This part is a kind of semiconductor called BCP53-16T1G.

Function of this product has PNP Silicon Epitaxial Transistors.

Manufacturers : ON Semiconductor

Image and pinout :

Some of the text within the PDF file :

BCP53 Series PNP Silicon Epitaxial Transistors This PNP Silicon Epitaxial transistor is 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. • High Current • NPN Complement is BCP56 • 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 • Device Marking: BCP53T1G = AH BCP53−10T1G = AH−10 BCP53−16T1G = AH−16 • S Prefix for Automotive and Other Applications Requiring Unique Site and Control Change Requirements; AEC−Q101 Qualified and PPAP Capable • These Devices are Pb−Free, Halogen Free/BFR Free and are RoHS Compliant MAXIMUM RATINGS (TC = 25°C unle [ ... ]

BCP53-16T1G PDF Datasheet Download