This part is a kind of semiconductor called BAV70.

Function of this product has Diodes.

Manufacturers : Multicomp

Image and pinout :

Some of the text within the PDF file :

Diodes BA Series Features: • Fast switching speed • Surface mount package ideally suited for automatic insertion • For general purpose switching applications • High conductance SOT-23 Dimensions : Inches (Millimetres) BAW56 Marking : A1 www.element14.com www.farnell.com www.newark.com BAV70 Marking : A4 BAV99 Marking : A7 Page <1> 20/06/12 V1.1 Diodes BA Series Mechanical Data Case Terminals Polarity Marking Weight : SOT-23, moulded plastic : Solderable per MIIL-STD-202, Method 208 : See diagram : BAW56 : A1, BAV70 : A4, BAV99 : A7 : 0.008 g (approximately) Maximum Ratings TA = 25°C unless otherwise specified Type Number Reverse Voltage Forward Current Peak Forward Surge Current Power Dissipation Thermal Resistance Junction to Ambient Air Junction Temperature Storage [ ... ]

BAV70 PDF Datasheet Download