The classic 4-layer PCB stackup includes two routing layers and two internal planes, one for ground and the other for power.
Adhering to this stackup, including the core and prepreg heights shown, while utilizing FR-4 PCB material and 1 oz copper, the properties of 50 Ohm traces on the routing layers are provided in the table below.
Here is the newest version of PCBWay Multi-layer laminated structure.
