That's FANTASTIC of you, Jerry.? ?Much slicker with the online stores than I had been.? ?

I ordered 8 of the IPP80 version just to have a few more around the house since there are hundreds of them -- BUT THEY WONT LAST LONG FOLKS!!

I also updated the Construction Manual with the availability information, giving the link to the available part.??

See:??? ?(now updated with a through-hole? part from your list)?

Using the lowest possible Rds-on just makes this so so much easier on the builder.? ?The losses in our existing units through the MOSFETS are actually lower than through the crimped connectors etc in our powerpath.? ?I actually measured losses in fuses, fuse connectors etc that were larger than the losses in the MOSFETS!? ?

That was very nice of you to do that search and point people to better choices!

Thanks,

Gordon Gibby KX4Z

On Mon, Sep 5, 2022 at 9:31 PM Jerry Gaffke via <jgaffke=[email protected]> wrote:

Here's a quick search on Mouser for an enhancement mode PFET with an Rds of 5 mOhms or less and a continuous drain current of 50 Amps, must be in stock:


A couple TO-220 parts, either would work:



A bunch of surface mount parts with a big heat dissipation pad on the bottom.
Those are usable for the hobbyist with a heat gun and some solder paste.
Or could dead bug them, run a strip of copper over the top for heat dissipation.

Jerry, KE7ER

On Mon, Sep 5, 2022 at 05:31 PM, Gordon Gibby wrote:

Irf4905 @ .020 ohms —. Put two of those in parallel and you’ll get .010 ohms which means you can run 10 A through it and have a dissipation of only one watt. ?

?

Hopefully once people start returning our economies to normal, better and better MOSFETs will become once again available. ??

?

Right now it’s a bit difficult.? I’m sure Ashhar had to deal with a lot of these problems!!