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Jr. Member
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How to identify x type capacitor?  Are these better than polyester capacitors? I used polyester type but never used X type ones.

Thanks in advance.
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How to identify x type capacitor?  Are these better than polyester capacitors? I used polyester type but never used X type ones.

Thanks in advance.

"X type" is a safety specification, not a capacitor type.

It means they can be used on mains voltages (110/220V) and will withstand surges, spikes, etc.

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It means they don't catch fire, not that they will withstand all abuse unscathed... 
http://en.wikipedia.org/wiki/Filter_capacitor#Mains_filtering
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