schottky and paralleled caps

[jarthel]

There are a lot of power supply circuit out there where the designer has paralleled a small value cap across the diode which I believe people call "snubber" (though the hagtech article on snubber is used in a different manner)

I have read some time ago that this is mostly used in fast/ultrafast diodes and schottky doesn't need such. true or false? doesn't matter?

I tried searching but I can't find the thread.

Thank you for the help

[richie00boy]

Schottky have no reversve recovery to speak of so no snubber is needed.

[MRupp]

Schottky have no reversve recovery to speak of

This is certainly correct but a mute point: Schottky diodes have a capacitance with the accompanying stored charge, and a very fast capacitance at that, so you still have a resonant circuit with your tranny.