Single-part datasheet for the 1N5820 Schottky barrier rectifier, the 20 V member of a 3 A family, held as a 74.8 KB PDF in the schematic section. No maker or revision is given in the name. The document lists forward drop, leakage, surge current and the case outline. In repairs it helps confirm a suitable replacement for a failed low-voltage rectifier in power supplies or chargers. Any PDF reader opens it. Compare the printed part number on the diode before trusting the values.
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.