This part is a kind of semiconductor called BCP56-16T1G.

Function of this product has NPN Silicon Epitaxial Transistor.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

BCP56 Series NPN Silicon Epitaxial Transistor These NPN Silicon Epitaxial transistors are designed for use in audio amplifier applications. The device is housed in the SOT−223 package, which is designed for medium power surface mount applications. Features • High Current: 1.0 A • The SOT−223 package can be soldered using wave or reflow. The formed leads absorb thermal stress during soldering, eliminating the possibility of damage to the die • Available in 12 mm Tape and Reel Use BCP56T1G to Order the 7 inch/1000 Unit Reel Use BCP56T3G to Order the 13 inch/4000 Unit Reel • PNP Complement is BCP53T1G • S and NSV Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q101 Qualified and PPAP Capable • These Devices are Pb−Fr [ ... ]

BCP56-16T1G PDF Datasheet Download