An 85.0 KB PDF covering the 2SA1965, whose 2SA prefix under JIS rules marks a PNP bipolar transistor. The index lists it as a schematic, though a file named solely by a part number is generally a datasheet. Use it when a board needs this device replaced: it gives the pin assignment, outline, ratings for voltage, current and dissipation, and gain bins for matching. The name holds no other detail such as maker or revision, so check the printed marking on the original part.
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.