This part is a kind of semiconductor called 5N50.

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 5N50 ·DESCRIPTION ·Drain Current ID= 5A@ TC=25℃ ·Drain Source Voltage- : VDSS= 500V(Min) ·Fast Switching Speed ·APPLICATIONS ·General purpose power amplifier ABSOLUTE MAXIMUM RATINGS(TC=25℃) SYMBOL ARAMETER VALUE UNIT VDSS Drain-Source Voltage (VGS=0) VGS Gate-Source Voltage ID Drain Current-continuous@ TC=25℃ 500 ±30 4.5 V V A ID(puls) Pulse Drain Current 20 A Ptot Total Dissipation@TC=25℃ 100 W Tj Max. Operating Junction Temperature 150 ℃ Tstg 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 1.67 ℃/W 62.5 ℃/W isc website：www. [ ... ]

5N50 PDF Datasheet Download