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Popular rectifier diodes for small currents (0.1 A to 0.3 A depending on the type) and maximum reverse voltage from 50V to 400V. I managed to find diodes from the first series, but in the 60s the diodes were available in electronics stores, but already in a different housing. One of the diodes has no markings, the other one shows DZG7, which means it is the highest voltage diode. Unfortunately, one of the diodes is mechanically damaged.
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