This part is a kind of semiconductor called 12N10P.
Function of this product has N-CHANNEL MOSFET.
Manufacturers : CHONGQING PINGYANG
Image and pinout :

Some of the text within the PDF file :
12N10P 12 Amps,100 Volts N-CHANNEL Power MOSFET FEATURE 12A,100V,RDS(ON)MAX=36mΩVGS=10V/10A Low gate charge Low Ciss Fast switching 100% avalanche tested Improved dv/dt capability APPLICATION High Frequency Piont-of-Load Synchronous Buck Converter for MB/NB/UMPC/VGA Networking DC-DC Power System LCD/LED back light GENERAL DESCRIPTION SOP8L PIN CONFIGURATION The 12N10P is the highest performance trench N-ch MOSFETs with extreme high cell density, which provide excellent RDSON and gate charge for most of the synchronous buck converter applications. The 12N10P meet the RoHS and Green product requirement,100% EAS guaranteed with full function reliability approved. Absolute Maximum Ratings(TC=25℃,unless otherwise noted) Parameter Symbol Drain-Source [ ... ]
12N10P PDF Datasheet Download
