A 9 oz mixed-copper thickness budgetOne-dimensional thickness screening at a full copper-overlap envelope. Positive remaining space would still not establish resin fill, dielectric approval or pressed thickness.A 9 oz mixed-copper thickness budgetIllustrative overall 1.60 mm includes the entered 0.04 mm coatings.Copper: 315 + 35 + 35 + 315 = 700 µmAvailable for dielectric: 1600 − 700 − 40 = 860 µm700 µm copper860 µm remainingIf the required dielectric total is 1000 µm, the shortfall is 140 µm.³Ô¹Ïtv engineering illustration · conceptual, not to scale · examples are not acceptance limits