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Stabistor diode STB523 - anybody got a datasheet?
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Wallace Gasiewicz:
 Maybe the part might be here?

https://www.eevblog.com/forum/buysellwanted/fs-new-test-equipment-repair-parts-hp-agilent-tektronix-fluke-etc/msg1238752/#msg1238752
floobydust:
1901-0460 replaced by 1901-0468 Microsemi Corp for HP P/N: DZ890505C but I got no farther.
Wallace Gasiewicz:
How about this reference?
Same as ecogeek

1901-0460    01973       STB523-A

01973  is  GE Co. Semiconductor Prod. Dept.

I think you already know this but the information is from this group, which I have found to be quite helpful:

HP parts list on Groups.io   HP-Agilent-Keysight-equipment,    maybe they could help further
5065AGuru:
The HP 5065A also uses a 1901-0460 in the lamp exciter.
I have a replacement stock of the 1N4830 that is equivalent.

Cheers,

Corby
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