This part is a kind of semiconductor called 9960GM.

Function of this product has SSM9960GM.

Manufacturers : Silicon Standard

Image and pinout :

Some of the text within the PDF file :

SSM9960M/GM DUAL N-CHANNEL ENHANCEMENT-MODE POWER MOSFETS Simple drive requirement Lower gate charge Fast switching characteristics D2 D1 D1 D2 BV DSS R DS(ON) G2 S2 40V 20mΩ 7.8A ID SO-8 S1 G1 Description D1 D2 Advanced Power MOSFETs from Silicon Standard provide the designer with the best combination of fast switching, ruggedized device design, low on-resistance and cost-effectiveness. The SSM9960M is in the SO-8 package, which is widely preferred for commercial and industrial surface mount applications, and is well suited for low voltage applications such as DC/DC converters. G1 S1 G2 S2 This device is available with Pb-free lead finish (second-level interconnect) as SSM9960GM. Absolute Maximum Ratings Symbol VDS VGS ID @ TA=25°C ID @ TA=100°C IDM [ ... ]

9960GM PDF Datasheet Download