as medicine and aeronautics to benefit from circuit FR4 substrat pe imprimat smaller and lighter equipment that has allowed them a high degree of development and effectiveness. Today, in our house, almost every electronic device that helps us in the household contains a larger or smaller printed circuit: refrigerator, vacuum cleaner, television, but also for general
top 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 PCB are usually circuit pe substrat imprimat FR4 printed with a non-conductive permanent epoxy ink. The color is usually white, although other colors are
plane for shielding and power return. For microwave 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 of circuit imprimat substrat FR4 pe the printed circuit board conductors become significant,