Double-layer PCBs, also called double-sided PCBs, can be regarded as the most widely-used type of PCB inPCB Assembly field, allowing for the routing of traces around each other by jumping between a top and
bottom layer through vias. Different from single-sided PCBs that have only one conductive layer, double-layer PCBs have two conductive layers that are placed on both sides of substrate and so are components.
Therefore, advantages of double-layer PCBs can be summarized into the following aspects: • An increase of circuit density; • Relatively low cost; • Reduction of board size.
Owing to its benefits, double-sided PCBs have covered a wide range of applications including power supplies, industrial control, control relays, converters, UPS system, LED lighting, hard drives, printers, mobile phone system, power monitoring, test equipment, amplifiers, traffic systems etc.
