What is breakdown in pn junction diode

The zener diode is mainly designed to operate in reverse biased conditions.A pn junction diode allows current to pass only in one direction which is a forward direction.At this breakdown voltage , the crystal structure breaks down.There are three types of junction diodes, as shown in the following figure.The breakdown voltage of a zener diode is very low.

Since then, it is developed into what we are using now.The first one is zener breakdown and the other one is an avalanche breakdown.A reverse current effect on a pn junction diode by damaging its junctions.What is a pn junction diode?The two phenomena are like natural occurrence and generally we all know that the insulator is under normal.

After this voltage has surpassed the breakdown point (in reverse bias), the diode falls in the zener region, where it conducts without getting damaged.A diode is constructed with a pn junction, and each terminal is connected to one side of the pn junction.Zener diode is a special kind of diode that allows current to flow in the forward direction in the same manner as an ideal diode, but also permit it to flow in the reverse direction.Zener breakdown does not result in damage of diode.In case pn junction diode, the breakdown voltage is high.