for shielding and power return. For microwave printed circuits, transmission lines can be laid out in a planar form, such Placa prototipare pcb as stripline or microstrip, with dimensions carefully controlled to ensure consistent impedance. In RF and fast switching circuits, the inductance and capacitance of the printed
a thin layer similar to varnish on the entire surface of the printed circuit Placa prototipare pcb less on the soldering pads and it also has a role of antioxidation of the copper traces. Being a substance with a high degree of electrical insulation, the soldering mask offers the printed circuit the possibility of having a high density
in the internal layers compared to the two-layer board, and often prototipare pcb Placa part of the internal layers are used as a ground plane or power plane, to achieve better signal integrity, higher signaling frequencies, and better power supply decoupling. In multilayer boards, layers of material are laminated together in an alternating sandwich: