View 2sc3040 datasheet:

Ordering number:EN997B NPN Triple Diffused Planar Silicon Transistor 2SC3040 400V/8A Switching Regulator Applications Features Package Dimensions · High breakdown voltage (VCBO? 500V). unit:mm · Fast switching speed. 2022A · Wide ASO. [2SC3040] 1 : Base 2 : Collector 3 : Emitter SANYO : TO-3PB Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO 500 V Collector-to-Emitter Voltage VCEO 400 V Emitter-to-Base Voltage VEBO 7 V Collector Current IC 8 A Collector Current (Pulse) ICP PW? 300µ s, Duty Cycle? 10% 16 A Base Current IB 3 A Collector Dissipation PC 2.5 W Tc=25?C 80 W Junction Temperature Tj 150 ?C Storage Temperature Tstg –55 to +150 ?C Electrical Characteristics at Ta = 25?C Rating