This part is a kind of semiconductor called 1802FX.
Function of this product has MD1802FX.
Manufacturers : ST Microelectronics
Image and pinout :

Some of the text within the PDF file :
MD1802FX High voltage NPN Power transistor for standard Definition CRT display Preliminary Data General features ■ ■ ■ ■ ■ ■ ■ State-of-the-art technology: – Diffused collector “Enhanced generation” More stable performances versus operating temperature variation Low base-drive requirements Tighter hFE range at operating collector current High ruggedness Fully insulated power package U.L. compliant In compliance with the 2002/93/EC European directive 1 2 3 ISOWATT218FX Applications ■ ■ Internal schematic diagram Horizontal deflection output for TV Switch mode power supplies for CRT TV Description The MD1802FX is manufactured using Diffused Collector in Planar Technology adopting new and enhanced high voltage structure. [ ... ]
1802FX PDF Datasheet Download
