At 131 KB, this PDF describes the 2SJ417 transistor; although listed as a schematic, it is a part datasheet by its name. Under the JIS designation system the 2SJ prefix stands for a P-channel FET. The name does not reveal maker, package or revision, so match the body marking on the board to the drawing inside. Typical uses include confirming which leg is gate, drain and source, reading on-resistance and gate threshold values, and selecting a safe equivalent when the original part cannot be sourced.
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.
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