Compare P-N junction and Zener Diode.
P-N junction
|
Zener Diode
|
It conducts in only in one direction.
|
It conducts in both the directions.
|
It is always operated in forward bias condition.
|
It is always operated in reverse bias condition.
|
It has no sharp reverse breakdown
|
It has quite sharp reverse breakdown
|
It burns immediately, if applied voltage exceeds the breakdown voltage.
|
It does not burn, but functions properly in breakdown region.
|
It is commonly used for rectification purpose.
|
It cannot be used for rectification, but commonly used for voltage regulation
|
|
|