Film Capacitor vs MLCC X7R for a three phase bridge rectifier

MaxHeadRoom

Joined Jul 18, 2013
19,033
Normally these values are used across high microfarad capacity smoothing devices in order to decouple any high frequency.
What is your intention for them?
Max.
 

Thread Starter

Blue_Electronx

Joined Jun 10, 2019
37
I intend to use one of these high voltage capacitors for high frequency decoupling at the output of a three phase rectifier which has 600 VAC line to line. Ripple is not an issue, so I'm not using any smoothing or electrolytic capacitors. Which one would do better, a film cap or MLCC?
 

MaxHeadRoom

Joined Jul 18, 2013
19,033
Although the 360Hz ripple will be low, what are you using unfiltered rectified 600v for that requires HF decoupling?
Polypropylene caps (PP) are usually used in high frequency apps. Such as SMPS power supplies,oscillator circuits and audio equipment etc.
I have also used WIMA MKP4 for HF applications.
Max.
 
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