本规范涵盖了NPN、硅、高速开关晶体管（包括双器件）的性能要求。按照MIL-PRF-19500的规定，每种设备类型提供四个级别的产品保证（JAN、JANTX、JANTXV和JANS），每种未封装设备类型提供两个级别的产品保证。JANTXV产品保证等级提供了两个辐射等级（“R”和“F”）的辐射硬度保证（RHA）规定。为JANS和JANKC提供了RHA至八个辐射水平的规定。RHA级别指示符“M”、“D”、“P”、“L”、“R”、“F”、“G”和“H”附加在设备前缀后，以识别已通过RHA要求的设备。

This specification covers the performance requirements for NPN, silicon, high speed switching transistors (including dual devices). Four levels of product assurance (JAN, JANTX, JANTXV and JANS) are provided for each device type as specified in MIL-PRF-19500, and two levels of product assurance 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 are provided for JANS and JANKC. 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.