This part is a kind of semiconductor called BF393.

Function of this product has NPN SILICON HILGH VOLTAGE VIDEO TRANSISTORS.

Manufacturers : CDIL

Image and pinout :

Some of the text within the PDF file :

Continental Device India Limited An IS/ISO 9002 and IECQ Certified Manufacturer NPN SILICON HILGH VOLTAGE VIDEO TRANSISTORS IS/ISO 9002 Lic# QSC/L- 000019.2 BF391 BF392 BF393 TO-92 Plastic Package Designed For High Voltage Video Amplifier in Television Receivers. ABSOLUTE MAXIMUM RATINGS(Ta=25ºC unless specified otherwise) DESCRIPTION SYMBOL 391 392 393 Collector Emitter Voltage VCEO 200 250 300 Collector Base Voltage VCBO 200 250 300 Emitter Base Voltage VEBO 6 66 Collector Current Continuous IC 500 Power Dissipation@ Ta=25ºC PD 625 Power Dissipation@ Tc=25ºC PD 1.5 Operating And Storage Junction Tj, Tstg -55 to +150 Temperature Range THERMAL RESISTANCE Junction to ambient Junction to case Rth(j-a) Rth(j-c) 200 83.3 ELECTRICAL CHARACTERISTICS (Ta=25ºC U [ ... ]

BF393 PDF Datasheet Download