What Is Multilayer PCB?

Multilayer PCB is a circuit board composed of three or more layers of conductive copper foil stacked together. These copper layers are isolated by insulating materials and connected through inner layers or through holes, forming a more complex and high-density circuit wiring design. Multilayer PCB structure is more compact and functional.

Multilayer PCBs are preferred over single-layer or double-layer PCBs primarily due to their ability to reduce space, enhance performance, adapt to any environment, have high reliability, and offer design flexibility to satisfy specific requirements.

The Importance of Multilayer PCB

Firstly, support technological progress. Almost all modern high-tech electronic products rely on multi-layer PCBs for their core control boards.

Secondly, promote miniaturization and intelligence. It is the infrastructure for the lightweight and multifunctional design of electronic products.

Thirdly, ensure signal quality. Accurate power distribution and signal shielding are achieved through multi-layer layout, greatly improving system stability.

Fourth, economy and mass production capability. Although the initial cost is high, it has good economic benefits and repeatability in large-scale production.

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