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MEXICOWANDERER's avatar
MEXICOWANDERER
Explorer
Jul 11, 2014

Sizing MOSFET Heat Sink

12 volt solid state relay. Parallel MOSFETS opto coupler driver.

MOSFETS are 100 ampere 3 milliohm 50 volt. TO220 case.

Ham Operators....

Any ideas for proper heat sink selection? Individual or gang?

My calculations show 4.8 watts dissipation necessary.

This will be a most useful relay for main RV hotel power switching.

Thank You
  • BurbMan's avatar
    BurbMan
    Explorer II
    Jul 11, 2014
    MEXICOWANDERER wrote:
    This will be a most useful relay for main RV hotel power switching.


    Not sure I am following what this relay will do? Maybe call a plumber for Ma's fat hot sink....

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