The Zener diode is almost used in all electrical tools and is a key element of any device circuit.But the design of the Zener diode is similar in that it can be easily operated on a broken site without interruption.The Zener diode can operate in a broken area but a normal diode cannot receive damage in this region.A distortional variation such as a Zener diode also occurs on a normal diode but a curve in the event of a split diode is not as good on a normal diode as on the Zener diode. The doping rate of the Zener diode PN junction is greater than the normal diode.