This specification covers the performance requirements for PNP, silicon, high-voltage 2N3743, 2N4930 and 2N4931 transistor. Four levels of product assurance (JAN, JANTX, JANTXV and JANS) are provided for each encapsulated device type as specified in MIL-PRF-19500/397. Two levels of product assurance (JANHC and JANKC) for die are provided for each unencapsulated device. The device package outlines are as follows: TO-39 , and surfacemount U4 package for all encapsulated device types. The dimensions and topography for JANHC and JANKC unencapsulated die are as outlined in MIL-PRF-19500/397.