TO220--thin leads--high current--How?

vkj · 2010-05-02T13:59:14+00:00

I have a somewhat basic question. I am using a high current MOSFET(IRF3205) rated at 80A cont. Acc to convential wisdom for a copperconductor at about 4A/sqmm ct. dens. the conductor shd be about 20 sqmm,while the TO220 lead is a small fraction of that. At 80A this thin leadwould probably fuse.How does one actually use this package?Thanks,vkj --------------------------------------- Posted through

May 02, 2010 65 Replies

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langwadt 16 years ago

MO.

could be R11 it boils at 23.7C at 1bar, latent heat of evaporation(kJ/ Kg) about 1/10 of water. and ~50% heavier than water.

but it is one of the "bad boys"

-Lasse

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Grant 16 years ago

Registration for downloads is free, as are the downloads.

Isn't that just watts by the thermal resistance for some temp rise?

Grant.

http://bugs.id.au/

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krw 16 years ago

I didn't see how. I'll try again in the morning.

Plus ambient, sure. Now tell me what the thermal resistance of my board is.

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JosephKK 16 years ago

340.

junction

IMO.

lead.

way?

absurd

boards"?

It sure looks like a free download to me without having tried to get it. I have no current need and have enough standards that i will pay for to buy. e.g. IEEE 1584.

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