This part is a kind of semiconductor called C4544.
Function of this product has 2SC4544.
Manufacturers : Toshiba
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
• High voltage: V (BR) CEO = 300 V
• Small collector output capacitance: Cob = 3.0 pF (typ.)
• Collector metal (fin) is fully covered with mold resin. [ ... ]
C4544 PDF Datasheet Download
