What is a fast recovery diode? The basic structure, characteristics, principles, applications, installation, fault analysis, and development history of fast recovery diodes 4

6、 Fault analysis:

Fault analysis usually involves the following aspects:

1. Forward conduction fault: If the diode cannot conduct under forward bias, it may be due to internal structural damage or solder joint failure.diode

2. Excessive reverse leakage current: If the leakage current of the diode exceeds the specification during reverse bias, it may be due to internal breakdown or surface contamination of the diode.diode

3. Extended reverse recovery time: If the reverse recovery time of a diode is longer than normal, it may be due to device aging or overheating damage.diode

4. Thermal runaway: When operating at high temperatures, if there is insufficient heat dissipation, the diode may overheat, resulting in decreased performance or even burnout.diode

7、 Development history:

The development of fast recovery diodes began in the 1950s, when the demand for high-speed switching devices in the electronics industry was increasing.diode