High Voltage FRED Diodes PANJIT High Voltage FRED (Fast Recovery Epitaxial Diodes) Diodes have a voltage range of 600V to 1200V and are ideal as rectification or freewheeling in various power applications. The FRED diodes feature low leakage current and soft recovery characteristics for better EMI. These power FREDs have the best trade-off performance for supporting power electronic engineers to design power systems with maximized efficiency.