The requested file:
https://pdf.datasheetcatalog.com/datasheet2/9/0pjw2rg867to12z28fcr1dkdsuwy.pdf
is the data sheet for the following electronic components:

ON Semiconductor

#	Part Name	Description
1	UC2842B	High Performance Current Mode Controller
2	UC2842BD	High Performance Current Mode Controller
3	UC2842BD1	High Performance Current Mode Controller
4	UC2842BD1R2	High Performance Current Mode Controller
5	UC2842BN	High Performance Current Mode Controller
6	UC2843B	High Performance Current Mode Controller
7	UC2843BD	High Performance Current Mode Controller
8	UC2843BD1	High Performance Current Mode Controller
9	UC2843BD1R2	High Performance Current Mode Controller
10	UC2843BDR2	High Performance Current Mode Controller
11	UC2843BN	High Performance Current Mode Controller
12	UC3842B	High Performance Current Mode Controller
13	UC3842BD	High Performance Current Mode Controller
14	UC3842BD1	High Performance Current Mode Controller
15	UC3842BD1R2	High Performance Current Mode Controller
16	UC3842BDR2	High Performance Current Mode Controller
17	UC3842BN	High Performance Current Mode Controller
18	UC3842BVD1	High Performance Current Mode Controller
19	UC3842BVD1R2	High Performance Current Mode Controller
20	UC3842BVDR2	High Performance Current Mode Controller
21	UC3843B	High Performance Current Mode Controller
22	UC3843BD	High Performance Current Mode Controller
23	UC3843BD1	High Performance Current Mode Controller
24	UC3843BD1R2	High Performance Current Mode Controller
25	UC3843BDR2	High Performance Current Mode Controller
26	UC3843BN	High Performance Current Mode Controller
27	UC3843BVD	High Performance Current Mode Controller
28	UC3843BVD1	High Performance Current Mode Controller
29	UC3843BVD1R2	High Performance Current Mode Controller
30	UC3843BVDR2	High Performance Current Mode Controller
31	UC3843BVDR2G	High Performance Current Mode Controller
32	UC3843BVN	High Performance Current Mode Controller

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