Component datasheet for the 2N5366, a 60.8 KB PDF filed in the schematic category. The name gives only the part number, with no manufacturer, package or revision details. Open it in a PDF reader to find the device polarity, pin assignments, maximum voltage and current ratings and characteristic curves. A technician needs this information to confirm a failed part, test it correctly with a meter, or select an equivalent. Check the device marking on the board against the sheet before relying on the data.
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.