Cracked/exploded Evox Rifa Metallized Paper X2 Capacitors - What Deficiencies?

[wrenchone]

Those old Rifa caps are metalized paper - they can be replaced with either polyester or polypropylene units of equivalent value. Appropriate safety rating is probably X2. The usual distributors should have them. Be generous with the voltage rating, and they will last longer.

 

[bohrok2610]

BTW I've hade many mains rated X2 capacitors lose their capacitance in triac controllers due to corona effect.
The failure mode is described e.g. here.

 

[bucks bunny]

BTW I've hade many mains rated X2 capacitors lose their capacitance in triac controllers due to corona effect.
The failure mode is described e.g. here.

These are the "self-healing" X-cap while these old Rifa were the "self-exploding" caps.

 

[tiefbassuebertr]

It looks fine but shows as out of stock for me. These caps are not critical apart from having to be safety rated.

You can just snip the old one out for now, it doesn't need it to work. M can mean 20% tolerance (not critical here) and MP could be Metalized Polyester (the type).

https://cpc.farnell.com/vishay/bfc233620103/capacitor-class-x2-0-01uf/dp/CA07137

what about the currently available "RIFA" branded successors from KEMET regarding reliability and life time ?
https://electronics.stackexchange.com/questions/437683/rifa-pme271m547-replacement

 

[bucks bunny]

I suspect current Rifas/Kemet are better know, but why should I test them as long as I trust Epcos.