The requested file:
https://pdf.datasheetcatalog.com/datasheet/irf/300u.pdf
is the data sheet for the following electronic components:

International Rectifier

#	Part Name	Description
1	300U100A	1000V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
2	300U10A	100V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
3	300U20A	200V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
4	300U30A	400V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
5	300U40A	400V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
6	300U5A	50V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
7	300U60A	600V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
8	300U80A	800V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
9	300UR10A	100V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
10	300UR20A	200V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
11	300UR40A	400V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
12	302U10A	100V 300A Std. Recovery Diode in a DO-205AB (DO-9)package
13	302UR10A	100V 300A Std. Recovery Diode in a DO-205AB (DO-9)package

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