This part is a kind of semiconductor called C4212.

Function of this product has 2SC4212.

Manufacturers : Panasonic Semiconductor

Image and pinout :

Some of the text within the PDF file :

Power Transistors 2SC4212 Silicon NPN triple diffusion planar type For color TV horizontal deflection driver φ 3.16±0.1 Unit: mm 8.0+0.5 –0.1 3.2±0.2 1.9±0.1 • High collector to emitter voltage VCEO • TO-126B package which requires no insulation plate for installation to the heat sink 3.8±0.3 11.0±0.5 I Features I Absolute Maximum Ratings TC = 25°C Parameter Collector to base voltage Collector to emitter voltage Emitter to base voltage Peak collector current Collector current Collector power dissipation Symbol VCBO VCEO VEBO ICP IC PC Tj Tstg Rating 350 300 7.5 400 200 1.2 *1 5 Junction temperature Storage temperature *2 Unit V V V mA mA W °C °C 1 2 0.75±0.1 4.6±0.2 0.5±0.1 0.5±0.1 2.3±0.2 3 1.76±0.1 16.0±1.0 1 : Emi [ ... ]

C4212 PDF Datasheet Download