MIL-PRF-19500-359 Semiconductor Device, Diode, Silicon, Fast Recovery, Power Rectifier, 1N4942, 1N4944, 1N4946, 1N4947, And 1N4948, Jan, Jantx, And JantxvThis specification covers the performance requirements for a silicon, fast recovery semiconductor power rectifier diode for use in equipment circuits. Three levels of product assurance are provided for each device as specified in MIL-PRF-19500.