6-layer PCB has significant advantages, making it a popular choice for complex and high-performance applications. Some of the advantages include:
Enhanced signal integrity: Due to improved shielding performance and stricter impedance control, the signal integrity of a 6-layer PCB is usually much better than that of a 4-layer PCB. Due to improved isolation, an appropriate 6-layer PCB design can also reduce crosstalk.
The ability to use advanced features: Although most advanced features start at layer 4, using them correctly requires at least 6 layers. The following functions of blind holes and buried holes can be achieved on 4 layers for HDI (high-density interconnect), impedance control, and variable copper weight, but for optimal results, it is recommended to use at least 6 layers.
Higher component density: The more layers that can be wired in the inner layer of a PCB, the larger the space for placing components on the top and bottom layers. In addition, using HDI can also increase the density of components on the PCB.
Flexibility in choosing layers: A 6-layer PCB has multiple combinations of grounding, signal, and power layers, and even for dielectrics, you can choose pre impregnated materials and core boards. Stacking options make it a versatile choice for various applications.
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