Effect of the copper thickness on the line resistance
In the favourable pool service for 4 layers, either 18µm or 35µm copper is possible on the inner layers (standard: variable layer buildup). The…
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Copper foils
The copper for the outer layers of multilayer boards is applied in the form of copper foil and pressed together with the prepregs / cores. For use with microvias, the copper foil is…