View 2sc5270 datasheet:

Power Transistors 2SC5270, 2SC5270A Silicon NPN triple diffusion mesa type For horizontal deflection output Unit: mm 15.5± 0.5 3.0± 0.3 ? 3.2± 0.1 Features 5° 5° High breakdown voltage, and high reliability through the use of a glass passivation layer High-speed switching 5° Wide area of safe operation (ASO) 5° 4.0 5° 2.0± 0.2 1.1± 0.1 Absolute Maximum Ratings (TC=25?C) 0.7± 0.1 Parameter Symbol Ratings Unit 5.45± 0.3 5.45± 0.3 Collector to 2SC5270 1500 VCBO V base voltage 2SC5270A 1600 5° Collector to 2SC5270 1500 VCES V base voltage 2SC5270A 1600 1 2 3 1:Base Collector to emitter voltage VCEO 600 V 2:Collector 3:Emitter Emitter to base voltage VEBO 5 V TOP–3E Full Pack Package Peak collector current ICP 20 A Collector current IC 12 A Base current IB