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Is possible to fabricate 50 layer PCB?

A printed Circuit Board (PCB) is mechanically an assembly of various electronic components embedded in a circuit board to help pass the channel of electrical energy in the assembly. The components fastened in this circuit are separated by small sections of insulation; this will avoid the risk of excessive heating to the other components. PCBs are of different kinds varying in size and thickness. Among all these multi-layered PCBs the one with the maximum number of multi-layered copper blanks is 50 layers Printed Circuit Board.

50 layers PCB is a series of consecutive double-layered copper plates. This overlapping in 50 layers printed circuit board can make a complex structure of the electrical network that will consume a heavy potential of doing multiple tasks uninterruptedly. The more the layers of the printed circuit board the more simple the system may work. Now here you need to look for an authentic answer to the question that is it possible to fabricate a 50 layers PCB?


First, you need to know that, the fact that 50 layer PCB is a complex network of series of multiple thick layers of copper sheets. This complex structure needs a very careful observation of threads of additional steps to complete its fabrication. A 50 layer PCB is integrated with a conductive copper and insulating material. These two conductive and insulating materials are combined and located alternatively to each other.

Is it possible to fabricate 50 layers PCB?

Isola FR408 PCB

Let’s answer this frequently asked question by pondering over some important points of 50 layers PCB. As discussed above, the Printed Circuit Board (PCB) is a rigid board that supports several electronic components electrically and mechanically. Before having fabricating your PCB 50 layers, you need to know about these components thoroughly.

The 50 layers Printed Circuit Board (PCB) is formed of copper sheets laminated into a non-conductive substrate. The working of this modern tech 50 layers PCB is facilitated by a few capacitors, resistors, and active devices that are embedded in that substrate.

Yes! It is even possible to fabricate 50 layers PCB like any single-layered or doubled-layered PCB. But before, jumping into the guideline you must have known that the data entry required for the material used in fabrication should be in appropriate quantity.

How to make data analysis of the PCB components? — Must-Follow Steps before Fabrication

STEP: 1 Data Entry by Computer-Aided Design (CAD System)

In this step, CAD will assist the PCB data to be transferred to the manufacturer. PCB has a layout on a computer-aided design. CAD uses its internal storage for data formatting. With the aid of CAD, PCB transfers its standard output format layout to the manufacturers.

STEP: 2 Extended Gerber Files

The extended Gerber files are also called RS274X. The file is responsible to maintain a track record of all electronic components; the solder masks notations and copper layers. After the data has been collected and verified the process of fabrication could go the way around.


The Printed Circuit Board (PCB) is the most complex shape of technology. The copper plates inserted between the PCB vary in range from 1, 2, 10, 40…. and goes up to 50 copper sheets. This forms a thick even complex network of electronic components mechanically supported in a Printed Circuit Board. You will get the basic idea of how is it possible to fabricate 50 layers PCB in the following step-by-step guide.

  1. Determining the Nature of PCB

In the first step, it is essential to have sufficient information about the specifications needed for 50 layers PCB. The detailed information about the material specification and layer build-up is the first requirement. Only after that, the data entry could be passed on to the CAD for fabrication.

  • CAD Software Tooling

Now, this is the crucial step. The data transferred to the computer-aided design is now manufactured in the eye of keen observation. This step is critical because it is to be ensured that the PCB is produced by using the premium CAD-CAM Software Tools following the 50 layers PCB design and specifications.

  • Drilling

The process of drilling in 50 layers Printed Circuit Board is unique from other circuit boards. Keeping in view, the design and thickness of this circuit board the drilling machine is loaded with several different types of drills to make the holes in the printed circuit board. The holes are made into the copper plates by an automated drill which works on the state of the art technology to adjoin the top and bottom parts of the circuit together.

  • 50 Layers Lamination Process

Once, the inner layers of 50 layers PCB are built. These layers are now bound together with the assistance of prepregs. The lamination of the inner layers is completed by heating the laminate to 185 degrees/2 hours.


  1. X-ray
  • Hole Drilling

This is an additional step for the verification of the accurate drilling at the target positions in the centerline of the inner layers.

  • Electrolytic Plating Process

During fabrication, the electrolytic plating is processed into the holes made in inner layers by adding copper to it. During the electrolysis of copper, it turns into a cathode which is filled in the holes to help pass the electricity from top to the bottom and in between the layers. This process is also called Blackhole Lining.

  • Laser Imaging

This part of the fabrication of 50 layers PCB is very interesting. In this step, a laser machine is used to scan the blank surface and forms an image of the 50 layers Printed Circuit Board efficiently on a photosensitive film.

  • Tin Plating Process:

After the blanks have been electroplated in copper for about an hour the next step is to carry out these blanks into a tin tank for having been tin plated for about 10 minutes. In this process, a reverse current flows from the blanks to throw the small copper pieces down the holes. 

This is the final stage in fabricating a 50 layers PCB. In this stage, the 50 layers Printed Circuit Board is analyzed to compare the final image of the circuit board with the data previously recorded. The 50 layers PCB is now scanned by a camera and cross-checked by an operator to examine whether if the specifications are accurate or if any errors found are significant or not. This will ensure the high quality of the printed circuit board.

What Type Of Solder Resist Is Inserted In A 50 Layer PCB?

The Printed Circuit Boards have a permanent resin coating on the copper blanks. This resin-based coating is called Solder Resist which is defined as a photo imageable ink used to coat both sides of the Printed Circuit Board. The solder resists applied in a 50 layers PCB is applied over the entire outward surface of the Printed Circuit Board. The solder resists in 50 layers PCB is green in color.

50 Layers Printed Circuit Board | PROS:


There any many pros of having a 50 layers PCB. Following are some ways in which you may get to know how 50 layers are the best circuit board for long term use than its alternatives:

  1. High In Assembly Density:

Single-layer PCBs have low density than a 50 layers multiple PCB. Due to the high assembly density of 50 layers, PCB can perform its functions with an effective increase in speed and capacity. Moreover, the area of 50 layers PCB is reduced.

  1. Smaller In Size:

One of the unique features of 50 layers PCB is that we can increase its surface area by adding more layers to it. Unlike, single layers PCB we can only increase its surface area by increasing its size. This eventually exhibits that 50 layers PCB is far more effective to use in even smaller electronic devices.

  1. Lighter In Weight:

If you are concerned with the overall weight of the 50 layers PCB then you should know that the number of connectors used in a 50 layers PCB is far more reduced than a single-layer PCB. This also eventually reduced the weight of the overall circuit board. Hence, 50 layers PCB are more empirical for smaller electronic devices.

  1. Functionality:

50 layers Printed Circuit Board is advanced in its functionality. In comparison with a single layer PCB, 50 layers PCB stackup have a high capability of functionality. Its ultra-modern design, high capacity, improved quality, and speedy functionality make it the best Printed Circuit Board of all time.


Final Thoughts:

We are now certain that you have had a complete guide on how is it possible to fabricate 50 layers PCB? Today, 50 layers PCB are the most reliable and advanced in their design and accuracy for all electronic devices. This miniature 50 layers Printed Circuit Board is the improved version of the complicated structures of circuit boards these days.