This part is a kind of semiconductor called C5802D.

Function of this product has KSC5802D.

Manufacturers : Fairchild Semiconductor

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Some of the text within the PDF file :

KSC5802D KSC5802D High Voltage Color Display Horizontal Deflection Output (Built In Damper Diode) • • • • High Breakdown Voltage BVCBO=1500V High Speed Switching : tF=0.1µs (Typ.) Wide S.O.A For C-Monitor(69KHz) B Equivalent Circuit C 1 50Ω typ. E TO-3PF 2.Collector 3.Emitter 1.Base NPN Triple Diffused Planar Silicon Transistor Absolute Maximum Ratings TC=25°C unless otherwise noted Symbol VCBO VCEO VEBO IC ICP PC TJ TSTG Parameter Collector-Base Voltage Collector-Emitter Voltage Emitter-Base Voltage Collector Current (DC) Collector Current (Pulse) Collector Dissipation (TC=25°C) Junction Temperature Storage Temperature Value 1500 800 6 10 30 60 150 - 55 ~ 150 Units V V V A A W °C °C Electrical Characteristics TC=25°C unless otherwise noted Symbol [ ... ]

C5802D PDF Datasheet Download