What cause burned FET driver and FETS on 9920

[BrianG]

Where are you putting that cap? Is it for the receiver or the ESC itself?

If for the receiver, you don't necessarily need top quality caps. There isn't much current drawn so low-ESR types are a little overkill. They won't hurt, but they won't much, if at all. I've used RadioShack ones on two vehicles for quite a while without any negative effects.

If it's for the ESC, you'll need part# 6718480 or higher since you need at least 35v.