Differents betw. X1_X2 \Y1_Y2 caps

[Stream]

Can anyone describe diferences between X1 and X2 class caps (also Y1 and Y2)... Where should I use X1 and where X2 ?

Someone shared link to one very usefull site about power supply capacitors, but after I change my browser - I lost this link... I didnt remember Nema of that site (it was just bookmarked) , but maybe someone know what I'm talking about, please share link once again

[Rainwulf]

They are basically classes of capacitors designed for AC use on the main power line.

You are supposed to use X2 only on mains lines, its because they are flame retardent, and self healing.

Here is some info on them.
http://my.execpc.com/~endlr/line-filter.html

[Ragnwald]

X capacitors, where a breakdown of the capacitor due to lightning or switching transients would not lead to an electric shock hazard and Y capacitors, used in applications where capacitor breakdown could cause a dangerous situation.
They are both flame retardent, and self healing.

[Stream]

Ragnwald, Thank you, but I know differences between X and Y... But i need X1 vs X2 and Y1 vs Y2.


Rainwulf, Thanks! It's that link

[Stream]

Ok.
X2 (Y2) has lower safe-range, but even this range is much higher, than needed in every Audio-apllications
Right?

[Ragnwald]

Right