Hi all,

I am currently involved in a project that requires
a continuous DC current of 100A (200A peak) flowing
through a number of parallelled MOSFETS on a PCB.
Apart from using ultra wide traces and 105um powerboard,
I need to solder 4x12mm copper rails of 15cm long
on these traces.

I have seen this technique used in a number of power
applications in the past. But I was wondering how this
copper rail can be soldered reliably on the PCB.
Can it be done by a huge soldering iron? Or is hotair
soldering an option here?

Perhaps the rail can be soldered onto the PCB by using
solderpaste and a very big current through the copperrail
heating it up due to I^2xR losses. Although I am aware
of the huge currents involved in heating up a 48 sqrmm(!)
copperwire.

Any ideas?

Thanks!

Daniel...

--
http://www.piclist.com hint: To leave the PICList
mailto:piclist-unsubscribe-request@mitvma.mit.edu