stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits, the inductance and capacitance of the printed circuit board conductors become significant, usually unwanted, circuit elements; rather, they can be used as part of the circuite electronice placute circuit design, as in distributed element filters, antennas, and fuses, avoiding the
higher the frequency, the 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 placute electronice circuite insulation. For a multilayer printed circuit with a specific stack-up, it must
plated or metallized holes that allow interconnections between layers. PCBs mechanically support electronic components using pads for bonding the electronice placute circuite component terminals and electrically connect them using traces of one or more layers of copper sheets laminated on and/or between layers of conductive substrate sheets. A printed circuit board can have several