4 Layer Multilayer Printed Circuit Board Manufacturing

When it comes to PCBs, there are infinite possibilities for the number of layers we can design. Some supercomputers have circuit board structures with nearly a hundred layers. However, the most common boards are usually two or four layers. 2-layer PCB Compared to 4 layer multilayer printed circuit board, 2-layer PCB is easier to work with due to its simple design.

The 4 layer printed circuit board is the simplest kind of multi-layer circuit board. Compared with the double-sided PCB, it has greatly improved the electromagnetic compatibility of the circuit board. A 4 layer multilayer PCB has a larger surface area than a double-sided PCB, increasing the possibilities. Of all the multilayer circuit board types, the most common is the 4 layer multilayer printed circuit board.

The stackup of 4 layers multilayer printed circuit board is very strong, it consists of top layer, 1 inner layer, 2 inner layers and bottom layer for routing electrical signals. Both inner layers are located between the top and bottom layers. Therefore, a 4 layer multilayer PCB means 2 signal layers + a positive voltage layer (VCC layer) + a ground layer (GND layer) or 3 signal layers + GND layer. In a 4 layer multilayer printed circuit board design, more surface area is available for traces. Therefore, this design structure provides excellent routing for both low-speed and high-speed signals. Therefore, they are ideal for more complex devices.

What is the use of the layers of the 4 layer multilayer printed circuit board? The most important layer in the PCB board is the copper circuit layer. While a double-sided PCB has two wiring layers, a 4 layer multilayer printed circuit board has four wiring layers. These wiring layers are used to connect to additional electronic components in the device. Between these layers is an insulating layer or core, which is added between the wiring layers to give it structure.

In 4 layer multilayer PCB, there is also a solder mask layer, which is applied on top of the signal layer. This prevents the copper traces from interfering with other metal components on the PCB. They also have a silkscreen layer to add numbers to the different components to make them easier to understand.

If you are looking for a 4 layer printed circuit board prototype/batch processing manufacturer, then HUIHE Circuits is your best choice. We provide multi-layer PCB boards, high-frequency PCB boards, thick copper boards, HDI&buried blind vias boards and rigid-flex boards. HUIHE Circuits provides PCB products and services with quick delivery, reliable quality and low overall cost. The company’s products are widely used in communication, power supply, medical equipment, industrial control, automotive electronic intelligent equipment, security electronics and other fields, and the products are exported to Europe, America and other countries. All products of the company comply with RoHS and other environmental protection standards and relevant laws and regulations. The system is complete and the quality is stable. We are committed to providing our customers with more convenient and quick services! Contact us now!