The 2SA1435 is the subject of this 29.8 KB PDF, and the file name gives nothing beyond the part number. Japanese JIS numbering assigns the 2SA prefix to PNP transistors originally classed for high-frequency operation. Look here for maximum collector-emitter voltage, collector current, power dissipation and lead identification. When replacing the device, confirm that the base, collector and emitter positions match the footprint on the PCB, because similar packages from different makers can swap pins.
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.