How can MLCC capacitors be rated at multi-kV voltages despite violating clearance/creepage rules between pins?

Thread Starter

SiCEngineer

Joined May 22, 2019
390
Hi,

Just wondering how parts such as CC45SL3JD330JYGNA which is a 6kV rated MLCC through hole component can be rated at 6kV despite the distance between the pins being much less than would be required by creepage and clearance rules. I suppose these parts must be potted, or have some kind of insulating material between their pins, so that they can be used at these voltages?

Best,
SIC
 

du00000001

Joined Nov 10, 2020
100
The trick is to apply conformal coating - or potting. Although the "rated voltage" does not mean that you can permanently apply this voltage.
At the moment I cannot recall which operating voltage might call for a capacitor rated voltage of 6 kV, but might be no more than 600 V DC.
 
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