Here is a pcb for a design for a 3 port passive ethernet hub. It is designed for 10Mbit half duplex. so it will be not great for modern high bandwidth systems. but for low noise it would be good. Diode selection is up for debate. Im just going to try some 1N4148 in a SOD-123 package. Routing is not optimal but on jlcpcb 7628 stackup it should be not too far from 100Ω.
i donno if i got it right.
i donno if i got it right.
