PDF document of 105 KB for the 40HF series, indexed as a schematic. These are stud-mounted standard recovery rectifier diodes, with reverse polarity versions usually marked by an R in the full part number. The sheet lists voltage classes, surge current, thermal resistance and mechanical drawings. Technicians refer to it when testing a stud rectifier with a meter, verifying whether the stud is anode or cathode and ordering a replacement of the same voltage class and polarity.
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