Datasheet for the JQC-3F relay, the T73 type, a small sugar-cube style PCB power relay commonly found in appliances, control boards and hobby modules. The PDF lists coil voltage options, coil resistance, contact ratings, switching configuration and the pin layout with dimensions. Technicians use it to measure the coil and confirm it matches the expected resistance, to identify common, normally open and normally closed pins, and to select a replacement with the same coil voltage and contact rating printed on the relay case.
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 @datasheet. Enginerys does not host this file.
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