Types of printed circuit board
layers are laminated together. FR-4 epoxy glass is the imprimat proiectare circuit most common insulating substrate. Flexible-Rigid printed circuits are boards that bring in a unique combination of superior technology a flexible printed circuit made of a thin polyamide of 0.1-0.3 mm with a rigid printed circuit on an FR4 substrate. These printed
Printed circuit board assembly
their legs imprimat circuit proiectare passing through the board and glued to the pads on the other side. "SMD" components are soldered on the same side of the board. A board can use both methods for soldering components. Today PCBs with components mounted only through holes are now less common. Surface mount
Printed circuit board construction
Polyamide for flexible circuits, and a layer of copper foil, laminated to the substrate. Chemical etching divides the copper into separate imprimat circuit proiectare 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