If you want to start from an exxact dimmer, then I would recommend using Schneiders dimmer guide to find LED lamps that actually works, that is, a combination that they have tested.

I have a link to Schneider that does not work any longer... Schneider has apparently joined the nut-case-club that find it suitable to rework their web and destroy all existing bookmarks...

But after some searching I found it again, http://schneider-electric.dimmer-test.com/index.php?id=21 I hope this link works. It also seems that I cannot select another language without also changing the country so I cannot see the products for the Swedish marked in another language... I hope you can use the web browser to translate.
 
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