2sc4220.pdf datasheet:

Ordering number:EN2825ANPN Triple Diffused Planar Silicon Transistor2SC4220400V/7A Switching Regulator ApplicationsFeatures Package Dimensions High breakdown voltage, high reliability.unit:mm Fast switching speed (tf=0.1 s typ).2049C Wide ASO.[2SC4220] Adoption of MBIT process.10.24.51.3 Suitable for sets whose height is restricted.1.20.80.41 2 31 : Base2 : Collector3 : Emitter2.55 2.55SANYO : TO-220MFSpecificationsAbsolute Maximum Ratings at Ta = 25CParameter Symbol Conditions Ratings UnitCollector-to-Base Voltage VCBO 500 VCollector-to-Emitter Voltage VCEO 400 VEmitter-to-Base Voltage VEBO 7 VCollector Current IC 7 ACollector Current (Pulse) ICP PW 300 s, duty cycle 10% 14 ABase Current IB 3 ACollector Dissipation PC 1.65 WTc=25C 50 WJunction Temperature Tj 150 CStorage Temperatu