Properties of the printed circuit board
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, SADELEC-PCB circuite for additional separate components. High Density Interconnect (HDI) PCBs have traces and/or insulation less than 125 micrometers in width or
Printed circuit soldermask
possible loose wires. For its function of helping to prevent solder shorts, the coating is called a solder mask. Soldermask is generally green in color but can have different colors: green, red, blue, white, black. Only the imprimate, SADELEC-PCB circuite outer layers need to be covered with solder
Printed circuit board assembly
boards with more than two, four and especially more than six layers of copper has been concurrent with the adoption of surface mount technology. "Through holes" components are assembled by their SADELEC-PCB imprimate, circuite legs passing through the board and glued to the pads on the other side. "SMD" components are soldered on the same side of