MOSFET Heat Sinks

Discussion in 'General Electronics Chat' started by Tobias, May 24, 2009.

  1. Tobias

    Thread Starter Active Member

    May 19, 2008
    Thank you for the help in getting the P-Channel MOSTFETS going. This deal is going to power solenoids that will require around 60amp initially to open. They are working against 1000psig. The solenoids will be only open for around seven seconds at the most.

    I am designing the final board and would like some input on heat sinks. I don't know I will NEED the heat-sinks but I am thinking it wouldn't HURT to have them in the board. A friend of mine suggested using a thermal conductive potting compound instead of a wing style heat sink.

    Any suggestions?

    Also since I have your attention. Any recommendations on track width and copper thickness for the MOSFETS?

    Thanks and happy Memorial Day
  2. bertus


    Apr 5, 2008
  3. Bernard

    AAC Fanatic!

    Aug 7, 2008
    With the FET you were working with 22A, 100V, R D-S of .125Ω, power los would be about 60 W; with 60A @ .1Ω R D-S, power is a whopping 360W.