This part is a kind of semiconductor called STV9302.
Function of this product has VERTICAL DEFLECTION OUTPUT.
Manufacturers : ST Microelectronics
Image and pinout :

Some of the text within the PDF file :
STV9302 VERTICAL DEFLECTION OUTPUT FOR MONITOR / TV 2 App / 60 V WITH FLYBACK GENERATOR FEATURES • Power Amplifier • Flyback Generator • Output Current up to 2 App • Thermal Protection DESCRIPTION The STV9302 is a vertical deflection booster designed for monitor and TV applications. This device, supplied with up to 32 V, provides up to 2 App output current to drive the vertical deflection yoke. The internal flyback generator delivers flyback voltages up to 60 V. PIN CONNECTION (top view) 7 6 5 4 3 2 1 Input (non inverting) Output stage supply Output Ground or negative supply Flyback generator Supply voltage Input (inverting) HEPTAWATT (Plastic Package) ORDER CODE: STV9302 DataShee Tab connected to pin 4 BLOCK DIAGRAM Output stage Flyback Sup [ ... ]
STV9302 PDF Datasheet Download
