Reference sheet for the 2SA1346 in an 87.7 KB PDF. The name gives only the part number, so despite being indexed as a schematic it is most likely the device datasheet. The 2SA prefix under JIS rules indicates a PNP transistor for high-frequency applications. Open it in any PDF reader to read pin assignment, case outline, maximum voltage and current and gain grades. Check that the body code, normally printed as A1346, matches the component before relying on the data.
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.