This part is a kind of semiconductor called 7413.

Function of this product has Power MOSFET(Vdss=30V/ Id=12A).

Manufacturers : International Rectifier

Image and pinout :

Some of the text within the PDF file :

PD- 91330F SMPS MOSFET Applications l High frequency DC-DC converters IRF7413 HEXFET® Power MOSFET RDS(on) max(mW) 11@VGS = 10V VDSS 30V ID 12A Benefits l Low Gate to Drain Charge to Reduce Switching Losses l Fully Characterized Capacitance Including Effective COSS to Simplify Design, (See App. Note AN1001) l Fully Characterized Avalanche Voltage and Current S S S G 1 8 A A D D D D 2 7 3 6 4 5 Top View SO-8 Absolute Maximum Ratings Parameter ID @ TA = 25°C ID @ TA = 70°C IDM PD @TA = 25°C VGS dv/dt TJ TSTG Continuous Drain Current, VGS @ 10V Continuous Drain Current, VGS @ 10V Pulsed Drain Current  Power Dissipation„ Linear Derating Factor Gate-to-Source Voltage Peak Diode Recovery dv/dt † Operating Junction and Storage Temperature Range Soldering Temperature, for [ ... ]

7413 PDF Datasheet Download