Reference sheet for the 2SJ345 in PDF format, about 333 KB. The name gives only the part number, with no board or device information. In JIS coding, 2SJ denotes a P-channel FET, and such parts often serve as load or power switches. Technicians check this kind of document for maximum drain-source voltage, on-resistance, gate threshold and package drawing. Before ordering a replacement, confirm that the marking on the component really decodes to this type, because abbreviated SMD codes can be ambiguous.
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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