BIPOLAR TRANSISTOR NPN 55V TO-66-2; Transistor Polarity:NPN; Collector Emitter Voltage V(br)ceo:55V; Transition Frequency ft:3MHz; Power Dissipation Pd:25W; DC Collector Current:4A; DC Current Gain hFE:150hFE; No. of Pins:2Pins ;RoHS Compliant: Yes