This part is a kind of semiconductor called BB914.

Function of this product has Silicon Variable Capacitance Diode.

Manufacturers : Infineon Technologies AG

Image and pinout :

Some of the text within the PDF file :

BB914... Silicon Variable Capacitance Diode
For FM radio tuner with extended frequency band
High tuning ratio at low supply voltage (car radio)
Monolitic chip (common cathode) for perfect dual diode tracking
Good linearity for C- V curve
High figure of merit BB914 3 D 1 D 2 1 2 Type BB914 Package SOT23 Configuration common cathode LS(nH) Marking 1.8 SM Maximum Ratings at TA = 25°C, unless otherwise specified Parameter Symbol Value Unit Diode reverse voltage Peak reverse voltage ( R
5k ) Forward current Operating temperature range Storage temperature VR VRM IF Top Tstg 18 20 50 -55 ... 125 -55 ... 150 V mA °C 1 Dec-04-2002 BB914... Electrical Characteristics at TA = 25°C, unless otherwise specified Symbol Values Parameter min. DC Characteristics Reverse c [ ... ]

BB914 PDF Datasheet Download