Just mentioned in another thread

400A 20V FET
1 milliohm Rdson

        http://www.irf.com/product-info/datasheets/data/irf1324s-7ppbf.pdf

Sensibly priced considering (429A, 20V rated)
$US2.41/1000s Digikey.

If you ever need a truly low Rdson low voltage FET switch this may be 
useful.
While true Rdson will be higher than spec sheet nominal with junction 
heating, it appears it will only increase by about 30% for sensible 
junction temperatures.
Should give 10 to 15 Watt losses and under 0.15 V drop at 100 Amps.

One could almost run a starter motor with this FET [ :-) !!!] as long 
as you properly deal with the inductive transients OK. Avalanche 
rated, but ... .

What DO the mega-battle-bot people use for motor control?



            Russell


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