Skilled 20 Layer PCB Fabricator in China

The Genuine 20 Layer PCB Built by PCBMay

PCBMay insists on high standards for your 20 Layer PCB. As an international company, we keep up with the advanced technologies deployed in PCB manufacture.

• Our boards are UL certified in US and Canada
• Your Multilayer PCB generates income for you while keeping the costs low
• You can choose Rigid, Rigid-Flex, or Flex Multilayer, depending on your needs
• Compact and lightweight design
• Customizable to enhance the purpose of your device

Our premium 20 Layer PCB optimizes your resources. Let’s face the truth: these boards are costlier than Single-sided or Double-sided PCBs. However, the biggest draw of the 20 Layer PCB board is its versatility. Unlike simpler PCBs, these complexly designed PCBs are great for all-round use.

We are a responsible Chinese supplier. PCBMay follows ISO 14001, which is strict with environmental standards. We can assure you that our raw materials are also sourced sustainably. Furthermore, we rigorously check our employees for proper handling of your 20 Layer PCB.

If you need it, you can easily request a COC (Certificate of Conformity) report. For your peace of mind, our customer service staff will answer any PCB-related queries you have. Our communication lines are open 24/7, on your timeline. If you need a quick quote, chat with us now! Our staff is well-prepared to answer you.

For your commercial or your electronics project success, we are your go-to company. Your best Multilayer board option is PCBMay’s 20 Layer PCB. Don’t miss out on a chance to push your business to the next level.

 20 Layer PCB: The Ultimate FAQ Guide

Are you looking for a multilayer circuit board for your sophisticated IT Projects?

20 Layer PCB is a reliable solution to promote the quality of high-power and high-density applications. This multilayer PCB has an excessive demand for its compatibility with high-speed devices.

PCBMay deploys advanced technologies in manufacturing 20 layer PCBs. We ensure high-quality multilayer circuit boards, which are essential to optimize your project. If you don’t have a deep understanding of 20 layer circuit boards, this FAQ guide will be helpful for you. Let’s make a move to dig it deeper.

What Is A 20 Layer PCB?

A 20 layer PCB is a reputable multilayer circuit board. It consists of 20 layers which are made of copper in the alternation of epoxy resin materials. It is also composed of solder masks, silkscreen, etc.

This multilayer PCB is around 3.2-4.8 mm thick, and its thickness tolerance is almost 10%. It offers tremendous dimensional stability in electronic applications. Here, the signal layers and ground layers are arranged effectively so that this PCB can be compatible with High-Density Interconnect (HDI) applications.

The construction materials of 20 layer circuit boards provide a low dielectric constant. Besides, their dielectric materials are also thin for this high-layer PCB. That’s why a tight coupling is formed between the PCB layers.

This feature ensures reliable shielding in high-speed signal layers of multilayer circuit boards. In a nutshell, a 20 layer PCB delivers outstanding performance in electronic devices because of its excellent specifications.

Different 20 layer printed circuit boards are available in the market that matches your demands. The most prominent 20 layer PCB types are

• High current 20 Layer PCB
• 20 layer rigid-flex PCB
• High TG 20 layer PCB
• 20 layer Rigid PCB
• 20 layer ENIG PCB

20 Layer PCB

What Are The Base Materials Of A 20 Layer PCB?

The base materials of a 20 layer PCB are FR4, epoxy resins, copper foils, CEM3, etc. Copper foil and fiberglass resin materials are pressed and bonded together before PCB fabrication.

These materials are cost-effective and ensure the consistency of electrical and mechanical features. FR4 is an effective PCB material that offers sufficient rigidity in electronic products. It provides adequate glass transition temperature and a low thermal expansion coefficient.

FR4 provides superior resistance to moisture and dust absorption. Besides, it ensures proper dielectric strength, which is essential for insulating properties of a 20 layer circuit board. Again, FR4, silkscreen, soldermask, etc are used as the base materials of 20 layer circuit boards.

High TG 20 layer PCBs incorporate rogers 4350b and 4360 that ensure a transition temperature of more than 180⁰C. These features allow this PCB to be compatible with numerous digital communication equipment.

20 Layer PCB Materials

How To Construct A 20 Layer PCB Stackup?

The construction of a 20 layer PCB stackup is a vital task for achieving the best performance. You can follow the process given below for stacking this PCB.

L1: Copper foil

L2: Prepreg

L3: Prepreg

L4: Copper

L5: FR4

L6: Copper

L7: Prepreg

L8: Copper

L9: FR4

L10: Copper

L11: Prepreg

L12: Copper

L13: FR4

L14: Copper

L15: Prepreg

L16: FR4

L17: Copper

L18: Prepreg

L19: Prepreg

L20: Copper foil

It is required to place the signal layers close to the plane and couple them tightly. Besides, the ground can be utilized as the return path for signals. Contact an experienced 20 layer PCB manufacturer to handle this stackup.

20 Layer PCB Stackup

What Are The Benefits Of 20 Layer PCBs?

20 layer PCBs include immense positive features to electronic projects. These circuit boards have outstanding benefits that are required to boost your business. The most significant advantages of a 20 layer circuit board include-

Miniature Design

20 layer circuit boards are supportive of miniature designs. Here, signal and ground layers are placed on one another and connected through PCB vias. That’s why their designs are practical for smaller applications like mobile, laptops, etc.

High Durability

The 20 layer PCB design is highly durable like other multilayer circuit boards. Because of having a high layer count, its structure is robust. So, it can tolerate extreme temperatures.

You can utilize this PCB in different thermal conditions. These circuit boards deliver tremendous performance against electrical and mechanical pressures.

Current Conduction

Twenty-layer circuit boards deal with thick coppers. These PCBs consist of 2 oz, 4 oz, 6 oz, 10 oz, etc wider copper traces helpful for carrying high current loads. That means a 20 layer PCB structure supports high current conduction.

Since its design is highly tolerant to electrical forces, it remains functional while carrying overcurrents. This feature improves its use in high current applications to a large extent.

High Density

The 20 layer PCB structure allows the designer to place PCB components on its surface. Its higher component density promotes efficiency in high-speed PCB applications. This feature makes this PCB compatible with lightweight devices.

Cost-Effective

Multilayer circuit boards are costly compared to single or double-layer boards. But, a PCB having 20 layers offers impressive performance in versatile electronic appliances. So, this PCB ultimately turns into a cost-effective circuit board.

Functionality

20 layer PCB renders supreme functionality in advanced PCB-based applications. Due to its high functionality, it is used in HDI, high-frequency signal transfer, and high-power PCB projects.

20 Layer PCB Significant Advantages

How Do You Compare A 4 Layer With a 20 Layer PCB?

The significant differences between a 4 layer and 20 layer PCB are listed below for your convenience.

• 20 layer circuit boards offer better durability in the case of thermal pressures than a 4 layer PCB.
• A 20 layer PCB is more effective for conducting high current loads compared to 4 layer circuit boards.
• PCBs having 20 layers support heavy coppers. But, four-layer PCB is not supportive of high copper thicknesses.
• In the case of high-speed signal transmission, 20 layer circuit boards are more efficient than a 4 layer PCB.
• 4 layer PCB stackup is not adequate for miniature and high-density electronic applications. On the contrary, 20 layer PCBs are compatible with small-size PCB projects due to their flexible circuit designs.

4 Layer Printed Circuit Board

Which Factors Affect Thermal Properties Of A 20 Layer PCB?

The 20 layer PCB features significant thermal properties while used in various electronic devices. The prominent thermal properties of this PCB are

Glass Transition Temperature

The glass transition temperature (TG) refers to the temperature at which materials start losing their rigid phase. Its high value is preferable for all PCB-based applications. High TG 20 layer circuit boards TG value is more than 170⁰C. That means these PCBs can function at high operating temperatures.

Coefficient Of Thermal Expansion (CTE)

This feature indicates the expansion of PCB materials due to the initial change of temperature. Its lower value is supportive of the dimensional stability of a 20 layer printed circuit board. CTE is also related to the dielectric constant, a crucial factor in multilayer PCB manufacturing.

Decomposition Temperature (TD)

Decomposition temperature is the indicator of the required temperature for decomposing PCB materials. 20 layer circuit board materials offer a TD value of more than 330⁰C, which is quite impressive for electronic products.

Thermal Properties Of A 20 Layer PCB

What Are The Disadvantages Of 20 Layer PCBs?

The significant disadvantages of 20 layer PCBs are-

• The manufacturing of these circuit boards is very challenging because of their high layer counts. You need to pay close attention to achieve the maximum output in this case.
• The design of a 20 layer PCB stackup has more complications than a single-sided or double-layer PCB.

You should consult a trustworthy PCB maker to avoid complications in a 20 layer circuit board assembly. PCBMay is a perfect choice to solve your problems. So, contact us to ensure the trouble-free assembly service of this PCB.

Reliable 20 Layer Printed Circuit Board

How To Check The Design Rules Of 20 Layer PCBs?

Altium Designer is an effective software to check the design rules of a 20 layer PCB design. It consists of proper design tools to take care of 3D modeling and tuning of track length.

20 Layer PCB Design Rules Checking Through Altium Designer

You just need to go to the “Design” section of Altium Designer and select the design rules based on your layout. Then, you can conduct the “Design Rule Check” to find faults in your 20 layer PCB design.

You can check this video to learn more about designing multilayer PCBs in Altium:

What Are The Major Difficulties In Manufacturing A 20 Layer PCB?

Compared to a printed circuit board having low layer counts, 20 layer PCB features thicker layers, thinner dielectric layers, compact via placements, etc. That’s why it requires high-class attention to achieve the optimum output of 20 layer circuit boards. There are some difficulties in manufacturing this PCB. Such as

Layer Alignment

Ensuring proper alignment in high-layer circuit boards like 20 layer PCB is very challenging. The alignment tolerance of the outer layer is lower than that of the inner layers of a 20 layer circuit board.

Besides, operating temperature and humidity cause difficulties in maintaining perfect consistency in different core PCB layers. That’s why controlling the interlayer alignment in a 20 layer PCB becomes difficult for the manufacturer.

Arrangement Of Inner Layers

20 layer circuit boards are usually made of materials having high glass transition temperature, high dielectric strength, low relative permittivity, etc. These materials used in inner layers require top-notch design control and impedance stability.

These requirements increase difficulties in the fabrication of the circuit board. Besides, the probability of improper placement of the inner layer has been enhanced due to high layer count designs.

Drilling

20 layer PCB materials deliver high roughness during PCB drilling. Since a high layer count increases the copper thickness of a circuit board, drilling becomes more challenging.

Layer Coupling And Pressing

As the number of PCB inner layers increases, the pressing difficulties simultaneously increase. Again, it makes the layer coupling problematic.

It is required to consider thermal resistance and pressing programs when designing the laminated structure. But, the 20 layer PCB layer arrangement demands great attention to properly take care of these issues.

These factors make the production of a 20 layer circuit board difficult. You need to choose a trusted manufacturer to take care of its manufacturing. Then, it will be easier for you to overcome these challenges.

Difficulties In 20 Layer PCB Manufacturing

How Does A  20 Layer PCB Resist Oxidation?

Oxidation is a common problem for PCB applications. High moisture absorption is the leading cause of oxidation in multilayer PCBs. Twenty-layer circuit boards have a low moisture absorption rate while used in humid situations.

Different metals are used in preventing external contamination in PCB. ENIG, HASL, Gold Finger, etc are reliable metallic coatings of a 20 layer circuit board. The 20 layer PCB supports the implementation of surface coatings on its surface.

Ni, Ag, Au, etc metals create a protective layer outside copper traces. These layers act as barriers that inhibit moisture and water from hampering PCB components. Thus, the circuit board materials don’t get attached to moisture and remain free from oxidation.

What Is The Standard 20 Layer PCB Thickness?

This PCB is made of prepregs and cores. The average thickness of cores used in 20 layer circuit boards varies from 0.1mm to 0.3mm. The standard 20 layer PCB thickness is around 4.8mm.

But, it is compatible with heavy coppers. The most common copper thicknesses are 6 oz, 10 oz, 15 oz, 30 oz, etc. Its high board and copper thickness allow it to conduct heavy current loads. This circuit board also maintains dimensional stability.

20 Layer PCB Thickness

How Do You Compare Between SMT and THT In 20 Layer PCB Assembly?

The 20 layer PCB deals with SMT (Surface Mount Technology) and THT (Through-hole Technology). The main differences between SMT and THT are listed below.

• SMT is effective for miniature applications to compact PCB assembly. But, THT is not supportive of tiny devices.
• SMD is cost-effective. On the other hand, THT is expensive because of uses through-hole drilling mechanism.
• THT offers better robustness in 20 layer circuit board assembly. But, surface mount devices are more durable and functional than through-hole devices.

Surface Mount Technology In 20 Layer PCB Assembly

What Is Impedance Control In 20 Layer PCB Manufacturing?

Impedance control is a vital feature of a 20 layer PCB. It indicates that the specifications of PCB substrate are matched with trace dimensions and placements. It also ensures that the impedance of trace signals remains within a specific range.

Controlled impedance is a mandatory property of high-speed and high-frequency PCB applications. The following factors are vital in ensuring impedance control in 20 layer circuit boards.

• Dielectric thickness
• Relative permittivity
• Trace width
• Copper thickness

Watch this video about PCB stackup and impedance control for a better understanding:

20 Layer PCB Board Impedance Control

Which Factors Affect The Lifespan Of  A  20 Layer PCB?

Its lifespan is impressive. the 20 layer PCB remains functional for a long period. The following factors are essential to extend the lifespan of a multilayer PCB.

• Ensure excellent quality control.
• Maintaining user guidelines.
• Regular maintenance and inspection.
• Storage in proper thermal conditions.
• Use of high-class raw materials during fabrication.
• Avoid intense humidity.

20 Layer Printed Circuit Board With A Long Lifespan

What Is  The  Impact  Of  Dielectric Strength On A 20 Layer PCB?

The dielectric thickness means the required voltage to break the insulating properties of PCB materials. Its higher measurement is vital for the 20 layer PCB stackup. It is related to insulation that is an essential property of PCB materials.

Insulating properties are crucial for ensuring smooth current conduction and signal transmission in PCB layers. Low insulation causes overheating in multilayer circuit boards and creates severe electrical features damage.

That’s why dielectric strength significantly impacts 20 layer circuit board manufacturing. You need to apply raw materials with high dielectric strength and low DK value to ensure proper insulation.

20 Layer Circuit Board With A High Dielectric Strength

How Do You Select A Trusted Manufacturer Of 20 Layer PCBs In China?

A  trusted manufacturer is essential to ensure top-class manufacturing of a 20 layer PCB. But, how do you choose a reliable multilayer PCB maker in China?

Don’t worry. We are here with some suggestions so that you can make a proper choice about a 20 layer circuit board manufacturer. Let’s have a look.

• The manufacturer needs to be quite experienced in multilayer PCB assembly and designs. Experience makes a huge difference in manufacturing a 20 layer printed circuit board.
• A reliable PCB maker should have the ability to deliver cost-effective PCBs having high layer counts.
• It should have a well-structured factory with sufficient testing facilities. It is essential for instant manufacturing and functional tests.
• You need to check the PCB maker’s storage of raw materials. It will assure you of rapid customizations of different demands.
• It is imperative to have a group of skilled and experienced technicians for quality manufacturing of a 20 layer PCB. You must check the RoHS compliance of technicians.
• If you find that the manufacturer is certified by IPC and RoHS, you can rely on its efficiency.

We have been manufacturing IPC class 2 and 3 standard 20 layer PCBs for around 15 years. Our products are designed and fabricated considering the rules of RoHS.

We have a bunch of professional and skilled engineers to handle different custom solutions as per customers’ requirements. So, inquire us immediately to get the experience of high-quality multilayer PCB manufacturing at reasonable costs.

What Are The Major 20 Layer PCB Applications?

20 layer PCBs are used in numerous fields of the electronic world. Its impressive specifications make it compatible with basic and advanced electronic applications. The most significant applications of this multilayer circuit board include-

Computer Peripherals

20 layer circuit boards are widely applicable in producing different computers and their parts. Such as monitors, keyboards, printers, graphic cards, CPUs, etc.

The printed circuit boards used in these components of computers consist of a 20 layer circuit board. Besides, mouse PCB and image processing circuits are also made of this multilayer PCB.

Home Appliances

This PCB is ubiquitous in consumer electronics used in the home or commercial sectors. For example, smartwatches, remote controls, washing machines, calculators, etc. Besides, you can use this circuit board in lightings consisting of LED PCBs, electronic toys, music players, and many home appliances.

Automotive Devices

Automotive devices are supportive of PCBs, offering adequate robustness, along with flexibility. 20 layer PCBs are reliable for robust designs. Besides, these circuit boards are tolerant to extreme thermal and mechanical pressures.

That’s why you can utilize this multilayer PCB in automotive cars, robotics, conveyor belts, etc.

Telecommunication

20 layer PCBs have superior use in telecommunication industries. Its designs and features are supportive of high-frequency and high-speed signal transmission systems. It is widespread in GPS PCB, transmitter, satellite, servers, radars, etc.

Again, you can find this PCB in power amplifiers, antennas, different filters, digital signal processing systems, etc.

Medical Equipment

This circuit board is applicable in the following medical equipment.

• Sugar testing machine
• Radiology
• BP measuring machine
• MRI
• CT-scan
• X-ray
• Temperature testing equipment

Defense Instruments

The instruments used in the defense and military industry are supremely robust. 20 layer boards offer superior robustness and mechanical resistance to military equipment. Besides, navigation systems, aerospace equipment, etc are also composed of these multilayer PCBs.

20 Layer PCB Reliable Applications

Which Vias Are Used In 20 Layer PCB Stackups?

PCB vias are vital parts of PCB manufacturing. Vias have superior use in multilayer PCB designs. They ensure smooth transmission of heat in different PCB layers. Besides, PCB vias have vital impacts on current conduction and circuit board designs.

Different types of vias are used in 20 layer PCB stackup to optimize the design, such as blind vias, buried vias, through-hole vias, etc.

Blind Vias

Blind vias are used in connecting an outer layer to an internal layer. These vias never go through the whole circuit board. You can see the blind vias from only one end of the 20 layer PCB.

Buried Vias

Buried vias are not visible from any terminal of a multilayer PCB. These vias connect two internal PCB layers. They have no connection with the external layers of printed circuit boards.

Through-hole vias

In this case, via holes go through the whole circuit board. That means these vias join the top and bottom layers of this 20 layer circuit board. Through-hole vias can be found in two forms. They are plated through-hole (PTH) and non plated through-hole (NPTH).

Micro vias

Micro vias are usually used in 20 layer HDI PCBs. These vias have a small diameter, and they are drilled by using laser technology in most cases. In a 20 layer PCB stackup, micro vias are classified into two types.

One type of micro via is stacked via. Stacked vias are placed on one another in successive PCB layers. On the contrary, staggered micro vias have scattered positions in different layers.

These are important vias used in 20 layer PCB stackup. Proper placement of PCB vias improves the electrical properties of a multilayer circuit board.

Conclusion

20 layer PCBs have supreme uses in heavy-duty industrial applications. This multilayer circuit board’s features are beneficial to the advanced designs of digital electronics. If you are looking for a trustworthy 20 layer PCB manufacturer, PCBMay is the best option.

We can assure you of flawless designs and top-class materials for achieving a standard multilayer circuit board. We hope this FAQ guide contains sufficient information to answer your queries. Contact us to experience the hassle-free manufacturing of this circuit board.