Misfit Power Loss

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looking @ 30a mosfet sparkfun fq30n06l states that
rdson =0.035 ohm ( ypical)  @ vgs=5v , id = 16a

am wrong in calculation power loss in mosfet i2r = 16 x 16 x 0.035=8.96w!!!!

so if 12v 16a supply (192va) losses 4.5%

your calculations right.    you'd need heatsink @ 16a.     it's rated 75w (and need big heatsink that).


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