifier: the diode acts like a wire when the applied forward bias is above 0.6 V and like an insulator when the bias is reverse but less than the breakdown voltage. The diodes are ubiquitous in the ESD-protect circuit of an input of an electronic circuit.