or Polyamide for flexible circuits, and a layer of copper imprimate circuite confectionare foil, laminated to the substrate. Chemical etching divides the copper into separate conductive lines called tracks or circuit paths, pads for connections, metallized holes (vias) for passing connections between layers of copper as solid conductive areas for electromagnetic shielding or other purposes. Each of
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 circuit design, as in distributed element filters, antennas, and fuses, avoiding the need imprimate confectionare circuite for additional separate components. High Density Interconnect (HDI) PCBs
electronic components is called a printed circuit assembly, printed circuit board assembly, or PCB assembly (PCBA). In informal usage, the term "printed circuit board" most commonly means "printed circuit assembly" (with components). Components are circuite imprimate confectionare generally soldered to the PCB both to connect them electrically and to fix them mechanically. Printed circuit