View 2sc4220 datasheet:

Ordering number:EN2825A NPN Triple Diffused Planar Silicon Transistor 2SC4220 400V/7A Switching Regulator Applications Features Package Dimensions · High breakdown voltage, high reliability. unit:mm · Fast switching speed (tf=0.1µ s typ). 2049C · Wide ASO. [2SC4220] · Adoption of MBIT process. 10.2 4.5 1.3 · Suitable for sets whose height is restricted. 1.2 0.8 0.4 1 2 3 1 : Base 2 : Collector 3 : Emitter 2.55 2.55 SANYO : TO-220MF 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 7 A Collector Current (Pulse) ICP PW? 300µ s, duty cycle? 10% 14 A Base Current IB 3 A Collector Dis