This specification covers the detail requirements for silicon rectifier diodes. Four levels of product assurance are provided for each device type as specified in MIL-S-19500. Provision for radiation hardness assurance (RHA) to four radiation test levels is provided for JANTXV and JANS product assurance levels. RHA level designators "M", "D", "R" and "H" are appended to make the device prefix to identify devices which have passed RHA requirements.