Zener diode

Zener diode (also called Zener diode) is a kind of surface contact crystal diode made of silicon material, referred to as Zener tube. [1] This diode is a semiconductor device with high resistance until the critical reverse breakdown voltage. When the voltage stabilizer tube is reverse breakdown, the terminal voltage is almost constant within a certain current range (or within a certain power loss range), showing the voltage stabilizing characteristics, so it is widely used in the voltage stabilizer power supply and limiting circuit. The zener diode is divided according to the breakdown voltage. Because of this characteristic, the zener tube is mainly used as a voltage regulator or voltage reference element. Zener diodes can be connected in series for use at a higher voltage, and more stable voltage can be obtained by connecting them in series, which is called bi-directional zener.