Kind friends
I have encountered an unanticipated (albeit intriguing) difficulty in the course of attempted characterization of several unmarked rectifier diodes salvaged from working Allegretti units...
Granting appropriate current limiting, I expected {even} non-avalanche Si rectifier diodes to 'survive' reverse breakdown and, indeed, operate much as 'Zeners' over a portion of their curves --- Thus it seems theory and reality are, once again, 'at odds' inasmuch as said diodes are frequently damaged (altered) by maximum reverse currents of as little as 20 uA and, often, instantly destroyed above 200 uA
At this point I am more interested in understanding the described phenomenon than identification of the rectifiers! -- Any insight, thoughts and/or wild guesses will be greatly appreciated!
FWIW - based upon appearance and identity of application - I believe said devices to be CEHCO 301R100
Epr=1kV
If = 300A
Ef @ 10A = 300mV
Very best regards
HP
Specimen of unknown diode
I have encountered an unanticipated (albeit intriguing) difficulty in the course of attempted characterization of several unmarked rectifier diodes salvaged from working Allegretti units...
Granting appropriate current limiting, I expected {even} non-avalanche Si rectifier diodes to 'survive' reverse breakdown and, indeed, operate much as 'Zeners' over a portion of their curves --- Thus it seems theory and reality are, once again, 'at odds' inasmuch as said diodes are frequently damaged (altered) by maximum reverse currents of as little as 20 uA and, often, instantly destroyed above 200 uA
At this point I am more interested in understanding the described phenomenon than identification of the rectifiers! -- Any insight, thoughts and/or wild guesses will be greatly appreciated!
FWIW - based upon appearance and identity of application - I believe said devices to be CEHCO 301R100
Epr=1kV
If = 300A
Ef @ 10A = 300mV
Very best regards
HP
Specimen of unknown diode
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