I have seen this note in several datasheets from Kemet AVX and others with no explanation.
Does anyone know the reason for this?
piezo effects causing mechanical cracking? failure mode is a short circuits? not self healing? .
thanks
I have seen this note in several datasheets from Kemet AVX and others with no explanation.
Does anyone know the reason for this?
piezo effects causing mechanical cracking? failure mode is a short circuits? not self healing? .
thanks
Your answer - the X7Rs in question are not X or Y rated:
CAPACITORS FOR RFI SUPPRESSION OF THE AC LINE: BASIC FACTS Fourth Edition
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Contact plant for recommendations. Capacitors may require protective surface coating to prevent external arcing. ..."
(
/Glenn
I think it's the shorted failure mode. If the Y caps fail then ground leakage goes thru the roof. If the X cap fails then the AC line is dumped into the X cap and poof.
A failure mode that does not pose a fire hazard or User hazard (ground leakage) is perfered for obvious reasons.
Cheers
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