This specification covers the performance requirements for NPN silicon, VHF-UHF amplifier transistors. Four levels of product assurance (JAN, JANTX, JANTXV and JANS) are provided for each encapsulated device type as specified in MIL-PRF-19500 and two levels of product assurance (JANHC and JANKC) are provided for each unencapsulated device type. Provisions for radiation hardness assurance (RHA) to two radiation levels (\"R\" and \"F\") are provided for JANTXV product assurance level. Provisions for RHA to eight radiation levels is provided for JANS, JANHC and JANKC product assurance levels. RHA level designators \"M\", \"D\", \"P\", \"L\", \"R\", \"F\", \"G\", and \"H\" are appended to the device prefix to identify devices, which have passed RHA requirements