The requested file:
https://pdf.datasheetcatalog.com/datasheet/irf/1n5818.pdf
is the data sheet for the following electronic components:

International Rectifier

#	Part Name	Description
1	1N5818	30V 1A Schottky Discrete Diode in a DO-204AL package
2	1N5818TR	30V 1A Schottky Discrete Diode in a DO-204AL package
3	1N5819	40V 1A Schottky Discrete Diode in a DO-204AL package
4	1N5819TR	40V 1A Schottky Discrete Diode in a DO-204AL package

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