How Does 48 Layer PCB Impact Modern Electronic Devices?

Multilayer printed circuit boards like the 48 layer PCB have continued to transform things in the world of electronics. Since printed circuit boards came to be, there has been a development of more compact, as well as complex electronics. Most of the electronic devices of today integrate multilayer printed circuit boards. Here, we will be talking about the 48 layer printed circuit boards.

48 Layer PCB: What is this?

48 layer printed circuit boards are multilayer boards having 48 copper layers. Furthermore, this printed circuit board has power planes, ground planes, and signal layers. In addition, the PCB also has a solder mask, silkscreen ,etc. 48 layer printed circuit boards are usually about 10 mm thick. It offers great dimensional stability due to the number of layers it has.

Manufacturers of the 48 layer printed circuit board do a great task in arranging the signal, as well as the ground layers. With this, you can be sure that the printed circuit board works fine with different HDI applications. All the applications are interconnects of high density. The 48 layer PCB materials ensure that the dielectric constant is low. Furthermore, 48 layer pcbs usually have thin dielectric materials. This is why the coupling between the layers is usually very tight.


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Materials Utilized for 48 Layer PCBs

48 layer printed circuit boards have different materials. These materials include CEM3, FR4, copper foils, epoxy resins, etc. For 48 layer pcbs, the producer presses, as well as bonds the fiberglass resin with the copper foil materials. For those new to this, FR4 is a common material in PCBs, which offer adequate rigidity and glass transition temperature for your electronic products.

Furthermore, the material provides great resistance against moisture. What this means is that printed circuit boards incorporating the FR4 material will easily withstand any high temperature. Furthermore, the material ensures accurate dielectric strength.

Solder mask, FR4, and silkscreen form the base materials of this PCB. Another important feature of this PCB is its high transition glass temperature. There are other materials used for the 48 layer PCB. These include prepregs, as well as copper foils. Furthermore, different thicknesses of copper are present in the 48 layer PCB. The amount of layers and thickness of copper also helps it in conducting high loads of current.

48 Layer PCB Stackup

48 layer PCB stack up deals with the arrangement of the 48 layers on the printed circuit board. For this type of PCB, there are different ways to arrange the layers of copper on the circuit board. Before a manufacturer does this, he or she must consider some factors.

For this stackup, there are power planes, ground planes, and routing layers. These routing layers may be bottom, middle, or top layers. For the 48 layer PCB stackup, the power and ground planes are very necessary. This also depends largely on the type of application you design the board to handle. A very significant aspect of the 48 layer PCB is signal routing. The configuration of the stack up helps in determining the functionality of the board. Stackups that are well-arranged helps in ensuring the signal routing of printed circuit boards.

Benefits of the 48 Layer PCB

48 layer printed circuit boards play a huge role in how electronic devices function. For different projects, 48 layer pcbs offer great benefits. These include its small and compact size, great functionality, and more.

Compact Design

48 layer pcbs have a small size, and therefore supports designs that are compact. It works fine for small devices like phones and laptops. This PCB is very important as electronic devices become smaller, but complex. This PCB is great for both miniature and complex devices.

Great Functionality

48 layer printed circuit boards have great functionality. This is why it is useful in projects requiring high-power and high-density interconnect. Furthermore, this printed circuit board ensures an enhancing of efficiency in projects requiring high speed.

Conducts high current

48 layer pcbs have the ability to carry high current. It features different thicknesses of copper and will tolerate high forces of electric current.

Work for different temperatures

48 layer pcbs can function under different temperatures. The design works with different temperatures. It also serves high-end applications.


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Process Involved in Manufacturing 48 Layer PCB

The fabrication of the 48 layer pcb deals with several steps. To ensure you have a functional board, you must carry out these steps carefully

Selection of the inner core layer

The stackup helps in determining the materials necessary for the 48 layer pcb. Also, it gives details about the size of the panel and the weight of copper. Furthermore, it offers information regarding the epoxy glass type.


The 48 layer PCB manufacturer uses chemicals to clean up the inner layers. This helps in removing contaminants from the copper surface

Imaging of the inner layer

This stage involves the manufacturer placing an imaging material on the PCB’s copper surface. This imaging material helps in concealing the copper circuitry, thereby exposing it to unwanted copper.


Then you etch the inner layers to get rid of any unwanted copper. Then you remove the photoresist to show the copper circuitry.

Layer Lamination

The layers pass through heat and pressure in a vacuum chamber. You apply vacuum to remove entrapped air. Then, layers undergo pressure and heat.


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You then load your laminated circuit board onto the drill bed. Your manufacturer drills holes into the printed circuit board via holes and vias.

Copper plating

All 48 layer PCB manufacturers must ensure that the drilled holes are very conductive. These holes are filled with copper by the manufacturer. The process through which this occurs is electroplating. For this process, manufacturers deposit a thin copper layer in the drilled holes.


You need to conduct an Automated Optical Inspection (AOI) test to verify the board’s functionality. This reveals everything that even the eye of humans cannot see.


48 layer PCBs are very important for the majority of electronic devices. It has a lot of benefits and features to offer. We hope we have been able to explain this topic properly. If you have more questions on the topic, please drop them below.

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