8-carte de circuit imprimé de couche

What is an 8-Layer PCB?

An 8-layer PCB is a multilayer PCB that provides ample routing space for applications that require multiple power islands. This printed circuit board can help improve EMC performance by adding two planes.

Usage of 8-Layer PCB

The board is usually mounted on compact devices such as motherboards, wearable watches, backplanes, etc.. The increased cost of the 8-layer PCB justifies the increased cost for excellent EMC performance. An 8-layer PCB stackup consists of 4 planes and 4 routing layers connected by 7 rows of dielectric material.

Structure of 8-Layer PCB

The PCB uses a six-layer board with higher EMC performance. The 8-layer PCB is sealed with solder mask on the bottom and top.

Advantages of 8-Layer PCB Stack-Up

The 8-layer PCB stack-up has many advantages that make it an ideal replacement for other circuit board materials. Following are the advantages of these PCBs:

Minimize Fragility

8-layer PCB reduces device fragility, improving overall performance. This helps shield the inner layer from noise, thereby reducing its vulnerability to external forces.

Reduced Radiation

This type of multi-layer stack helps eliminate any radiation that may occur in high-speed applications. Unlike other stack-ups, the 8-layer PCB eliminates EMI radiation.

Lower Operating Costs

8-layer PCB stack-up is a cost-effective option. As for replacement and cleaning, this stack can save you a lot of money. This means that the 8-layer PCB stackup requires low maintenance and is very durable.

Increased Functionality

Choosing an 8-layer PCB will help increase the speed and functionality of the device used. Such printed circuit boards are more reliable and practical in different applications. This PCB has more than 4 layers of conductive material to enhance the signal traces.

Application of 8-Layer PCB Stackup

The 8-layer PCB stackup is the most common type of stackup found in most appliances. This multilayer PCB can be useful in a variety of applications such as: