Thanks for the suggestions guys.

I'm designing the project to use a 12v DC source to power some miniature lights. The problem is that this would be dependent on the end user's own installation, so you could have upwards of 16-25 amps @ 12v. The 12v supply is switched by 16 MOSFETS which in turn are turned on/off or dimmed via the control circuit ( which runs at 5v taken from the 12v input and currently regulated via a linear 7805 regulator with associated capacitors). So I would assume I would not only need the protection to cover the PIC and associated IC's, but also the 16 FETs and thus need to handle the high amperage ?

Any suggestion for the FET to use in the link Tabsoft provided ?