Hey guys, I'm working on a little PCB to make 12V builds a little easier / intuitive. The intent is that you'll be able to solder an XT90 connector onto the board to bring power in, solder on a 4pin mini fit junior to power up a pico psu, a 4 pin cpu jack you'll plug the Pico's cpu connector to in order to switch a MOSFET on, and space for two 8 pin PCIe power jacks, and one 4/8 pin cpu power connector.
https://www.mouser.com/ProductDetail/Infineon-Technologies/IRF250P225?qs=sGAEpiMZZMshyDBzk1/Wi/D7Em5shE8qLkc5hPl0smFrCq3qpcjopQ==
This mosfet can do up to 69A with power dissipation of 347W, would I be correct in assuming that I should divide 347 by 12 to find the maximum amperage this can handle with 12V? How much wattage could I viably push through this thing without a heatsink? And considering 8 awg only does 50A, how can the tiny little leads on this package possibly hold up to such high amperage?
I'd like to use an XT90 connector. It's pretty big and bulky, but it can handle a ton of amperage for high powered builds. Do you think using an XT90 would make a board like this less helpful for the general community, or would most 12V builders be willing to throw XT90 connectors on their power brick of choice if it means they can use a little distribution board to minimize loose components / awkward connections?
Finally, how much temperature rise should I allow on the board? The more temperature rise I allow, the smaller I can potentially make the board.
