PCB Tech - About PCB circuit board multi-layer pool introduction

Circuits with more than two layers are called multilayer circuit boards. Therefore, this means that the minimum number of layers of a multilayer circuit board is 3. Laminating materials together is not easy, but it is necessary for multi-layer pools.

There should be no air trapped between PCB multilayer pools. In the manufacture of multi-layer pools, Eagle circuit board design software is indispensable.

This process is very complicated, as usual, start with the preparation of the schematic diagram. Then use the editor menu on the Eagle software to edit the schematic.

You may be wondering why most of the circuit board layers are uniform. It should be noted that preparing even-numbered layers is more cost-effective than preparing odd-numbered layers. Therefore, this is the reason for the uniformity of the layer.

1. Multilayer circuit board

In the manufacture of multilayer circuit boards, both the core material and the prepreg are used to manufacture the layers. Prepregs are those uncured materials, which means they are malleable.

Then the prepreg and the substitute material of the core material are laminated together under high temperature and high pressure to make the prepreg a material. After cooling, the layers are connected together to form a hard and strong multilayer board.

Please note that multi-layer circuit boards have a wide range of advantages, including:

Increase flexibility

Higher assembly density

Controlled impedance characteristics

small volume

Has an EMI shield

It eliminates the need for interconnecting wiring harnesses, thereby reducing overall weight

2. Multi-layer pool process

Multiple PCB manufacturing processes involve the use of Eagle software to design circuit boards. This is a complicated process, starting from completing the schematic. The schematic diagram is edited through the editor menu through the Eagle software.

3. Multi-layer pool

After the schematic is designed and drawn, the next thing to do is layout; this can be done by importing the size of the printed circuit board and uploading it to the software.

If you use Eagle software, you will have the opportunity to choose a suitable grid to help each circuit board layer overlap. This can be done with a button that routes each layer separately according to your needs.

Or, you can use Eagle software to automatically create a multi-layer pool of circuit boards. However, if you choose this technique, it is necessary to cross-check components, text, layers, and dimensions.

Then you should use the check rule option to evaluate the final layout.

4. Multilayer circuit board

Multilayer printed circuit boards have become the core of the world's electronic products. They are the basic functions of components and wiring; this makes new circuit boards more advanced and complex.

It provides end users with advanced flexible options and grotesque varieties to choose from. The circuit boards used in simple electronic products consist of a single layer, while the complex circuit boards used in computer motherboards are multilayered; this is why they are called multilayer circuit boards.

It should be noted that advanced technology enables manufacturers to significantly reduce the size of circuit boards.

A multilayer circuit board is a circuit board made of at least three layers of copper foil. They look like several single-sided or double-sided circuit boards, glued together with thermal and protective insulating glue. These two layers are usually placed on the surface side of the circuit board.

The electrical connection between the layers is achieved through vias such as buried holes and plated through holes; this leads to a generation of complex circuit boards on the market that have different sizes.

Multilayer circuit boards were discovered through changes in the electronic world. Their continued use and function in the modern electronic world make them more complex and sophisticated.

Initially, circuit boards had its problems, including crosstalk, capacitance, and noise. Therefore, the manufacturer must impose specific constraints to limit the problem.

Design considerations mean careful design of circuit boards that can achieve high levels of performance, so double-sided circuit boards and so on. It is this understanding that led to the discovery of multilayer circuit boards.

It allows multi-layer circuit boards to be packaged into small sizes to meet the growing demand for electronic products.

Modern circuit boards have various layers ranging from 4 to 12 layers. The number of papers is even to reduce problems such as warpage associated with odd-numbered layers.

In addition, it is cost-effective to produce an even number of layers compared to building a different number of layers.

In addition, most modern devices, including smartphones and mobile devices, use 12-page circuit boards. Some manufacturers can make about 32 layers of circuit boards.

Please note that although manufacturing multilayer circuit boards requires a lot of labor and cost, they are becoming more and more important in the modern world.

The reason for this is that they bring many advantages over double-layer or single-layer circuit boards.

5. Advantages of multilayer PCB

They are small; this is the best feature of multilayer circuit boards. They are smaller than single-layer or double-layer circuit boards, which are of great benefit to current trends.

They are more compact and sturdier, and are widely used in laptops, smart phones and tablets. Lightweight structure.

Smaller circuit boards are lighter in weight because they do not use the multiple connectors required to interconnect them to double-layer and single-layer circuit boards. This increases the mobility of the applied device.

high quality. Creating a multilayer circuit board requires proper planning and organization, which means that the result will be a product of better quality than a double-layer or single-layer circuit board. In addition, these circuit boards are more reliable.

Improve durability. Multilayer circuit boards are durable. They can bear a lot of weight, and can withstand the heat and pressure that are always applied to them during the binding process. They also have multiple layers of insulating material between the individual layers and a prepreg adhesive that improves their durability.

Highly flexible. Circuit board assemblers who use flexible construction technology finally get flexible multilayer circuit boards with very desirable characteristics, such as being able to be applied to areas that require deflection and bending. However, it should be noted that the more layers used in the circuit board, the lower its flexibility.

More powerful. Multilayer circuit boards combine many layers into one unit circuit board. Therefore, they make the circuit boards have stronger connectivity and give them some characteristics that enable them to achieve higher speed and capacity even if they are small in size.

Single connection point. Multi-layer PCBs work in a single unit, so they always have only one connection point. This is not the case when you use multiple single-layer or double-layer circuit boards. This is a major benefit to the electronic world because it helps to maximize To reduce size and weight.