This series of plastic medium-power silicon NPN transistors can be used for amplifier and switching applications. Complementary types are BD438 and BD442.
TRANSISTOR, NPN, 60V, 4A, TO-225; Transistor Polarity: NPN; Collector Emitter Voltage V(br)ceo: 60V; Transition Frequency ft: 3MHz; Power Dissipation Pd: 36W; DC Collector Current: 4A; DC Current Gain hFE: 20hFE; Transistor Ca