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Old 25th June 2012, 10:10 AM   #1
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Default Snubber caps with sic rectifiers?

I am changing out some normal rectifier diodes to Cree SIC rectifiers. There are currently snubber caps in place. Do I leave these or remove them? Thanks
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Old 25th June 2012, 10:31 AM   #2
AndrewT is offline AndrewT  Scotland
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if they are capacitors alone with no series resistor then remove them.

If they are a proper snubber with a resistor then leave them in place and try the circuit to see if the existing snubber is doing a good job or even not needed.

The snubber part that damps the oscillation is the resistor. The capacitor simply moves the frequency of the oscillation.
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