I’m designing a PCB for an audio amplifier that has the potential to put out 40A (instantaneous), and honestly, I’m out of my comfort zone. The connectors are rated to a min 35A and I’m basically going for big fat traces to take the current load.
All components in the assembly are pass-thru connectors, nothing to overheat besides the board itself.

The narrowest neck is 5.5mm thick (besides certain spots where I have to taper down by the molex)

I plan on using 4oz copper

I read about doing a waves solder to help as well, same goes for buss bars

Trace/Pad clearances are 50mil (plz don’t harass me for using mm and mil)

 

What I’m looking for answers to
1) Is this just dumb? Am I crazy?
2) Any suggestions
3) General high current PCB design suggestions
Proto-types for testing will be done, but I’d rather not spend the money if this won’t work out of the box.
Thanks for the feedback

 

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