This part is a kind of semiconductor called BF240.

Function of this product has AM/FM Transistor.

Manufacturers : Motorola Inc

Image and pinout :

Some of the text within the PDF file :

MOTOROLA SEMICONDUCTOR TECHNICAL DATA AM/FM Transistor Order this document by BF240/D NPN Silicon COLLECTOR 1 3 BASE BF240 1 2 2 EMITTER 3 MAXIMUM RATINGS Rating Collector – Emitter Voltage Collector – Base Voltage Emitter – Base Voltage Collector Current Continuous Total Device Dissipation @ TA = 25°C Derate above 25°C Total Device Dissipation @ TC = 25°C Derate above 25°C Operating and Storage Junction Temperature Range Symbol VCEO VCBO VEBO IC PD PD TJ, Tstg Value 40 40 4.0 25 350 2.8 1.0 8.0 – 55 to +150 Unit Vdc Vdc Vdc mAdc mW mW/°C Watt mW/°C °C CASE 29–04, STYLE 21 TO–92 (TO–226AA) THERMAL CHARACTERISTICS Characteristic Thermal Resistance, Junction to Ambient Thermal Resistance, Junction to Case Symbol RqJA RqJC Max 357 125 Unit °C/W °C/W ELEC [ ... ]

BF240 PDF Datasheet Download