4A current application

Other Hardware General Electronics
2

  1. the crucial phrase is "logic level" - and an on resistance(*) quoted for a Vgs of 4.5V (or 5.0V). Don't be misled by the threshold voltage.

  2. Ones with a TO220 case: solder via stripboard to suitably heavy wires, if necessary bolt to heatsink with TO220 heatsink mounting washer (conducts heat but not electricity - this is vital if shared one heatsink).

Try and find better MOSFETs than those, they are poor performers by modern standards - aim for an Rds(on) of less than 0.02ohms and you wont need heatsinks for 4A. Choose lower voltage parts such as 20 or 30V, and the on resistances will be lower than say a 100V part, in general.

(*) Rds(on)