Compact 42.0 KB PDF for the 2SD1135, catalogued under schematics but evidently a datasheet for that single transistor. Japanese JIS numbering uses 2SD for NPN bipolar devices aimed at low-frequency applications. Small sheets like this usually hold a ratings table, characteristics and a package outline. Read the lead order before removing the old part, then compare breakdown voltage, collector current and dissipation when selecting an available substitute.
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.
Any PDF readerSumatraPDFFirefox / ChromeFlexBV (links PDF to boardview)