For the 2N6071, this 158 KB PDF is listed among schematics but most likely contains the component datasheet. No further details such as maker, package or revision appear in the name. JEDEC 2N numbers cover two-junction discrete devices, including transistors and some thyristors. Expect pin identification, absolute maximum ratings, electrical characteristics and a case drawing. It helps when testing a suspect part, confirming orientation on the PCB, or finding an equivalent replacement.
The button opens the matching file on RM Schematics, or a source page if it is not catalogued there yet. The original attachment is from @cyberlanelectonik. Enginerys does not host this file.
How to open a .pdf file
The standard format for schematics, block diagrams, power-sequence charts and service manuals.