This part is a kind of semiconductor called IRFS634A.

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 IRFS634A FEATURES ·Avalanche Rugged Technology ·Rugged Gate Oxide Technology ·Lower Input Capacitance ·Improved Gate Charge ·Extended Safe Operating Area 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 250 V ±30 V 5.8 A 32 A 38 W -55~150 ℃ -55~150 ℃ THERMAL CHARACTERISTICS SYMBOL PARAMETER Rth j-c Rth j-a Thermal Resistance, Junction to Case Thermal Resista [ ... ]

IRFS634A PDF Datasheet Download