be mostly solid copper to act as a ground plane for shielding and power return. For microwave printed circuits, transmission lines can be laid soldermask out in a planar form, such as stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits,
in designated locations on the outer layers by gluing. provides reliable electrical connections between the component terminals in a controlled manner according to a predetermined scheme. Printed circuits are widely used in many fields: Consumer goods Military Aerospace Industrial soldermask Medical Naval The unprecedented development in recent years of
Screen printing is used to render useful information on the PCB board that can help users during assembly. It is used to mark component values, part numbers, test points, polarity, etc. Screen printing does not influence the printed circuit and the possible problems that may appear may be slight discolorations due to soldermask the high