This part is a kind of semiconductor called 14N05.

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 14N05 ·FEATURES ·Drain Current ID= 14A@ TC=25℃ ·Drain Source Voltage- : VDSS= 50V(Min) ·Static Drain-Source On-Resistance : RDS(on) = 0.1Ω(Max) ·Fast Switching ·APPLICATIONS ·Switch regulators ·Switching converters motor drivers and relay drivers ·ABSOLUTE MAXIMUM RATINGS(Ta=25℃) SYMBOL PARAMETER VALUE UNIT VDSS VGS Drain-Source Voltage Gate-Source Voltage-Continuous 50 ±10 V V ID Drain Current-Continuous 14 A PD Total Dissipation @TC=25℃ 48 W Tj Max. Operating Junction Temperature 150 ℃ Tstg Storage Temperature -55~150 ℃ isc website：www.iscsemi.cn 1 isc & iscsemi is registered trademark PDF pdfFactory Pro www.fineprint.cn INCHANGE Semiconductor isc N-Channel MOSF [ ... ]

14N05 PDF Datasheet Download