PDF reference for the 2SD1160, about 220 KB, indexed as a schematic although the file name names only a transistor part. The JIS code 2SD denotes an NPN bipolar transistor designed for low-frequency circuits. A sheet of this size usually carries rating tables, characteristic graphs and an outline drawing. Technicians use it to confirm lead assignment and limits when diagnosing a shorted or open device. The ratings also show whether a proposed substitute will survive in the same position.
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.