tracks to match the impedance of the upstream and downstream components. The longer the route or the higher the frequency, the better adaptation is required. When producing un strat circuit imprimat the printed circuit with controlled impedance, the impedance will be controlled by acting on the dimensions of the tracks and the distance
layer of the PCB and has the role of a reference indicator for the components on the PCB. Graphics and text on a circuit board's circuit strat un imprimat PCB are usually printed with a non-conductive permanent epoxy ink. The color is usually white, although other colors are available: yellow, black, blue, red.
shielding or other purposes. Each of the conductive layers is designed with copper tracks (similar to wires on a flat surface) that provide electrical connections on that conductive layer. Another manufacturing process adds plated or metallized holes that allow interconnections between layers. PCBs mechanically un strat imprimat circuit support electronic components using pads for bonding the component terminals