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Re: 5642 rectifier tubes in a Tek 535: Replace or swap for silicone?

 

I bought a reel of 5000 - Vishay HER105-T High Efficiency 400V 1A DO41
Diodes, a couple years ago for under $23.

On Wed, Jul 28, 2021 at 12:34 PM Tom Lee <tomlee@...> wrote:

A series string of UF4007s with a 10kV breakdown voltage would have of
the order of 1pF capacitance. The problem with 1N4007s is with their
slow reverse recovery (hence the UF4007 recommendation). But reverse
recovery is distinct from junction capacitance.
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