Part-number PDF, 132 KB, for the JEDEC-registered device 2N6798, listed in the schematic category. The name is uninformative beyond that code, so no host device or board can be inferred. Expect datasheet material covering absolute maximum ratings, electrical parameters and the case drawing. Repair work benefits from it when identifying pins before in-circuit testing or when cross-referencing a substitute. Check that the marking on the physical component and its package agree with what the document describes.
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.