This part is a kind of semiconductor called 2SK1503.

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 2SK1503 DESCRIPTION ·Drain Current –ID=10A@ TC=25℃ ·Drain Source Voltage- : VDSS=500 (Min) APPLICATIONS ·Designed especially for high voltage,high speed applications, such as off-line switching power supplies , UPS,AC and DC motor controls,relay and solenoid drivers. ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL ARAMETER VDSS Drain-Source Voltage (VGS=0) VGS Gate-Source Voltage ID Drain Current-continuous@ TC=25℃ Ptot Total Dissipation@TC=25℃ Tj Max. Operating Junction Temperature Tstg Storage Temperature Range VALUE UNI T 500 V ±30 V 10 A 80 W 150 ℃ -55~150 ℃ isc website：www.iscsemi.cn 1 isc & iscsemi is registered trademark PDF pdfFactory Pro www.fineprint.cn INCHANGE Sem [ ... ]

2SK1503 PDF Datasheet Download