PDF of 86.6 KB for the 2N4036, with an r0 tag in the name that likely marks a revision zero edition, though the file does not say so explicitly. It appears in the index as a schematic but is expected to be a single-device datasheet. Open it with any PDF reader to check pinout, case drawing and maximum ratings when testing or swapping the part. A second, plain-named 2N4036 file exists in the collection, so comparing both helps resolve any conflicting values.
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)