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Quality and quick-turn multilayer PCBs at low-cost prices.
A multilayer PCB is a printed circuit board consisting of three or more conductive copper foil layers. The copper layers look like multiple layers of double-sided PCBs, laminated and soldered together with heat-protective insulation layers in between them.
The whole assembly is arranged so that the layers are found on the PCB surface sides to connect with the environment. Electrical links between the layers are established through Via technology like plating through-holes, blind and buried vias. The use of this technique leads to the creation of complex boards of different sizes.
The invention of multilayer PCBs was majorly due to the evolving changes in the electronic sector. Electronic functions have become increasingly more refined with time, demanding more complex circuit boards. However, the PCB evolution was hindered by issues such as noise, stray capacitance, and crosstalk, which compelled boards to follow certain design restrictions. These constraints made it almost impossible to achieve high-performance levels from single and double-sided boards. That is how multilayer PCBs were invented.
By placing a double-layered board’s capacity into a format that is a fraction of the size, multilayer PCBs have become gradually common in the electronic industry. These boards come in various sizes and thicknesses to meet the requirements of their growing applications. Some variants range from three to twelve layers.
Multilayer PCB layers are mostly in even numbers because an odd number of layers can create circuit effects such as warping. An odd number of layers are also expensive to fabricate. Most multilayer use cases need between four to eight layers. However, use cases such as smartphones and telecommunication gadgets require twelve to sixteen layers.
Though they are a bit more expensive and time-intensive than their counterparts, multilayer PCBs play a significant role in modern technology. This is primarily because of the numerous benefits they provide.
Multilayer printed circuit boards have become the go-to solution for various applications in almost every sector. This high demand has resulted from the steady push for mobility and functionality in the electronic world. Multilayer PCBs are the ideal solutions for this push, offering increased functionality and miniaturized sizes. Because of this, they have become almost pervasive in many technologies like:
Consumer electronics refers to a broad range of products used in daily activities like phones and microwaves. These devices have PCBs, and most of them have dumped standard PCBs for multilayer PCBs. The modern electronic consumers prefer multi-functioning and smart gadgets that integrate well with their daily activities. Additionally, they like the miniaturized sizes and super functionality offered by multilayer PCBs.
Computer motherboards and servers use multilayer PCBs because of their space-intensive and enhanced functionality attributes. Computer electronics prioritize PCB performance to the cost factor. Therefore, multilayer boards are suitable for the computer electronics sector.
Telecommunication gadgets typically apply multilayer PCBs in various general use cases like signal transmission, GPS, and satellite applications. This is because these boards have high durability and functionality properties. Printed circuit boards for telecommunication use cases are mostly mobile gadgets and tower transmitters.
As mentioned earlier, multilayer PCBs are more durable than single and double layer PCBs. This makes them a suitable choice for applications where rough handling is a common occurrence. As such, these boards have become popular in many industrial use cases, especially industrial controls. From industrial machines to control systems, multilayer boards are applied throughout manufacturing and industrial processes because of their high durability, miniaturized sizes, and high performance
Electronic products have become an integral part of the medical industry, facilitating the treatment, diagnosis, and R&D efforts. Multilayer PCBs are a perfect fit for healthcare equipment due to their miniaturized sizes, less weight, and high performance compared to their counterparts. Multilayer boards are commonly found in x-ray machines, heart monitors, CT scan machines, and testing equipment.
Due to the high durability, performance, and lightweight, multilayer PCBs are integral elements of high-speed circuits, which have become a priority for military use cases. They are also commonly used because of the defense sector’s high demand for highly compact engineering designs.
Modern cars, particularly electric cars, heavily depend on electronic products. from GPS to onboard computers to headlight switches to engine sensors, electronic products play an essential role in the performance of automobiles. This is why most automobile dealers prefer multilayer PCBs to standard boards. Apart from being small and long-lasting, multilayer circuit boards also display high performance and heat-resistance, making them a good fit for external applications
Technically speaking, multilayer PCBs present multiple design benefits. Some of these benefits include:
Because of the intensive labor and planning that multilayer designs require, they tend to be better in quality than their counterparts. In addition, they are more reliable.
One of the significant advantages of multilayer PCBs lies in their small dimensions. Due to their layered format, multilayer boards are essentially more diminutive than their counterparts with similar functionality. This is beneficial to modern electronic devices, as there is a rising demand for miniaturized, more compact, and powerful electronics such as smartphones, personal computers, and wearables.
Smaller boards are lighter since the numerous connectors needed to interlink separate single and double-layered boards are removed from the equation by multilayered designs.
Naturally, multilayer PCBs are more durable than single and double-layered PCBs. They can withstand their weight and the heat and pressure applied in binding them. Besides, multilayer PCBs have several insulation layers between circuit layers.
While this feature does not apply to every multilayer board, some apply flexible design techniques. This gives rise to flexible multilayer boards, which are perfect for use cases where mild bending and flexing take place on a semi-regular basis. Again, this principle does not work for all multilayer boards, and the more layers integrated into a flexible board, the less flexible it becomes.
Multilayer boards are high-compact designs, integrating several layers into one board. The close-quarters allow the PCBs to connect better, and their internal electrical features enable them to obtain higher capacitance and speed.
Multilayer boards are meant to function as one unit rather than in tandem with other board components. Consequently, they contain one connection point instead of several connection points needed to use many single-layer PCBs. This is beneficial to electronics as they only require one connection point to function.
The aerospace industry relies significantly on electronics in the technology age. From computers used on the ground to those used in cockpits, aerospace PCB products must be highly reliable, withstand severe atmospheric conditions, and have small sizes and weights. Multilayer boards are well suited for these working conditions with their multiple protective layers that prevent heat and external stress from damaging electrical connections. Their high performance and light weights also contribute to their increasing application in the aerospace sector.
The above benefits make multilayer boards essential in various applications, especially telecommunication gadgets and personal gadgets, like smartphones. Likewise, with several sectors considering mobile solutions, the demand for multilayer boards is growing daily.
MKTPCB manufactures high quality and affordable multilayer PCBs that are suitable for consumer electronics, computer electronics, telecommunication, industrial, healthcare, automotive, aerospace, and defense industries.
Are you interested to know more about our multilayer PCB manufacturing services? Are you in need of full-turnkey or partial PCB manufacturing services at quick turnaround times? Kindly request a free online quote now. Our PCB manufacturing and assembly services run 24/7 to meet strict deadlines. Our customer support also provides quick responses to our customers.
Specification | PCB Capacity |
|---|---|
Product quality | Standard IPC Class 2 and 3 |
Number of Layers | 2 – 24 layers |
Order Quantity | No MOQ requirement |
Material | FR-4 Standard TG135°C, FR4-High TG 170°C, FR4-High TG180°C |
Board dimensions | Min 6mm x 6mm | Max 500mm x 600mm |
Board Thickness | 0.6mm – 6.5mm |
Max Outer Layer Copper thickness (Finished) | 10oz |
Max Inner Layer Copper thickness | 10oz |
Min Track/Spacing | For outer layers: 1oz cu: 4mil: 3oz: 6mil – 4oz Cu :9 mil/9mil -5oz Cu :11mil/11mil -6oz Cu :13mil/13milFor Internal layers: 1oz cu: 4mil: 3oz: 6mil -4oz Cu :8mil/12mil -5oz Cu :10mil/14mil -6oz Cu :12mil/16mil |
Solder Mask Color | LPI-Green, Green matt, White, Blue, Black, Red, Yellow |
Silkscreen Color | White, Black, Yellow |
Surface finish | HAS, Lead-free HASL, RoHS ENIG electroless nickel |
Min Annular Ring | 5mil |
Min Drilling Hole Diameter | 10mil |
Other Techniques | Gold fingers, Blind/Buried Vias |
Production time | 48 hours – 5 weeks |
While PCBs for simple applications typically consist of one layer, advanced applications such as computer motherboards have multiple layers. These types of boards are commonly known as multilayer PCBs. With the demanding complexity of modern equipment, multilayer boards have become more popular, while production techniques have allowed them to size down effectively.
MKTPCB is your one-stop PCB manufacturer and service provider for all types of PCB, including advanced PCBs. We have more than ten years of experience in designing and manufacturing high-quality multilayer PCBs. We have state-of-the-art PCB fabrication equipment to ensure our end products meet customer requirements and industry standards.
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