MIL-PRF-19500-181 Semiconductor Device, Transistor, Npn, Silicon, Low-Power Types 2N718A, 2N1613 And 2N1613L, Jan, Jantx, And JantxvThis specification covers the performance requirements for NPN silicon, low-power transistors. Three levels of product assurance are provided for each device type as specified in MIL-PRF-19500.