The 2SB1140 is covered by this 103 KB PDF, catalogued in the schematic section. Japanese JIS numbering assigns 2SB to PNP transistors meant for low-frequency service, so the document most likely lists electrical ratings, hFE groups, package drawing and pin order. A repair technician reaches for such a sheet when verifying a part by its marking, checking polarity during diode-mode testing, or picking a substitute whose voltage, current, dissipation and gain range are equal or better than the original.
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.