Flexible PCB manufacturer：What is Copper layer in a PCB
As Flexible PCB manufacturer knows that, the copper layer is the first layer on a 2-layer PCB stackup. It is 0.014 in thick, weighs a bit over an ounce, and is the signal layer. Its effect is good on a board with a 0.062-inch final thickness. However, the thickness may vary depending on the parameters used in the board’s fabrication.
The copper layer is an important part of the PCB. It has several functions and is present in different shapes and materials. It helps the board receive appropriate current flow and controls the loss of power on the circuit board. In some cases, copper is present on two sides of the substrate. Experts recommend four-layer PCBs to prevent problems with these electromagnetic effects.
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The other three layers of a PCB include ground planes, power planes, and routing layers. The power plane provides the circuit with a clean power source, while the ground plane serves as a common ground for all the components. Finally, the top layer serves as a signal routing layer and connects the components. You can switch this standard 4-layer stack-up depending on the design specifications and the signals on the board.
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