The difference between Schottky diode and common diode

The main difference between Schottky diode and ordinary diode is that the withstand voltage of ordinary diode can be higher, but its recovery speed is low, and it can only be used for low-frequency rectification. If it is high-frequency, it will cause reverse leakage due to the inability to recover quickly, and finally cause the tube to be severely heated and burned;

The withstand voltage of Schottky diode is often low, but its recovery speed is fast, and it can be used in high-frequency occasions. Therefore, the switching power supply uses this diode as the rectifier output. However, the temperature of the rectifier tube on the switching power supply is still very high.

The recovery time of the former is about 100 times smaller than that of the latter, and the reverse recovery time of the former is about a few nanoseconds --! The former has the advantages of low power consumption, high current and ultra-high speed! Of course, the electrical characteristics are all diodes! The fast recovery diode adopts gold-doped, pure diffusion and other processes in the manufacturing process, which can obtain high switching speed and high voltage withstand. At present, the fast recovery diode is mainly used as the rectifier element in the inverter power supply