The requested file:
https://pdf.datasheetcatalog.com/datasheets/228/466209_DS.pdf
is the data sheet for the following electronic components:

NEC

#	Part Name	Description
1	PS2601	Optocoupler Applications
2	PS2601L	Optocoupler Applications
3	PS2602	Optocoupler Applications
4	PS2602L	Optocoupler Applications
5	PS2603	HIGH ISOLATION VOLTAGE DARLINGTON TRANSISTOR TYPE 6 PIN OPTOCOUPLER
6	PS2603L	HIGH ISOLATION VOLTAGE DARLINGTON TRANSISTOR TYPE 6 PIN OPTOCOUPLER
7	PS2604	HIGH ISOLATION VOLTAGE DARLINGTON TRANSISTOR TYPE 6 PIN OPTOCOUPLER
8	PS2604L	HIGH ISOLATION VOLTAGE DARLINGTON TRANSISTOR TYPE 6 PIN OPTOCOUPLER
9	PS2605	Optocoupler Applications
10	PS2606	Optocoupler Applications
11	PS2606L	Optocoupler Applications
12	PS2607	Optocoupler Applications
13	PS2607L	Optocoupler Applications
14	PS2608	Optocoupler Applications
15	PS2608L	Optocoupler Applications
16	PS2621	Optocoupler Applications
17	PS2621L	Optocoupler Applications
18	PS2622	Optocoupler Applications
19	PS2622L	Optocoupler Applications
20	PS2653	Optocoupler Applications
21	PS2653L2	Optocoupler Applications
22	PS2654	Optocoupler Applications
23	PS2654L2	Optocoupler Applications

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