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Fast Recovery Diode (FRD) is a semiconductor device with fast reverse recovery characteristics. It is widely used in high-frequency switching power supplies, inverters, motor drives and other circuits requiring fast switching.
This guide helps engineers understand FRD characteristics, selection criteria and precautions in practical applications.
Definition: Time required to clear stored minority carriers when switching from forward conduction to reverse blocking.
Importance: Shorter trr means faster switching speed of FRD, suitable for high-frequency applications.
Definition: Maximum reverse current during reverse recovery.
Definition: Total charge flowing during reverse recovery.
Definition: Voltage drop of FRD under forward conduction.
Importance: Lower VF means lower conduction loss, suitable for high-efficiency circuits.
