This specification covers the performance requirements for NPN, silicon, power, 2N5002 and 2N5004 transistors for use in high-speed power-switching applications. Four levels of product assurance (JAN, JANTX, JANTXV and JANS) are provided for each encapsulated device type as specified in MIL-PRF-19500/534. Two levels of product assurance (JANHC and JANKC) for each unencapsulated device type die.