This part is a kind of semiconductor called C5902.

Function of this product has 2SC5902.

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

Power Transistors 2SC5902 Silicon NPN triple diffusion mesa type Horizontal deflection output for TV 15.5±0.5 (10.0) Unit: mm φ 3.2±0.1 5˚ (4.5) 3.0±0.3 5˚ ■ Features • High breakdown voltage: VCBO ≥ 1 700 V • Wide safe operation area • Built-in dumper diode 26.5±0.5 (23.4) (2.0) 5˚ (4.0) 2.0±0.2 1.1±0.1 0.7±0.1 5.45±0.3 10.9±0.5 5.5±0.3 5˚ 5˚ ■ Absolute Maximum Ratings TC = 25°C Symbol VCBO VCES VEBO IB IC ICP PC Tj Tstg Ta = 25°C Rating 1 700 1 700 7 3 9 14 40 3 150 −55 to +150 °C °C Unit V V V A A A W Parameter Collector-base voltage (Emitter open) Collector-emitter voltage (E-B short) Emitter-base voltage (Collector open) Base current Collector current Peak collector current * Collector power dissipation 3.3±0.3 18.6± [ ... ]

C5902 PDF Datasheet Download