View 2sd2553 datasheet:

2SD2553 TOSHIBA TRANSISTOR SILICON NPN TRIPLE DIFFUSED MESA TYPE 2SD2553 HORIZONTAL DEFLECTION OUTPUT FOR HIGH Unit: mm RESOLUTION DISPLAY, COLOR TV HIGH SPEED SWITCHING APPLICATIONS High Voltage : VCBO = 1700 V Low Saturation Voltage : V = 5 V (Max.) CE (sat) High Speed : t = 0.3 µs (Typ.) f Bult-in Damper Type Collector Metal (Fin) is Fully Covered with Mold Resin. MAXIMUM RATINGS (Tc = 25°C) CHARACTERISTIC SYMBOL RATING UNIT Collector-Base Voltage VCBO 1700 V Collector-Emitter Voltage VCEO 600 V Emitter-Base Voltage VEBO 5 V DC IC 8 Collector Current A JEDEC ? Pulse ICP 16 Base Current IB 4 A JEITA ? Collector Power Dissipation PC 50 W TOSHIBA 2-16E3A Junction Temperature Tj 150 °C Weight: 5.5 g (typ.) Storage Temperature Range T