A 127 KB PDF on the 2SA1450, listed among schematics though the name refers to a single semiconductor. In JIS numbering the 2SA series consists of PNP transistors for high-frequency applications. The file will be most useful for confirming the pinout and package before removing or installing the part, checking maximum collector-emitter voltage and current, and reviewing gain and frequency characteristics when no exact replacement is in stock. Verify the marking on the device matches 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.