This part is a kind of semiconductor called IRF432.

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 IRF432 DESCRIPTION ·silicon Gate for fast switching at elevate ·rugged ·low drive requirements ·ease of paralleling APPLICATIONS ·high speed applications such as Switching power supplies,AC and DCmotor controls relay and solenoid driver. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL ARAMETER VALUE UNIT VDSS VGS ID Ptot Tj Tstg Drain-Source Voltage (VGS=0) Gate-Source Voltage 500 ±20 V V Drain Current-continuous@ TC=25℃ 4.0 A Total Dissipation@TC=25℃ 75 W Max. Operating Junction Temperature -55~150 ℃ Storage Temperature Range -55~150 ℃ THERMAL CHARACTERISTICS SYMBOL PARAMETER MAX UNIT Rth j-c Rth j-a Thermal Resistance,Junction to Case Thermal Resistance,Junction to Ambient 0.83 [ ... ]

IRF432 PDF Datasheet Download