Reference sheet for the 1N4004 general purpose rectifier diode, a 68.9 KB PDF in the schematic section. No manufacturer appears in the name. The device belongs to the 1N400x family and is rated 400 V reverse at 1 A forward. Technicians rely on the listed forward drop, surge rating and DO-41 drawing when replacing a burnt or shorted diode in a power stage, and can confirm health with a multimeter diode test showing roughly half a volt forward and open circuit in reverse.
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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