This part is a kind of semiconductor called FS8205A.

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

Manufacturers : CanSheng Industry

Image and pinout :

Some of the text within the PDF file :

ShenZhen CanSheng Industry Development Co.,Ltd. www.szcansheng.com FS8205A Dual N-Channel Enhancement Mode MOSFET Features z 20V/6A, RDS(ON)<25mΩ @ VGS=4.5V RDS(ON) <34mΩ @ VGS=2.5V z Super High Dense Cell Design z Reliable and Rugged z Lead Free Available (RoHS Compliant) Pin Description Top View D1 S1 2 S1 3 G1 4 8D 7 S2 6 S2 5 G2 TSSOP-8 Applications z Portable Equipment and Battery Powered Systems. N Channel MOSFET 1/5 FS8205A Absolute Maximum Ratings (TA=25°C Unless Otherwise Noted) Symbol VDSS VGSS ID* IDM* IS* TJ TSTG Parameter Drain-Source Voltage Gate-Source Voltage Continuous Drain Current 300μs Pulsed Drain Current Diode Continuous Forward Current Maximum Junction Temperature Storage Temperature Range PD* Maximum Power Dissipation RθJA* Thermal Resistance-J [ ... ]

FS8205A PDF Datasheet Download