Would someone please tell me if it is generally OK to substitute a logic level FET with similar characteristics as the original FET? (ie. IRLZ44E vs. IRFZ44E). I am thinking of using IRL1404 instead of IRFZ44E in an h-bridge for 24V motors. I am attracted to the .004 ohm RDSon vs .023 ohm RDSon. The IRL1404 has a VDS of only 40V vs the 60V of the IRFZ44E. Any opinions ? Thanks. Dan -- http://www.piclist.com hint: To leave the PICList mailto:piclist-unsubscribe-request@mitvma.mit.edu