>Of course for most general purpose low frequency switching applications,
>the newer types are wonderful, especially as you get up in current into
>the hundreds of mA or A.

Your saying that, this lunchtime I was perusing the latest issue of 
Electronics Weekly, where there is a press release from STMicroelectronics 
for the STV250N55F3 Mosfet.

250A, 1.5mohm PowerSO-10 package rated for 300W @ 25C.

Suggested uses high current electric traction applications such as fork lift 
trucks, wheelchairs and electric bikes ...

Impressive looking package in the pictures.

Press release at 
http://www.st.com/stonline/stappl/cms/press/news/year2008/p2308.htm

Data at 
http://www.st.com/stonline/stappl/productcatalog/app?path=/comp/stcom/PcStComRPNTableView.onClickOfRPNLink&code=185326 
(link from press release)

Hmm $2.50 ea @ 10k quantity. Tempted to get some samples, just to have the 
chunky package kicking around  ...

No curves on the datasheet but at a Vgs threshold of 4V max, and Vgs = 10V 
to get <2.2 mohm, it would have a viable on resistance run at logic level 
input. 

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