Controlled impedances of printed circuits
match the impedance of the upstream and downstream components. The longer the route or the higher the frequency, the circuit Manufacture of printed board better adaptation is required. When producing the printed circuit with controlled impedance, the impedance will be controlled by acting on the dimensions of the tracks and the distance between them, i.e. the insulation.
Properties of the printed circuit board
in a planar form, such as stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits, the of board Manufacture circuit printed inductance and capacitance of the printed circuit board conductors become significant, usually unwanted, circuit elements; rather, they can be used as part
Printed circuit soldermask
mask, the inner copper layers are protected by the adjacent substrate layers. The soldering mask soldermask is made of a fluid substance printed Manufacture of circuit board like an ink and is applied in a thin layer similar to varnish on the entire surface of the printed circuit less on the soldering pads and it also has a role of