2SD2178

The 2SD2178 is a type of power transistor, which is silicon PNP planar type.Features of 2SD2178 are:(1)low collector -emitter saturation voltage; (2)high collector current.

The absolute maximum ratings and electrical characteristics(Tc=25) of the 2SD2178 can be summarized as: (1)colle ctor-base voltage: 50V; (2)collector-emitter voltage: 50V; (3)emitter-base voltage: 5V; (4)peak collector current: 4A; (5):collector current: 4A; (6)collector power dissipation(Tc=25): 1.5W; (7)junction temperature: 150; (8)storage temperature: -55 to 150. Electrical characteristics: (1)collector-emitter voltage(IC=100mA, IB=0): 50V min; (2)em itter-base voltage(IE=10uA, IC=0): 5V min;(3)DC current gain(VCE=2V, IC=200mA): 120min and 340 max; (4)collec tor-emitter saturation voltage(IC=1A, IB=50mA): 0.15V typ and 0.3V max; (5):base-emitter saturation volage(IC=1A, IB=50mA): 0.85V typ and 1.2V max; (6)transition frequency(VCB=10V, IE=-50mA, f=200MHz): 110MHz typ; (7)collec tor output capacitance(VCB=10V, IE=0, f=1MHz): 23pF typ and 35pF max; (8)collector cutoff current(VCB=20V, IE=0): 0.1uA max, etc.