PDF datasheet candidate for the 2SJ148, size 283 KB, indexed under schematics. JIS numbering uses 2SJ for P-channel FETs, and the name adds no maker, package or revision details. The document should show gate, drain and source pins, ratings and typical curves. Repair use includes confirming a failed device and finding a replacement of the same polarity; complementary 2SK parts are not interchangeable, so match the channel type as well as voltage, current and footprint.
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.