High power pnp transistors st tip42a power transistor pnp polarity 60v collector emitter breakdown voltage 60v collector base breakdown voltage 6a collector current 65w power 75 dc current gain 3mhz transition frequency to 220 case complementary pnp npn devices new enhanced series high switching speed hfe improved linearity suitable for general purpose circuits audio amplifier power linear and switching tip42a 65w 60v pnp gp transistor