Hi guys-
Using MOSFETs as a switch, I'd just like to make sure my thinking is correct so I don't blow anything up. I am switching off and on relays, and the MOSFET will never see more than 500mA. I want to make sure I protect the part thermally but I don't see how the MOSFET will actually dissapate any power other than I^2 * Rds(on). Am I missing something and is a heatsink advisable if this stays well below 1W?
Thank you in advance!
Brian
Using MOSFETs as a switch, I'd just like to make sure my thinking is correct so I don't blow anything up. I am switching off and on relays, and the MOSFET will never see more than 500mA. I want to make sure I protect the part thermally but I don't see how the MOSFET will actually dissapate any power other than I^2 * Rds(on). Am I missing something and is a heatsink advisable if this stays well below 1W?
Thank you in advance!
Brian