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Tweaks for systems, rooms and Do It Yourself (DIY) help. FAQ.

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RE: Did you read the data sheet?

Posted by Ugly on May 24, 2017 at 13:03:28:
The parts linked by the OP clearly are UL approved as the data sheet describes the graphics on the package and calls the UL mark a "UL approval mark".

With the X1 rating they are only verified to 2500V impulses but will typically be rated much lower for continuous basis, ie with something like 260 VAC continuous rating.

That you seem to be implying I have no desire to try the biggest capacitors money can buy would be an indication you have no idea what you are talking about. I prefer to take a more scientific approach to filter design and will use whatever makes sense to get the job done.