Zener diode and fast recovery diode

Zener diode and fast recovery diode

Zener diode, also known as Zener diode or reverse breakdown diodes, are devices that exhibit voltage stabilizing performance through the reverse breakdown characteristics of PN junctions. They play a stabilizing role in circuits. It stabilizes the voltage by utilizing the characteristic that the reverse voltage does not change with the reverse current within a certain range of reverse current after reverse breakdown of the diode.

diode

Generally made of silicon semiconductor materials through alloying or diffusion methods. It not only has the unidirectional conduction characteristics of ordinary diodes, but also can operate in a reverse breakdown state. At present, low temperature coefficient regulators are composed of two regulators connected in reverse series. Good temperature compensation can be obtained by using the positive and negative temperature coefficients of two voltage stabilizing diodes when they work in the positive and negative directions.

Zener diode, Fast diodes include fast recovery diodes and Schottky diodes, mainly used in high-frequency rectifier circuits, high-frequency switching power supplies, high-frequency resistance capacitance absorption circuits, inverter circuits, etc.

Fast diode has a reverse recovery time of up to 10ns, making it a semiconductor diode with good switching characteristics and short reverse recovery time. Mainly used in electronic circuits such as switching power supplies, PWM pulse width modulators, frequency converters, etc. Used as high-frequency rectifier diode, Flyback diode or damping diode.

Zener diode, Schottky transistor is made based on a barrier layer formed by the contact between metal and semiconductor. Its main characteristics are small forward conduction voltage drop (about 0.45V), short reverse recovery time, and low switching loss. It is a low-power, ultra high-speed semiconductor device widely used in circuits such as switching power supplies, frequency converters, and drivers. It can be used as high frequency, low voltage, high current rectifier diode, Flyback diode and protection diode, or as rectifier diode and small signal detection diode in Microwave transmission and other circuits.