At 12:38 PM 07/01/2014, you wrote: Given the part that Sergey recommended ( http://www.fairchildsemi.com/ds/FQ/FQP13N06L.pdf ) I believe I'm well within the limits based on a load of under 1A. I might be well under 1A though. At 5Vgs the datasheet is quoting an Rds(on) of 0.11R, but that's with an Id of 6.8A. That should be fine. >The part referenced above has a max Vds of 60V. If I end up switching >5V, it'll be rated for 12 times what it's actually switching. Too far? Nah, not if you're going for beefy and have space. If you have a lot of inductance going to the LEDs and switch too quickly, you might even need it. This would be the sort of (dual) MOSFET where you would need to=20 sharpen your pencil a bit: http://www.fairchildsemi.com/ds/FD/FDC6401N.pdf --sp --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .