A printed circuit board (PCB) is a laminated sandwich structure of conductive and insulating layers. PCBs have two complementary functions. The first is to affix electronic components in designated locations on the outer layers by means of soldering. The second is to provide reliable electrical connections (and also reliable open circuits) between the component's terminals in a controlled manner often referred to as PCB design.

  • Easy to integrate: Modules are fast and easy to integrate because they are pre-built and require no calibration or electronics.
  • Modules are a plug-and-play solution that provides a corrected, usable image for the system right out of the box.
  • In terms of manufacturing, modules are easier to integrate into production processes than components.
  • Lower product development costs: Making products from modules helps manufacturers save on development costs as compared to developing products integrating individual components.

Each of the conductive layers is designed with an artwork pattern of conductors (similar to wires on a flat surface) that provides electrical connections on that conductive layer, while another manufacturing process adds vias - small and precisely located holes that are drilled through the laminate and then plated with copper. The vias are the electrical interconnection between layers that are otherwise insulated in the laminate structure and this allows a third dimension of connection between conductive layers in a controlled manner that is both reliable and cost-effective for mass production of electronic products.

Multilayer PCB

Multilayer PCB is a circuit board that has more than two layers. Unlike a Double-Sided PCB which only has two conductive layers of material, all multilayer PCBs must have at least three layers of conductive material which are buried in the centre of the material. Alternating layers of prepeg and core materials are laminated together under high temperature and pressure to produce Multilayer PCBs. This process ensures that air isn't trapped between layers, conductors are completely encapsulated by resin, and the adhesive that holds the layers together are properly melted and cured. The range of material combinations is extensive from basic epoxy glass to exotic ceramic or Teflon materials.

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