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Custom 4 Layer PCB

4 Layer PCB

Why Choose YMSPCB for Your 4-Layer PCB
YMSPCB is one leading 4 laver PCB manufacturer for over 12 years in China. Throughout the years of offering high-quality and perfect service, YMSPCB has become the most reliable 4-layer PCB supplier in China.
4 layer PCB means there are 4 layers to rout electrical signals: Top Layer, inner Layer 1, Inner Layer 2, and Bottom Layer.
YMSPCB has one expert engineering and production team, that can provide professional advice for your4 layer PCB project.
What's more, YMSPCB can offer a turnkey solution for your project. From PCB design & layout, PCB fabrication to PCB assembly, all processes are in-house and not outsourcing.
If you are looking for a reputable 4-layer PCB supplier for your project and business, YMSPCB is your best choice.
In order to support you, our sales team is working to follow up on your local time. When you have an urgent project, we can help you to produce it with 48h quick-turn service.


There are many different applications for 4-layer PCB, such as power supply, medical devices, automotive, industrial controls, smartphones, GPS systems, motion systems, and satellites.
YMSPCB has passed ISO 19001 and 14000 certifications, so we always offer top-quality to our customers.

Custom 4 Layer PCB

We put at your disposal our know-how for the most complex printed circuit designs with parameters or characteristics so special that they require the personal assistance of our team. We will provvide customized solutions that meet your needs simply by sending us your files by e-mail.

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Double-Sided PCB: The Ultimate FAQ Guide

What Is A 4 Layer PCB?


A 4layer PCB is a circuit board that consists of 4 glass fber layers or conductive copper traces that helpto route the signals.
There are 4 layers, and each one of them is identifed as a bottom layer, inner layer 1. lnner layer 2 andtop layer.


What is the Difference Between 4 Layers and 2 Layer PCB?

While 2-layer PCBs have two signal layers, 4-layer PCBs have – you guessed it – four. These signal layers are used to connect to other electronic components in the device. In between those layers is the insulation layer or core, which is added in between the signal layers to give it structure.

What is the Manufacturing Process of a 4 Layer PCB?

Step 1. Pre-clean the Copper Plate Laminates;

Step 2. Inner Layers Imaging (photoresist imaging)

Step 3. Lamination

Step 4. Drilling and Electroplating Plated-Through Holes

Step 5. Circuit Generation on Outer (1st and 4th) Layers

Step 6. Solder Mask, Surface Finish, and Silkscreen

Step 7. Final Shaping

Step 8. 4-Layer PCB Test, FQC, and Packaging

What Are The Applications Of A 4 Layer PCB?

Heart Monitors. Computers. GPS Technology. File servers.

What Components Can Be Used On a4 Layer PCB?

A 4-layer PCB consists of several components as it is a pretty complex situation to develop such PCBboards.
A capacitor is used that helps to store the electrical charge.
The transistor on 4-laver PCB helps to distribute the electric charges into the diodes as well as the circuit.
A voltage source and electronic capacitor regulars the charge.
An electronic diode that allows the flow of charge in a specific direction and also protects the circuitfrom high voltage damages.
Electronic transistors help to control electrical charges.
IC chips for various functions such as the conversion of signals.

Do Manufacturers Use Fiberglass In The Manufacturing Of A 4 Layer PCB?

Fiberglass is ideal to use in the manufacturing of a 4-layer PCB because it is a plastic compound havinggood properties when used with glass.
lt is a cheap material that saves the cost of manufacturing PCB while providing good strength and weightto the board.
This flexible material is very much transparent to electromagnetic radiation, which helps to deform into any required shape easily.
It allows holding all the layers of 4-layer PCB in a firm point.

What ls The Process Of Making Traces On A 4 Layer PCB?

There are two methods to make traces on a 4-layer PCB board, and both of them help to provide conductive traces that help in better transfer of electrical charges.

What Other Metals Apart From Copper Can Be Used In A 4 Layer PCB?

Conductive metals like nickel, tin, aluminum, and gold can also be used in a 4-layer PCB instead of copper.
Copper is a commonly used material in the traces because it provides good conductivity of the current through the board having large charge flow capacity and availability with its cheap cost.
Nickel and tin are not as good as copper conductors, which is why copper has an advantage over them.
and aluminum and gold are pretty expensive than copper, which again makes the copper ideal choice.
However, all of these metals are good conductors, and they can be used to manufacture 4-layer PCBs. YMSPCB be offering 4-layer PCB boards with all types of metal construction according to the customer'sneed.

When Should I Choose A 4 Layer PCB Instead Of A Single Layer PCB?

What's more, there is a factor 4 layers PCB cost what the higher quality of signals, achieving by decreasing distortion and propagation levels. So more and more electronic engineers prefer to 4 layers PCBs due to the higher levels of signal integrity and reduced interference levels.

Does Thickness Matter In A 4 Layer PCB?

The thickness really matters in a 4-layer PCB because a thicker board has more current-carrying capability and better resistance to heat temperatures. lt is crucial for the design of a 4-layer PCB board, without which it won't be considered a good board.A less thick PCB is most likely to end up being compromised or result in a weak board with less performance that can break at any point.
Sometimes, a weak board can easily get short circuits and even lead to component failure in many situations.
The thickness matters a lot when you consider the use of a PCB board in any circuit or device

What Are The Locations Of Power And Ground Plane In A 4 Layer PCB?


The power and ground planes are situated in the center of a 4-layer PCB forming a stable connection having with two inner layers.
These planes are useful to connect the PCB to a ground source, and a power source, and they are called inner layer 1 and inner layer 2.
The inner layers allow easy connection for the components with the ground and power sources through the planes, making a simple and stable connection.
These ground and solid power planes play a major role in deducting the electromagnetic interference caused by the phenomenon so that signal quality can be enhanced.


What Type Of Circuit Board Does A 4 Layer PCB Have?

A 4-laver PCB has a multi-layer board for the circuit as it is meant to deal with high temperatures and more current flow for better performance. All of these layers in these boards act as power and ground planes to provide proper routing for the signals, and they are fashioned separately from one another.
This formation of layer plays a major role in providing a better-reduced voltage noise and great electromagnetic conduction.
The power cord noise is also reduced with such PCB boards, and it ensures that a reduced area of signaloops is formed for better transmission of signals.
Such configuration greatly helps to increase the functionality of the overall performance of the board

What ls The Maximum Amount Of Current That A 4 Layer PCB Can Carry?

Normally, the maximum current that a 4-layer PCB 50mil-trace can carry is 2.6 amps. This amount can vary depending on the thickness of the trace used on the board thicker copper trace, if used on a 4-layer PCB board, will allow more current to flow through it. In case you have a 4-layer PCB with a wider trace, in that case, it will still have more current capacity on the board.
You can get the highest current carrying capacity of 4-layer PCB boards from PCBMay which offers the best quality products in China.

Cost of 2 layer PCB and 4 layer PCB

There is no doubt that 4 layers PCB is more expensive than 2 layers PCB because of complexity of design and higher sensitivity. What’s more, there is a factor 4 layers PCB cost what the higher quality of signals, achieving by decreasing distortion and propagation levels. So more and more electronic engineers prefer to 4 layers PCBs due to the higher levels of signal integrity and reduced interference levels.

What Are The Benefits Of A 4 Layer PCB?

A 4-layer PCB has various benefits if you get it from the best manufacturers, such as PCB may which are the leading manufacturer in China.
These PCBs help to improve EMl performance, and they can be used with portable devices if the PCB board is of a smaller size.
They greatly help to miniaturize the design as well as deal with complex routing very easily.The layered design of these smaller size PCBs helps to provide the same functionality at less cost and in small devices easily.
They have less weight and multiple connectors, allowing them to transmit and receive various signals by interlinking with multiple devices.
They are very beneficial for all modern electronics as they provide better mobility and they are easier to fabricate as well.
A 4-layer PCB has better weight capacity, and it can resist high temperatures that they have to face during lamination.
The flexible properties of these PCB boards help them to have long-lasting life and better bending
Usually, these PCB boards have a higher capacity to handle power than a 2-layer PCB board which is why they are always a better option for providing increased connectivity.
The multiple layers of insulation on these boards provide them with better durability for all types of usage in any situation having protective materials on them.
Their electrical properties can help them to adapt and achieve a higher electrical density with their multilayers and make them more connective.
They are best to use with a single connection point as they provide a single connection to the final product that comes of great use for small and portable devices and electronics

How Does A 4 Layer PCB Achieve Low Noise On The Power Cord?

As a 4 layer, PCB has quadruple layers of copper on its board augmented together for routing the signals; these layers help to minimize the interference level as well.

How ls 4 Layer PCB Different Form Other Types Of PCBs?

A 4-layer PCB differentiates from other types of PCBs such as a 2-layer PCB because the design of a 4layer PCB has its own complexity.
The difference can be seen in the thickness as well as in the time of development when a PCB is processed and manufactured.
The cost is additionally a great difference between these PCBs because a complex PCB board like 4-layer requires more quantity of material which raises the cost.
A2-layer PCB is cheaper and less expensive because the complexity is not so much to be found, and it's easier to design with less time required for manufacturing.
Each of these PCBs has its equivalent number of sided traces on them, such as a 2-layer PCB will have two-sided traces with its bottom and top layer whereas 4-layer PCB will have 4 layers.
1-layer or 2-laver is not good enough as 4-layer PCB as it's always better to use four because of its support for high-level complexity having four copper layers on it.

If you cannot find an answer to your question in our FAQ, you can always contact us and we will be with you shortly.

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