/diy/ - Do It Yourself

>>1413421
Vgs(th) "Gate-source threshold" voltage or similar is the minimum to start turning on. Gate current will be negligible - the unique point of the MOSFET is that it has an insulated gate, so it's charge-controlled rather than current-controlled. Vgss is the maximum voltage you can apply before the insulation fails.
Vdss(br) "Drain-source breakdown" or similar gives you the maximum voltage you can apply across the D-S on the MOSFET before it starts conducting regardless of the gate voltage.
Pd is power dissipated. Max current is Id.

It sounds like you might want to read up a bit more on MOSFETs - the Art of Electronics chapter is pretty good. If you're just looking to switch a big load on and off (at low-ish frequencies) without too much complexity, SSRs or even just normal relays are a good alternative. What's the application?