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High current transistor connections

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dmills:
I just love the marketing fiction on the first page of Mosfet datasheets, 350A from a D2PAK, yea, right!

At least the bipolar stuff sometimes has useful things like SOA curves (But usually only at 25 degrees C case temp).
Personally I favour TO3P, but at no more then about 80W and 5A or so per device, makes cooling actually possible.

The elephant in the room with TO3 is thermal expansion issues, you generally do not want to solder them straight to a PCB (In fact IIRC one of the IPC standards has quite a lot to say about this).

Some sort of sleeve from the likes of mill-max might be suitable, at those currents but I would be taking a long hard look at your design assumptions.

Regards, Dan.

T3sl4co1l:

--- Quote from: IconicPCB on February 15, 2019, 08:33:56 pm ---I have seen some devices packaged in srew downterminal power packages. ON semi has only one such part number. Central semiconductor do not list anything.
Any other part numbers recomendations are welcome..

--- End quote ---

ON Semi has one?  They make a dozen comparable parts for audio amplifier applications!

Shopping on mfg sites is an exercise in futility.  Shop at a supplier with parametric search.  You will find hundreds of variously suitable BJTs and MOSFETs, in all manner of manufacturing-amenable packages! :-+

Tim

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