Protecting signal integrity is probably the major worries in PCB design, Particularly with high-speed signals. Inside a six-layer PCB, signal integrity may be preserved by: Place power and ground planes adjacent to each other to create a reduced-impedance power distribution network. Issues in Rework: Because of the flatness and the https://10-layer-2-order-hdi-mult95059.theblogfairy.com/30424466/details-fiction-and-four-layer-tin-spraying-module-power-pcb