Datasheet-type PDF of 183 KB for the JEDEC part number 2N5758, catalogued here as a schematic. The RE suffix in the name is not explained and could be a revision or a publisher tag, so treat it as unconfirmed. No board number, brand or device is stated. A sheet like this helps a technician confirm pinout, case style and absolute maximum ratings, and compare candidate substitutes. Make sure the printed code on the part matches before relying on the figures, because different makers may publish slightly different limits.
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.