Controlled impedances of printed circuits
a multilayer printed circuit with a specific stack-up, it must be taken into account that the internal tracks with controlled impedance are shielded placa electronica by copper planes and for this reason only the thickness of the insulation between layers and tracks and the track thickness must be
Properties of the printed circuit board
to act as a ground plane for shielding and power return. For microwave placa electronica printed circuits, transmission lines can be laid out in a planar form, such as stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits, the inductance and capacitance
Printed circuit board silkscreen
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 placa electronica circuit and the possible problems that may appear may be slight discolorations due to the high temperatures