kalpak dabir wrote:

"Oops quite a bit of confusion going around.
Andy Peters:
ESR is the real cause of heating
www.dearborncaps.com/tech_papers/ppc_6.htm"

Of course you are correct! I^2 * R heating and all that.

Now that I think about it, I would imagine that the current ratings are directly related to the amount of heating the part can withstand.

--a