The 6-layer PCB is the same as the 4-layer PCB board we have introduced, and it belongs to a kind of multilayer printed circuit board. A 6-layer PCB Board can be regarded as a standard four-layer circuit board plus two additional signal layers. Therefore, a standard 1.6mm 6-layer PCB board stackup is Top Layer and Bottom Layer, 3 Prepreg Layers, 2 internal routing layers, 1 internal Ground layer, 1 internal power layer, 2 Core layers. This stacking method can be Improve the EMI effect to a large extent.
Standard and Typical 6 Layer PCB Stackup
PCB stack-up refers to the copper layer, core board, and PP layer constituting the PCB board. The laminated structure of PCB boards with the same number of layers can meet different user requirements. We need to know that multilayer PCBs, such as 6-layer PCBs, have at least three conductive layers, and each layer is electrically connected through holes.
The benefits of PCB stacking
Multilayer circuit boards can create more complex and space-saving printed circuit boards. PCB stacking has other advantages:
- Maximize the function of circuit board: multilayer circuit board can significantly improve the signal transmission speed and function of electronic equipment so that the circuit board has more powerful functions;
- Improve durability: Multilayer PCB stacking can protect the inner layer of the circuit board from external factors and enhance durability;
- Effectively reduce radiation: the perfect PCB stacking design can minimize equipment radiation, especially in the laminated design of high-frequency and high-speed circuit boards. In addition, if the impedance design is unreasonable, it is easy to cause more significant EMI radiation than ordinary PCB;
- Effectively reduce manufacturing cost: excellent multilayer PCB stacking design can also achieve lower manufacturing cost by placing multiple circuits on the same circuit board
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Effectively reduce signal crosstalk: good PCB stack-up can mitigate the problems of poor impedance and signal crosstalk.
Although the 6-layer PCB stack mentioned above is standard, the standard is not the best. The following is a comparison of three other 6-layer PCB stacking methods.