This part is a kind of semiconductor called MDS1653.

Function of this product has Single N-Channel Trench MOSFET.

Manufacturers : MagnaChip

Image and pinout :

Some of the text within the PDF file :

MDS1653 – Single N-channel Trench MOSFET 30V MDS1653 Single N-Channel Trench MOSFET 30V, 12A, 12mΩ General Description The MDS1653 uses advanced MagnaChip’s MOSFET Technology, which provides low on-state resistance, high switching performance and excellent reliability. MDS1653 is suitable device for DC-DC Converters and general purpose applications. Features à VDS = 30V à ID = 12A @VGS = 10V à RDS(ON) < 12.0mΩ @VGS = 10V < 17.5mΩ @VGS = 4.5V Applications à DC-DC Converters 6(D) 5(D) 7(D) 8(D) D 4(G) 2(S)3(S) 1(S) Absolute Maximum Ratings (Ta = 25oC) Drain-Source Voltage Gate-Source Voltage Characteristics Continuous Drain Current Pulsed Drain Current Power Dissipation (1) Single Pulse Avalanche Energy (2) Junction and Storage Temperature Range Thermal Characteri [ ... ]

MDS1653 PDF Datasheet Download