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Originally Posted by BrianBSL
Did you replace all of the FETs or just the blown ones? What part # did you use to replace them (was it the same as the ones IFI uses)? I've had some trouble finding fets with the same part # as the ones in one of our blown speedcontrollers.
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I believe our electronics group typically replace only the blown ones, then bench test the rebuilt unit.
The FETs used are IRL3103 (International Rectifier) or an equivalent like FDB6035AL (Fairchild Semiconductor) for our competition victors, but close matches have been used for ones on the practice or older robots.
Digi-Key
http://www.digikey.com/scripts/DkSea...321579&Site=US
$1.63 individually or $1.16 ea. for 10
http://www.mouser.com/index.cfm?handler=displayproduct&lstdispproductid= 199954&e_categoryid=277&e_pcodeid=51229 Mouser has them for $1.19 each if ordered individually or .90 each for 25