This part is a kind of semiconductor called C5855.

Function of this product has 2SC5855.

Manufacturers : Toshiba Semiconductor

Image and pinout :

Some of the text within the PDF file :

2SC5855 TOSHIBA TRANSISTOR SILICON NPN TRIPLE DIFFUSED MESA TYPE 2SC5855 HORIZONTAL DEFLECTION OUTPUT FOR SUPER HIGH RESOLUTION DISPLAY, COLOR TV, DIGITAL TV HIGH SPEED SWITCHING APPLICATIONS High Voltage Low Saturation Voltage High Speed Unit: mm : VCBO = 1500 V : VCE (sat) = 3 V (max) : tf(2) = 0.1 µs (typ.) MAXIMUM RATINGS (Tc = 25°C) CHARACTERISTIC Collector−Base Voltage Collector−Emitter Voltage Emitter−Base Voltage Collector Current Base Current Collector Power Dissipation Junction Temperature Storage Temperature Range DC Pulse SYMBOL VCBO VCEO VEBO IC ICP IB PC Tj Tstg RATING 1500 700 5 10 20 5 50 150 −55~150 UNIT V V V A A W °C °C JEDEC JEITA TOSHIBA ― ― 2-16E3A Weight: 5.5 g (typ.) ELECTRICAL CHARACTERISTICS (Tc = 25°C) CHARACTERISTIC C [ ... ]

C5855 PDF Datasheet Download