I tried laying out a tiny little USB switch on a JLCPCB board with .154mm traces and got about 50% mortality. Could be partly that I'm not good at PCB design bu

I tried laying out a tiny little USB switch on a JLCPCB board with .154mm traces and got about 50% mortality. Could be partly that I'm not good at PCB design but clearly there's a _lot_ of margin you need to leave.