A 200 KB PDF on the 2N3905, distinguished by an RE suffix that the name leaves unexplained, possibly an alternate or revised vendor edition. Indexed as a schematic, it is expected to contain standard datasheet content for this JEDEC part. Repair use centres on pin identification, maximum ratings and characteristics for in-circuit testing and substitution. A plain 2N3905 file also exists in the collection, and comparing the two can clarify any discrepancies in package or limit values.
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.