FR4 dielectric breakdown voltage

[JohnsonMiller]

Hi Guys,

I am interested in getting some number about break-down voltage in FR4, should we need to worry about 100V? can it cause break-down?

Regards,

[Paul van Avesaath]

Nope! No nead to worries about breakdown there.. Used it plenty of time for 220v. But keep large space between AC pairs and DC..

[robertferanec]

FR4 is often used in all the kind of electronics - including 230V circuits. PS: Saturn PCB can help you to answer more questions (the software is free):