Multilayer PCB

Multilayer PCB definition

A PCB that is constructed with three or more conductive copper foil layers is referred to as a multilayer PCB. These resemble many double-sided circuit board layers that have been laminated, bonded, and separated by layers of heat-resistant insulation. Two layers are put on the PCB’s surface sides in order to link to the environment during the complete construction. Vias, such as plating through holes, blind, and buried vias, are used to provide all electrical connections between the layers. The creation of extremely intricate PCBs of various sizes results from the application of this technology.

A printed circuit board having more than two layers is called a multilayer PCB. Two conductive layers are present on the top and bottom of the PCB substrate of a double-sided PCB. A multilayer PCB must contain at least 3 conducting layers made of copper or another conductive material. Copper plated holes link one layer to the next. The number of layers might range from four to hundred.

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Benefits of Multilayer PCBs

Multilayer PCBs have a number of advantages that make them extensively utilized in contemporary advanced electronic gadgets and electrical appliances, despite the fact that their design process is difficult and demands domain expertise. The following are a few advantages of multilayer PCB boards:

  1. In contrast to using several single-sided PCB, multilayer PCBs are designed to operate on a single connecting point.
  2. This particular type of printed circuit board is made to support a greater amount of weight and can survive the heat and pressure needed to bond the layers together. Additionally, they don’t need to be completely redesigned and offer flexibility to be modified in accordance with the applications.
  3. To provide multifunctionality in the tiny form factor printed circuit board, a great deal of work is put into its design and production. They have a number of features that are required by smartphones because a single-layer board often cannot provide them owing to its restrictions.
  4. These multilayer PCB can be employed in wearable smart devices and are produced to attain a lighter weight. The removal of several connections needed to join various double-sided PCBs of a multilayered design is one of the main causes for the weight reduction.
  5. Reduced form factor: Multilayer PCBs have employed sophisticated design principles and developing manufacturing techniques to make their boards smaller while preserving the same functionality. Multilayer PCBs are also utilized in smartphones and other small-sized electronic devices, so they may be quickly modified to meet the rising demand for electronic wearables.
  6. Multilayer PCBs are made to function alone rather than in conjunction with other PCB parts. They only have one connection point as a consequence, as opposed to the several connection points needed to employ numerous single layer PCBs. Since there is just one connecting point required in the finished product, this also works to the benefit of designers of electrical products. This is especially advantageous for small electronics and devices made to be light and compact.
  7. Multilayer PCBs, which combine numerous layers into a single PCB, are extraordinarily high-density assemblies. Due to the close quarters, boards are more connective, and despite their small size, their inherent electrical characteristics enable them to operate at higher capacities and speeds.
  8. Less weight is associated with smaller PCBs, especially when multilayered designs replace the many connections needed to join separate single and double-layered PCBs. Again, this is advantageous for contemporary electronics, which are more oriented on portability.
  9. Multilayer PCBs often have higher quality standards than single and double-layer PCBs because of the time and effort required to create them. As a result, they frequently become more trustworthy.
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Multilayer PCBs Disadvantages

  1. At every level of production, multilayer PCBs are more costly than single- and double-sided PCBs. Along with the expensive assembly equipment, there is more labor-intensive design work.
  2. Compared to other PCB kinds, multilayer PCBs are more challenging to manufacture because they need extensive design time and precise manufacturing procedures. This is due to the possibility that even minor design or production errors might render the PCB worthless.
  3. Anyone cannot design multilayer PCBs since they need CAD tool skills and knowledge of design rule checks. Domain knowledge is crucial since the design process presents a number of difficulties.
  4. The cost of the equipment required to make multilayer PCBs is one of the biggest problems. Not all PCB makers possess this equipment since they lack the resources or the need for it. As a result, there are fewer PCB manufacturers who can make multilayer PCBs for customers. In order to avoid disappointment, it is important to carefully research a PCB manufacturer’s capacity for multilayer PCBs before choosing it to be your contract manufacturer.
  5. There are more production needs as complexity rises. This contributes to a severe problem with the turnover rate of multilayer PCBs: each board takes a long time to create, increasing labor expenses. Additionally, it could result in lengthier times passing between placing an order and receiving the product, which might be problematic.
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Why you need multilayer PCB?

Industry trends account for a large portion of the preference for multilayer PCBs. Electronics are always moving toward downsizing while still offering several functions, therefore their internal parts must do the same. Multilayer PCBs offer a comprehensive solution, but single and double-sided PCBs have shown limitations in their capacity to strike a compromise between size and functionality.

While employing multilayer PCBs has some disadvantages over single and double-layer choices in terms of prices, design time, and production inputs, these expenses are becoming more and more common in today’s society. People choose functionality above price most of the time, and they are ready to spend extra for products with enormous storage capacities. Additionally, as the technology spreads, production methods and equipment will eventually become more affordable, especially when new methods enter the market.

Due to their inherent electrical characteristics, multilayer printed circuit boards may give your product both great capacity and speed in a more compact package. Simply by merging them in circuit board, the connectors that are typically required for various, independent PCBs are decreased or removed. This makes construction easier and decreases weight even further.

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Why work with us?

The INTOPCB Multilayer PCB manufacturing capabilities, a crucial component of our company, fuels our aim to provide reliable technology at the lowest overall cost possible, maximizing your product lifespan and maximizing your cost point.

Short lead times, regardless of order size – INTOPCB’s experienced team has the commitment and experience to deliver your multilayer boards designs in a secure and controlled manner. With significant capacity to support low volume production in some of the marketplaces’ most efficient lead times, through to higher volume mass production.

the most recent technologies Our quality of multilayer boards goods and service aligns fluidly with your project needs by utilizing the most recent technology, including modern robotics to minimize touch time and reduce product workflow.

Our multilayer PCBs surface finish: Immersion Silver, Leaded HASL, LF HASL, ENIG, ISIG, ASIG, ENEPIG, Organic solder paste

PCB Applications

Multilayer PCBs are widely applied in various industries, such as
1. Aerospace,
2. Automotive,
3. Consumer Electronics,
4. Medical Devices,
5. Computer Electronics,
6. Military and Defense,
7. Telecommunications,
8. Industrial equipment,

The multilayer PCB boards are used in a lot of devices such as Hand held devices, Satellite systems, Industrial controls, GPS technology, Cell phone repeaters, Cell phone transmission, Signal transmission, Data storage, File servers, Computers, Space probe equipment, Nuclear detection systems, Weather analysis, Fiber optic receptors, Central fire alarm systems, Atomic accelerators, Cat scan technology, Heart monitors, X-ray equipment, Test equipment and so on.

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