MIL-PRF-19500-594 Semiconductor Device, Diode, Silicon, Power Rectifier, Ultra Fast Recovery, Low Leakage, Types 1N6664 Through 1N6666, And 1N6664R Through 1N6666R Jan, Jantx, Jantxv, And JansThis specification covers the performance requirements for a silicon, fast recovery power rectifier diodes. Four levels of product assurance are provided for each device type as specified in MIL-PRF-19500.