Printed circuit soldermask
can have a coating la circuite imprimate comanda that protects the copper from corrosion and reduces the chances of solder shorting between traces or unwanted electrical contact with possible loose wires. For its function of helping to prevent solder shorts, the coating is called a solder mask. Soldermask is generally green in
Printed circuit board assembly
on the other side. "SMD" components are soldered on the same side of imprimate la comanda circuite 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 is used for components like transistors, diodes, IC chips, resistors and
Printed circuit board construction
sheets. A printed circuit board can have several layers of copper which are almost always arranged in pairs. The number of layers and the designed interconnection between them (vias, PTHs) gives a general estimate of the complexity of the board. Using multiple layers allows for more comanda la circuite imprimate routing options and