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Why design 100 layer PCB ?

What are the layers of PCB?

Printed circuit boards are the basics of every electronic device. Electric pieces of equipment are relying on PCB because it is the way of communication within a device. Signals and other electric charges can flow well if the PCB is working smoothly in an electric device.  The market has many new and old choices for you when you are choosing your printed circuit board. There are flexible PCBs, multilayer PCB, colors PCB and many more. Usually, people choose the green color as the basic color, but you can order your color and it would not affect the working of the PCB. For simple and domestic electronics, single layer PCB can work well but for heavy devices, you need to choose a multilayer such as 100-layer PCB.

Layers of printed circuit board can vary from single to multiple layers of conductive material and dielectric material. Each layer of the printed board differs with functionality and the task that needed to be done by the printed circuit board. With so many choices available at your doorstep, it might sound overwhelming to select the best one. That’s why we have gathered information on different layers of printed circuit board especially the 100 layer PCB because this can help you with a wide variety of tasks you need to conquer. With the increasing demand for complex electronics, 100 layer PCB tends to deal with complexity and it is recommended because of its small size.

Difference between layers of PCB:

Layers of PCB help in determining the power and capacity of the PCB. It is confusing whether one layer PCB is good to go or we need to switch to multiple layers for better working of the device. The decision of selecting layers would be done by the purpose of the device. If the device is meant for heavy tasks then multilayers are the best choice but for cheap devices, single layer PCB can work well. So here are the different layers of PCB you should know about:

· Single-layer PCB:

As clear from the name, this PCB only has one layer. There is a conductive material, solder layer, dielectric and laminated in the single-layer PCB. As an early crucial component for electronic devices, single-layer PCB was used in the 1950s. Today, it is being used in home electronics usually throughout the world. Construction of this PCB is quite simple and inexpensive as it needs only one laminated layer of copper, conductive dielectric topped with a solder mask. Single-layer PCB can be designed easily so it is being manufactured in vast quantity and cost-effective as compared to any printed circuit board.

· Double-layer PCB:

The next type of PCB is the double layer. Its capacity is higher than a single layer so it can support a wide range of electrical devices. It is much easy to manufacture double layer PCBs as compare to many multilayer PCBs available in the market today. This is the most used option for electrical devices. This is convenient because of flexible design with a highly conductive material and also cost-friendly to design.

· Multilayer PCB (up to 100 layers):

100 layer PCB circuit board

The complex layer (greater than 4 and 6) are directly added to stack up in multilayer PCB. The 100 layer PCB will contain half the number of planes bounded by inner rows of dielectric material. In a multilayer PCB, two consecutive layers would be connecting on the surface of the circuit board for making a connection.

What are 100 layers PCB?

100 layers PCB are widely used for heavy electronic devices that required long-term working providing consistent service. Single-layer and multiple layers are combined to give this complex layer PCB. The area for wiring is increased by 100 layers PCB due to the increased number of layers. The layers are separated by insulating material such as dielectric in multiple layers PCB. 100 layers PCB are considered as rigid PCB because it is hard to design flexible circuit boards using multiple layers. The layers will be distinguished according to the need and complexity of the system. For example, the Smartphone uses multiple layers of PCB as its working is quite complicated. It is preferred to use an even number of layers in complicated devices rather than an odd one because an odd number of layers makes the circuit highly expensive and hard to manage. Cost is another vital factor that is needed to take care of. Moreover, blind vias are preferred in 100 layers PCB instead of making normal vias because it takes so much space. The different layers are identified as plane categories such as ground plane, signal plane, etc. The space between the two layers is vital because the circuit board required an insulating material such as a dielectric. On each side of the substrate board, a conductive metal layer is also added. The layers of the circuit board are joined by using an adhesive material. The complexity of the multilayer board is convenient for connection. That’s why 100 layer PCBs are used in complicated devices for building a strong connection.

How to design 100 layers PCB?

Designing your multilayer PCB can be a milestone at first but in the end, you will feel amazing once you have done that. So the first thing you have to look at while designing your 100 layer PCB is your CAD software. Make sure it is running smoothly. Its negative plane layers are working well. Pad shapers for exterior layers and interior single layers are also running correctly. In multilayer like 100 layers PCB, there are several layers you have to deal with so noticing these tiny factors is important. There are some specific materials you may require while working on a 100 layer PCB. Some of them are given below:

  • Metal foils such as copper
  • The basic structure of the board
  • For joining many layers of PCB, an adhesive material is also required
  • Ink for soldering
  • Ink for marking
  • For treating the surface of the circuit metals such as silver, alloy are used

Designing your first 100 layers PCB may sound overwhelming as being pushes out from the nest like a baby bird but it is that frightening. All you have to do is to make sure that your requirements of fabrication are clear and concise. You have a proper grip over the thing you need to achieve. The manufacturing process is an entirely different thing. We just focused based on things. Once you have done with that then you go to the process of cutting, alignment of the layers, inner films, color oxidization such as brown or black, drilling, copper foiling, pattern plating, solder masking, making the profile, and then testing at the and. All the steps go hand in hand and all the steps are crucial to take for designing a 100 layer printed circuit board for better working.

Benefits of using 100 Layer PCB:


It has been seen that the electronic industry is developing rapidly. The sophisticated machinery and appliances that are doing multiple tasks at once require heavy PCB too that can support the flow of charges and signal through them smoothly. Noise, crosstalk, capacitance, and stray were the common issues that were faced by PCBs in the past. A high rate of constraints was required, and old PCBs were not able to offer that. The most developed PCBs such as single and double were not able to serve for heavy applications. So, it was a need of time to build a strong PCB such as 100 layer PCB for building a sophisticated electronics industry. the variation in 100 layer PCB makes them the best choice for many applications. Moreover, the number of layers in PCB is preferred to be in even number rather than odd because even layers tend to do well in heavy machinery. Their size is also small so they can use smartphones and other related devices. So, there are many benefits of using 100 layers of PCB. Some significant advantages are given below:

  • 100 layer PCBs offer high assembly density because of their increased surface area. Their density is multiplied by the density of the layers. They have better functionality, increased speed, and great working capacity due to this increase in density.
  • The other great advantage of 100 layers PCB is their smaller size. The small size of 100 layer PCB is appreciated for technical devices such as smartphones, laptops, etc.
  • 100 layers PCB are designed in such a way that its integration fulfills the requirement of the connection with the component. So there is less need for connectors within the circuit boards. That’s the reason 100 layers of PCB are lighter in weight.  
  • 100 layer PCB offers better functionality as compared to any other PCB.
  • 100 layers PCB helps in building reliable and high-quality electronic products with proper working.
  • 100 layer PCB possesses excellent innate properties. This is the reason these PCBS offer high speed and better capacity.

Of course, there are some drawbacks as any other electronic device but still, 100 layer PCBs are serving in the best possible manner.




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