The requested file:
https://pdf.datasheetcatalog.com/datasheet/irf/irfs52n15d.pdf
is the data sheet for the following electronic components:

International Rectifier

#	Part Name	Description
1	IRFB52N15D	150V Single N-Channel HEXFET Power MOSFET in a TO-220AB package
2	IRFB52N15DPBF	150V Single N-Channel HEXFET Power MOSFET in a TO-220AB package
3	IRFS52N15D	150V Single N-Channel HEXFET Power MOSFET in a D2-Pak package
4	IRFSL52N15D	150V Single N-Channel HEXFET Power MOSFET in a TO-262 package

Select the part name and then you can download the datasheet in PDF format.