Comparison of switching diodes and Zener diodes

The switching speed of the switching diode is high, that is, the application frequency is high. Switching diodes have good high-frequency performance and are mainly used in switching circuits as electronic switches.

Switching diodes have good high-frequency performance and are mainly used in switching circuits as electronic switches, while rectifiers generally have poor high-frequency performance (the rectifiers in switching power supplies are also very high-frequency), and are mainly used to rectify power frequency current . It usually works in a high voltage and high current state.

Zener diode is a semiconductor device that has a very high resistance until the critical reverse breakdown voltage. At this critical breakdown point, the reverse resistance is reduced to a very small value. In this low resistance region, the current increases while the voltage remains constant. Zener diodes are divided according to the breakdown voltage because of this characteristic , Zener tubes are mainly used as voltage regulator devices or voltage reference components.

The characteristic of the Zener diode is that the voltage at both ends remains basically unchanged before the reverse energization has not broken down. In this way, when the voltage regulator tube is connected to the circuit, if the voltage of each point in the circuit fluctuates due to fluctuations in the power supply voltage or other reasons, the voltage at both ends of the load will basically remain unchanged.

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