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