scheme. Printed circuits are widely used in many fields: Consumer goods Military Aerospace soldermask Industrial Medical Naval The unprecedented development in recent years of all fields of activity has led to a revolution in the types and models of printed circuits. Technology has penetrated more and more areas
The resistance of copper foil tracks, determined by its width, thickness and length, must be small enough for the current the conductor soldermask will carry. It is recommended that the power and force paths be larger than the signal paths. In a multi-layer board, an internal layer may be mostly solid copper to
the better adaptation is required. When producing the printed circuit with controlled impedance, the impedance will be controlled by acting on the soldermask dimensions of the tracks and the distance between them, i.e. the insulation. For a multilayer printed circuit with a specific stack-up, it must