This part is a kind of semiconductor called C2482.
Function of this product has 2SC2482.
Manufacturers : Toshiba Semiconductor
Image and pinout :
Some of the text within the PDF file :
High-Voltage Switching and Amplifier Applications
Color TV Horizontal Driver Applications
Color TV Chroma Output Applications
1. High breakdown voltage: VCEO = 300 V
2. Small collector output capacitance: Cob = 3.0 pF (typ.)
3. Recommended for chroma output and driver applications for line-operated TV horizontal.
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C2482 PDF Datasheet Download