This part is a kind of semiconductor called APM9946K.

Function of this product has Dual N-Channel Enhancement Mode MOSFET.

Manufacturers : Anpec Electronics Coropration

Image and pinout :

Some of the text within the PDF file :

APM9946K Dual N-Channel Enhancement Mode MOSFET Features • 60V/5A, RDS(ON) =38mΩ(Typ.) @ VGS = 10V RDS(ON) =55mΩ(Typ.) @ VGS = 4.5V Pin Description D1 D1 D2 D2 S1 G1 S2 G2 • • • Super High Dense Cell Design Reliable and Rugged Lead Free and Green Devices Available (RoHS Compliant) Top View of SOP − 8 (8) (7) D1 D1 (6) (5) D2 D2 Applications • Power Management in DC/DC Converter, DC/AC Inverter Systems. (2) G1 (4) G2 S1 (1) S2 (3) N-Channel MOSFET Ordering and Marking Information APM9946 Assembly Material Handling Code Temperature Range Package Code Package Code K : SOP-8 Operating Junction Temperature Range C : -55 to 150 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device XXXXX - Date Code APM9946 K : APM9946 XXXXX Note: ANPEC [ ... ]

APM9946K PDF Datasheet Download