> He's finding that the temperature rise is higher than he likes and is
> therefore looking for a Mosfet with lower RDSon.
> The circuit operates at less than 30 Vdc and he has at least 10V of
> gate drive available.
> He'd prefer to stay with the current TO-220 package if possible.

> Recap: N-channel Mosfet, TO-220 package, Vds 30V max, Id 30A max,
> RDSon < 3 Milli-Ohms, > 10V gate drive available.

www.digikey.com
Excellent parametric selection guide.

If price is no object (and still only $US3.88 in 1/s)

PSMN1R6-30PL,127
568-4900-5-ND
30V, 100A, TO220
1.7 m.ohm nominal Rdson
http://www.nxp.com/documents/data_sheet/PSMN1R6-30PL.pdf

Even better [tm]  AND cheaper (but may not sell in 1's).
IPP015N04N G
IPP015N04N G-ND
40V, 120 A
1.5 milliohm
$2.33/500
http://www.infineon.com/dgdl/IPB015N04N_rev2+0.pdf?folderId=db3a3043156fd5730115c7d50620107c&fileId=db3a30431689f4420116c474de8f0845


OR

Search Digikey , selecting parameters as required.

               Russell
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