Switching diode:

1. The switching speed of switching diode is high, that is, the application frequency is high.

2. Switching diode has good high frequency performance and is mainly used in switching circuit as electronic switch.

Rectifier diode:

1. Rectifier diodes are used in the field of power frequency high current.

2. Generally, the high-frequency performance of rectifier diode is not very good (the high-frequency performance of rectifier diode in switching power supply is also very good), which is mainly used for rectifying power frequency current. It usually works in the state of high voltage and high current.

Of course, the selection also depends on the specific situation of the circuit, and the specific parameters need to refer to the specification.