Soft Recovery Axial Type Rectifier Diodes

I just wanted to give everyone a heads up that Mouser will have quite a few of
these in stock soon. The Vishay SRP100K. 800v/1A axial type. The current data
sheet from Vishay does not say anything about soft recovery, but the original
data sheet from General Instrument does, and I verified with an engineer from
Vishay that the diode design has not changed since the days of GI.

This is a great replacement when modifying gear that has the classic 1N4000
series installed.

I had a bunch of these a while back and they made a noticeable improvement in
everything I put them in. Definitely highly recommended.

Here is the Mouser link: SRP100K-E3/51 Vishay Semiconductors Rectifiers
 
Adcom sourcing :(

I am having trouble sourcing

.1uf/850V Roederstein MKP1839HQ

to go across AC side of each bridge rectifier using multi-stack or piggy-back crimp connector (optional). This information is on the ADCOM GFA 555 POWER AMPLIFIER upgrade modification.

can I use something else?

I also cannot find .1uF/850V Roederstein mkp 1839 hq to go across AC side of each bridge rectifier using multi-stack
 
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The MKP1839 isn't X rated - I wouldn't use it across the line.


He's not talking about fitting them across the mains AC line, he's talking about putting them across the diodes in the bridge reccy to reduce diode switching noise. As a result they don't have to be X rated.
But I've seen poor quality ones in this position causing damage upstream if and when they fail (short) .... if there's suitable fuses upstream then fine.


Not sure why you'd want to spec 850V variants - this in on a ~80V winding .... you're way way over speccing them
 
You can use something else for certain.
When there’s room, I use .1uf K41 polystyrene there with an 18 ohm resistor in series, and another .01uf k41 across the diodes by itself. The .01uf knocks it down to a lower amount of noise, and the .1uf/18ohm finishes it off.

Can search for snubber circuits on this site for more parts selection ideas.