Another reference for the IRF540 power MOSFET, provided as a 117 KB PDF and indexed as a schematic despite being named a datasheet. The manufacturer is not stated in the name. Expect maximum voltage and current, on-resistance, gate charge, switching times and the package pin assignment. It helps when replacing a blown transistor in a supply, inverter or amplifier and when checking gate-source junctions with a meter. Compare its figures with the marking on the actual device, as parts from different makers carry minor specification differences.
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.