View 2sc4938 datasheet:

2SC4938 Transistors High-voltage Switching Transistor (400V, 5A) 2SC4938 Features External dimensions (Units : mm) 1) Low VCE(sat). (Typ. 0.6V at IC / IB=5/1A) 13.1 3.2 2) Fast switching. (tf :Max.1µs at IC=4A) 3) Wide SOA. (safe operating area) 8.8 (1) Base (2) Collector (3) Emitter ROHM : PSD3 0.5Min. EIAJ : SC-83A Absolute maximum ratings (Ta=25°C) Parameter Symbol Limits Unit Collector-base voltage VCBO 400 V Collector-emitter voltage VCEO 400 V Emitter-base voltage VEBO 7 V IC 5 A Collector current ICP 7 A ? 1.5 W PC Collector power dissipation 35 W(Tc=25?C) Junction temperature Tj 150 ?C Storage temperature Tstg -55~+150 ?C Single pulse, Pw=100ms. ? Packaging specifications and hFE Type 2SC4938 Package PSD3 hFE B Code TL Basic ordering unit