Fast Recovery Epitaxial Diode vs Fast Recovery Diode Module

FRED (Fast Recovery Epitaxial Diode) diodes use epitaxial layers for ultra-fast recovery times, typically under 50 ns, ideal for high-frequency, RF, and high-speed switching applications. They have very low reverse recovery charge, reducing switching losses. FRD (Fast Recovery Diode) is a broader category of silicon-based diodes designed for fast recovery, usually with recovery times from 50 ns to hundreds of nanoseconds. While both are used in power switching, FREDs are specialized for ultra-high-speed, low-loss applications, whereas FRDs are more versatile for general high-speed rectification in power supplies and motor drives.