Many people are confused how many layers PCB are suitable for their product, and different industries have their own requirements on layers of circuit card assembly based on PCB features. The following we will introduce the PCB with different layers in details for you.

Single-layer boards

First, the one with the least layer and the lowest manufacturing difficulty is the single layer board ( also named single-panel boards). Single-layer plates are characterized by only one side having a wire. Because this printed circuit assembly has fewer functions and lower cost, it can only be applied to simple and low-cost circuit applications, which is not common pcb manufacturing.

Double Layer Boards

As it is obvious from the name, the double-layer board has two sides and is distributed with wire routes, which makes the circuit more flexible and achieve more functions, so this pcb assembly is currently the most widely used. At the same time, the use of appropriate leads and through-hole connections in the middle of the double-layer pcba can make the signal better transmitted and the circuit connection more stable.

Quad Layer Boards

Adding an insulating layer in the middle of two double-layer pcb board manufacturer can further form a Quad-layer boards. More layers allow the PCB board to have a denser wiring and a more stable signal, so that Quad-layer boards can be used in more complex functions and more demanding products. And because the insulation layer is added, the Quad-layer circuit board manufacturing can be subjected to less electromagnetic interference, therefore, it is popular in the fields of network equipment, computer hardware and industrial control.

Six-layer boards

Adding a single-layer PCB on both sides of the four-layer PCB can get a six-layer printed circuit board assembly, due to the increase in the number of layers, more wiring design can be realized, and the six-layer PCB board can be more effective in reducing product electromagnetic interference and improving signal transmission speed, so pcb board assembly is often used in high-speed communication and industrial automation and other fields to enhance signal and EMC quality.

Eight-layer boards

The eight-layer PCB board is on the basis of six layers, and then add single layer board above and below, so the wiring layer and the reference plane layer both have 4, which enhance the signal quality and ensure the EMC characteristics. So eight-layer board is usually used in communication base stations, medical equipment, high-performance computers and aerospace and other fields which needs high quality.

Ten-layer boards

The number of PCB layers of the ten-layer board is relatively large, and design is more complex. Correspondingly, ten-layer pcb and assembly is more suitable for products with higher requirements and greater difficulty, such as: smart phones, high-end electronic equipment and data server board,. Please also note that due to its complexity, the ten-layer plate is usually made of a mixture of flexible and ordinary materials to achieve better product results

Conclusion
The above several layers of pcb board fabrication have their own suitable areas, but in general, the number of layers will greatly affect the PCB's routing ability, signal integrity and EMC characteristics. After understanding these, you can choose pc board assembly according to your needs. For any inquiries or requirements of the circuit card assembly, manufacturing, please don’t hesitate to contact us for more information. As a reliable pcb assy manufacturer, Shanghai XW With more than decade experience in the printed circuit assembly industry, we will customize the most suitable, advanced PCB and PCBA service for you.