Date：2025-07-08 Categories：Product knowledge Hits：219 From：Guangdong Youfeng Microelectronics Co., Ltd
A Fast Recovery Diode (FRD) is a semiconductor device specifically designed to quickly switch from a conducting state to a cutoff state in a circuit. Compared to traditional rectifier Diode, fast recovery diodes have a shorter reverse recovery time (TRR), which makes them very suitable for high-frequency and high-speed switching applications, such as switching power supplies, EPM7256ATETC100-7 frequency converters, and power electronic conversion devices. Fast recovery diodes can reduce switching losses and improve the overall efficiency and performance of the system.
1、 Basic structure:
The basic structure of a fast recovery Diode consists of a p-type semiconductor material and an n-type semiconductor material, forming a pn junction between them. This pn junction plays a role in controlling the unidirectional flow of current in the circuit. Unlike ordinary diodes, the manufacturing process of fast recovery Diode is optimized to reduce the recombination time of charge carriers, thereby achieving fast reverse recovery characteristics. This is usually achieved by introducing special dopants into semiconductor materials, optimizing depletion region widths, and using advanced semiconductor manufacturing technologies.
2、 Characteristics:
1. Unidirectional conductivity: A Diode conducts electricity under forward bias and turns off under reverse bias.
2. Low forward voltage drop: There is only a small voltage drop when the diode is conducting.
3. High reverse breakdown voltage: Under reverse bias, diodes can withstand high voltages without being broken down.
4. Fast switching speed: Special types of Diodes (such as Schottky diodes) can achieve very fast switching
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