The requested file:
https://pdf.datasheetcatalog.com/datasheet/QT/4N30.pdf
is the data sheet for the following electronic components:

QT Optoelectronics

#	Part Name	Description
1	4N29	GENERAL PURPOSE 6-PIN PHOTODARLINGTON OPTOCOUPLERS
2	4N30	GENERAL PURPOSE 6-PIN PHOTODARLINGTON OPTOCOUPLERS
3	4N31	GENERAL PURPOSE 6-PIN PHOTODARLINGTON OPTOCOUPLERS
4	4N32	GENERAL PURPOSE 6-PIN PHOTODARLINGTON OPTOCOUPLERS
5	4N33	GENERAL PURPOSE 6-PIN PHOTODARLINGTON OPTOCOUPLERS

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