This part is a kind of semiconductor called BFW92A.

Function of this product has Silicon NPN Planar RF Transistor.

Manufacturers : Vishay Telefunken

Image and pinout :

Some of the text within the PDF file :

BFW92A Vishay Telefunken Silicon NPN Planar RF Transistor Electrostatic sensitive device. Observe precautions for handling. Applications Wide band RF amplifier up to GHz range. Features D High power gain D Low noise figure 3 2 94 9308 13623 1 BFW92A Marking: BFW92A Plastic case (TO 50) 1 = Collector, 2 = Emitter, 3 = Base Absolute Maximum Ratings Tamb = 25_C, unless otherwise specified Parameter Collector-base voltage Collector-emitter voltage Emitter-base voltage Collector current Total power dissipation Junction temperature Storage temperature range Test Conditions Symbol VCBO VCEO VEBO IC Ptot Tj Tstg Value 25 15 2.5 25 300 150 –55 to +150 Unit V V V mA mW °C °C Tamb ≤ 60 °C Maximum Thermal Resistance Tamb = 25_C, unless otherwise specified Parameter Test Conditions Ju [ ... ]

BFW92A PDF Datasheet Download