Sparkfun states that FQP30N06L is interchangeable with RFP30N06LE. Just ensuring this is true. They seem to be functionally identical for my purposes as far as I can tell, but so does FQP27P06. I know that FQP30N06L and RFP30N06LE are N-Channel MOSFETs and the other one is a P-Channel MOSFET. how does this affect my project or does it?