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Ordering number EN1968A NPN Triple Diffused Planar Silicon Transistor 2SC3749 500V/3A Switching Regulator Applications Features Package Dimensions High breakdown voltage and high reliability. unit mm Fast switching speed. 2041A Wide ASO. [2SC3749] Adoption of MBIT process. Micaless package facilitating mounting. 1 Base 2 Collector 3 Emitter SANYO TO-220ML Specifications Absolute Maximum Ratings at Ta = 25 C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO 800 V Collector-to-Emitter Voltage VCEO 500 V Emitter-to-Base Voltage VEBO 7 V Collector Current IC 3 A Collector Current (Pulse) ICP PW 300 s, Duty Cycle 10% 6 A Base Current IB 1 A Collector Dissipation PC Tc=25 C 25 W Junction Temperature Tj 150 C Storage Temperature Tstg 55 to +150 C Electrical Characteristics at Ta = 25 C Ratings