Quote:
Originally posted by bigben2k
Switch the Drain and Source.
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That will probably work. The specs on the datasheet won't be too relevant, but the IRF1404 is major overkill for the job, so it's not likely to be a problem. (The fact that you aren't switching the MOSFET off and on repeatedly, also helps in making a lot of the specs unimportant.) Only testing will tell.
You need to rethink the use of the 15V zener diode. Its purpose is to protect the gate of the MOSFET from blowing out under transient conditions.
Absolute Max : Vgs = +/-20V