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A 6-layer PCB, or printed circuit board, is a type of electronic board that consists of six layers of circuit board material. This type of board is essentially a 4-layer PCB with the addition of two signal layers between the planes.
The six layers of a 6-layer PCB stack up include two internal planes, which serve as the power and ground planes, two internal signal layers, and two external signal layers. The external signal layers are located on the top and bottom of the board and are used to connect components and devices to the internal layers.
