This part is a kind of semiconductor called BAV99W.

Function of this product has Silicon Switching Diode Array (Connected in series For high speed switching applications).

Manufacturers : Siemens Semiconductor Group

Image and pinout :

Some of the text within the PDF file :

BAV 99W Silicon Switching Diode Array • Connected in series • For high speed switching applications Type BAV 99W Marking Ordering Code A7s Q62702-A1051 Pin Configuration 1=A1 2=C2 Package 3=C1/A2 SOT-323 Maximum Ratings per Diode Parameter Diode reverse voltage Peak reverse voltage Forward current Surge forward current, t = 1 µs Total Power dissipation Symbol Values 70 70 200 4.5 250 mA A mW 150 - 65 ... + 150 ≤ 430 ≤ 190 °C Unit V VR VRM IF IFS Ptot Tj Tstg RthJA RthJS TS = 103 °C Junction temperature Storage temperature Thermal Resistance Junction ambient 1) K/W Junction - soldering point 1) Package mounted on epoxy pcb 40mm x 40mmm x 1.5mm / 0.5cm2 Cu Semiconductor Group 1 Apr-03-1997 BAV 99W Electrical Characteristics at TA=25°C, unless otherwise specified Pa [ ... ]

BAV99W PDF Datasheet Download