Short PDF of 38.2 KB covering the 2SA1635, a part number that follows the Japanese JIS scheme where 2SA identifies a high-frequency PNP bipolar transistor. Although catalogued as a schematic, the file is a component reference rather than a board diagram. It is handy when a failed transistor must be swapped: compare the pin order, package outline and voltage and current limits against the original, and when choosing a substitute make sure its ratings meet or exceed those listed here.
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.