View 2sc4437 datasheet:

Ordering number:EN3792 NPN Triple Diffused Planar Silicon Transistor 2SC4437 Ultrahigh-Definition Color Display Horizontal Deflection Output Applications Features Package Dimensions · High speed (tf=0.3ns max). unit:mm · High breakdown voltage (VCBO=1500V). 2039D · High reliability (adoption of HVP process). [2SC4437] · Adoption of MBIT process. 16.0 5.6 3.4 3.1 2.8 2.0 2.0 1.0 0.6 1 : Base 1 2 3 2 : Collector 3 : Emitter 5.45 5.45 SANYO : TO-3PML Specifications Absolute Maximum Ratings at Ta = 25?C Parameter Symbol Conditions Ratings Unit Collector-to-Base Voltage VCBO 1500 V Collector-to-Emitter Voltage VCEO 800 V Emitter-to-Base Voltage VEBO 7 V Collector Current IC 5 A Collector Current (Pulse) ICP 16 A Collector Dissipation PC 3 W Tc=25?C 50 W