View 2sc4454 datasheet:

Ordering number:EN2813 NPN Epitaxial Planar Silicon Transistor 2SC4454 High-Speed Switching Applications Features Package Dimensions · Fast switching speed. unit:mm · Low collector saturation voltage. 2033A · High gain-bandwidth product. [2SC4454] · Small collector capacity. 2.2 4.0 0.4 0.5 0.4 0.4 1 2 3 1.3 1.3 1 : Emitter 2 : Collector 3 : Base 3.0 3.8 SANYO : SPA Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO 40 V Collector-to-Emitter Voltage VCES 40 V VCEO 15 V Emitter-to-Base Voltage VEBO 5 V Collector Current IC 200 mA Collector Current (Pulse) ICP 500 mA Base Current IB 40 mA Collector Dissipation PC 300 mW Junction Temperature Tj 150 ?C Storage Temperature Tstg –55