This part is a kind of semiconductor called IRFS640A.

Function of this product has N-Channel MOSFET Transistor.

Manufacturers : Inchange Semiconductor

Image and pinout :

Some of the text within the PDF file :

INCHANGE Semiconductor isc N-Channel MOSFET Transistor isc Product Specification IRFS640A FEATURES ·Avalanche Rugged Technology ·Rugged Gate Oxide Technology ·Lower Input Capacitance ·Improved Gate Charge ·Extended Safe Operating Area ·Lower Leakage Current : 10 A (Max.) @ VDS = 200V DESCRIPTION ·Designed for use in switch mode power supplies and general purpose applications. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VDSS Drain-Source Voltage VGS Gate-Source Voltage-Continuous ID Drain Current-Continuous IDM Drain Current-Single Pluse PD Total Dissipation @TC=25℃ TJ Max. Operating Junction Temperature Tstg Storage Temperature VALUE UNIT 200 ±30 V V 9.8 A 72 A 43 W -55~150 -55~150 ℃ ℃ THERMAL CHARACTERISTICS SYMBOL PARAMETER Rth j-c Rth j-a Th [ ... ]

IRFS640A PDF Datasheet Download