Sean,
the standard answer from IPC for general purpose (Epoxy E-glass) FR4
(is there such a thing today?)is 39,400 Volts/mm (approx. 62,500V at
0.062). This is derived from a test using 0.125mm and they warn that it
should not be considered linear for high voltage applications with
A useful guideline is to look to the various standards for conductor spacing
to yeild a safe voltage standoff. A reasonable minimum of 8mm for 2500V
standoff between conductors on the same side of the board will give you
a good chance to avoid tracking or arcing along the surface due to
normal
Sean,
I would also like to point out that there is some derating for frequency,
although I don't have a reference for what the factor is.
High voltage is not very well behaved at high frequencies, and you'll need
to avoid sharp corners at all costs.
I have personally seen less than 50kV @
