Your One-Stop Kapton PCB Manufacturer Since 2008

Your Best Kapton PCB Supplier

If you are looking for the most reliable manufacturer of Kapton PCB, PCBMay is your perfect choice. We are confidently supplying PCB components in different countries worldwide. PCBMay is capable of providing all your Kapton PCB needs at affordable prices.

PCBMay manufactures different types of Kapton PCB. It is applicable for military devices, medical devices, mobile gadgets, and more. We are capable of providing all your demands in this business. Our Kapton PCB offers outstanding quality and features. PCBMay is developing this component using our advanced technology manufacturing system.

PCBMay produces highly effective and stable Kapton PCB for high temperatures. It is capable of performing in both cold and high temperatures. This product is excellent in mechanical, electrical, and physical properties, suitable for different industries. We also make sure that our Kapton PCB is chemical resistant.

We are improving the flexibility of our Kapton PCB that allows you to have a more comprehensive application. This PCB component features more efficiency, better wire connection, high reliability, miniaturization, good solidarity, and thermal management. All of these features will help you with your market sales.

Giving you the superior quality Kapton PCB is our primary objective. Our main goal is to help you find your ideal products for a competitive cost. From designing, layout, and developing complete assembly of Kapton PCB, PCBMay offers services. Our skilled employees carefully test each produced product.

As an ISO9001 certified company, PCBMay operates strict quality control to ensure every product has world-class quality. We commit ourselves to avoid making defective products and only produce quality. Moreover, PCBMay supplies Kapton PCB worldwide. You can have a better business with our support.

PCBMay is an advanced company capable of handling all your OEM orders. You can send your orders and receive a quote immediately.

Kapton PCB: The Ultimate FAQ Guide

Kapton PCB has become a reliable option to use in high temperatures. Its useful materials and enormous types make this PCB the most widely used circuit board in the present electronics world. PCBMay is a trustworthy supplier and manufacturer of this effective PCB.

But, are you familiar with its functions, features, or manufacturing process? We are here to inform you of the details about Kapton PCB. This FAQ guide will answer all your queries in a simple way.

We hope it will help you to experience worthwhile manufacturing. Let’s make a move.

What Is Kapton PCB?

Kapton PCB is a robust electronic circuit. It is composed of polyimide materials that have a commendable reputation for being operative in extreme temperatures by controlling heat. These materials are formed through a condensation polymerization reaction between amide and anhydride at a high temperature and pressure.

Kapton PCB

This amide bond is useful for resisting chemical contamination and rigidity. Thus, you can use this circuit board in various harsh high-volume PCB applications. Besides, It is good for lightweight electronic gadgets because of its dense component placement. Most of all, its superb temperature control turns it into the most widely utilized circuit in recent days.

Which Types Of Kapton PCBs Are Used Widely?

Kapton PCB has versatile types which are widely used in the military industry, mobile phones, medical sectors, etc. Its most prominent types are-

• Round PCB
• Flexible PCB
• Blank single PCB
• Medical Controller Flex PCB
• Kapton film PCB
• Kapton heater with adhesive PCB
• Multilayer PCB

Blank Single Kapton PCB

What Is The Elongation Of Kapton PCB?

Elongation refers to the length increase of materials due to temperature change. It indicates the dimensional stability of PCB materials. The elongation is 72% for 1 mil thickness of Kapton PCB film at 73⁰F.

This property depends on the quality of materials and temperature. Like it increases to 83% at 392⁰F. Controlled elongation promotes the performance of this PCB. so, you should consider temperature change to keep this feature under the threshold value.

How Does A Kapton PCB Ensure Mechanical Stability?

Kapton PCB delivers outstanding mechanical stability in electronic gadgets. It is possible for highly operative polyimides. These materials have superior resistance against various mechanical forces.

Besides, the low coefficient of thermal expansion and high glass transition temperature of Kapton polyimides are useful for handling temperature exposures. Its effective heat dissipation system promotes thermal control. Thus this PCB is durable in versatile temperatures.

Stable Kapton PCB

Again, it consists of copper foils along with the polyimide film. This combination promotes mechanical stability in single-sided and double-sided Kapton PCBs. Its high tensile strength also improves its stability in harsh atmospheres.

Is Kapton PCB Better Than FR-4 PCB?

Kapton and FR4 are very common and effective PCB construction materials. Kapton PCB has better features compared to FR4 PCBs. That’s why its applications have versatility in many aspects.

Here, a comparative analysis between these two is given for you. Let’s have a look.

Tensile Strength

Kapton PCB offers higher tensile strength than FR4. Its tensile strength is around 231 MPa. On the contrary, it is 70 MPa for FR4 materials. That means Kapton polyimide renders higher strength in electronic applications.

Working Temperature

The highest working temperature of this PCB is around 260⁰C. But, it is 110⁰C in the case of FR4 PCBs. So, the use of Kapton circuit boards is more in extreme thermal conditions.

Durability

Kapton PCB provides higher mechanical stability and thermal resistance in high-volume PCB projects. Its chemical contamination is also low. That’s why it is more durable than FR4 materials.

FR4 VS Kapton PCB

Functionality

This PCB has superlative functionality in single and multilayer circuits. Again, one-sided and double-sided Kapton PCBs are also very worthwhile due to their high robustness.

Thermal Management

Its components and via management are more impressive than FR4-based circuit boards. Besides, it has better thermal cycling amidst cold and extremely hot weather. Fr4 materials can’t match Kapton polyimide’s quality in aerospace equipment.

Now, it should be clear to you why Kapton is better than FR4 in PCB applications.

What Is The Effective Surface Finish Technology Of Kapton PCB?

Kapton PCB with ENIG surface finish develops the thermal resistance of electronic devices. It is the most suitable surface finish technology for this PCB. Because-

• ENIG widens the PCB surface area. So, component placement becomes easier and more effective.
• It is chemical-resistant and impedes oxidation on the PCB surface. That’s why the component’s longevity increases significantly.
• Electroless Nickel Immersion Gold resists corrosion of the PCB surface.
• It promotes solderability. So, solder connections become stronger and more effective for current conduction.
• This process is ecologically more effective than other surface finish technologies.
• ENIG is useful for Kapton flexible circuit boards.

Kapton PCB ENIG Surface Finish

Besides, HASL and ENEPIG are also viable in this PCB operation. You should apply an appropriate surface finish that matches your requirement. Otherwise, you won’t get the desired output from this PCB.

How To Create A Kapton PCB Solder Paste Stencil?

You need to arrange some hardware like Kapton PCB film and stencil material in this case. Then just follow the instructions given below-

• First, create a Gerber file for the stencil. You have to use design software like EAGLE, Altium Designer, etc to create this file.
• Now, set up a PDF printer and transform the Gerber file to PDF format.
• Then, print the PDF file. It is a vector file. After completing the printing process, clean up the PDF.
• Add a jig outline to place your circuit board.
• Then, color the cuts based on your requirements by using the software.
• Now, use a laser cutter to print the solder paste stencil.
• Cut the jig.
• Apply a laser on the stencil.

That’s how you can easily create a Kapton PCB solder paste stencil.

Kapton PCB Solder Paste Stencil

What Is The UL94 Rating Of Kapton PCB?

UL94 is a trustworthy standard to verify the flammability of different materials. It has 6 classifications in terms of materials burning time, dripping, behavior during the burning, etc.

Kapton PCB achieves a V-0 rating in the UL94 standard. It indicates that the burning will continue for the highest 10 seconds when the vertical flammability test runs. Again, there is no dripping of Kapton PCB specimens during the burn. That means its materials show impressive output against the flame.

Kapton PCB UL94 V-0 Rating

But, uncontrolled current flow damages Kapton films of different thicknesses through burning. That’s why you should ensure the consistency of electricity while operating this PCB in high-density PCB projects.

Is Kapton PCB Compatible With Multilayer Design?

Yes. Its compatibility with multilayer designs is beyond question. In a multilayer PCB Stackup, it is necessary to ensure different relative permittivity in separate PCB layers. Besides, effective use of through-hole vias, buried vias, blind vias, thermal vias, etc makes a multilayer design successful.

Kapton PCB fulfills all the requirements for this type of design layout. This PCB contains polyimide materials that have a wide range of dielectric constant values. So, you can maintain the dielectric properties in each layer of this PCB. Again, its impedance stability is more effective than single-layer designs.

Most noteworthy, it contains worthwhile surface finish technologies that make the PCB surface wide. So, you can afford to place multiple vias based on your design. It is helpful for proper thermal dissipation. So, there is no doubt about its use in multilayer stack up.

Kapton PCB Multilayer Design

What Is The Working Temperature Of A Kapton PCB?

Kapton PCB is a highly recommended choice for versatile electronic appliances. It renders the required strong balance of electronic, mechanical, and thermal properties over a huge scale temperature.

Generally, this PCB remains functional from extreme cold to very high thermal phases. Its highest working temperature is around 260°C. Doesn’t it sound outstanding to you?

Nowadays, advanced electronic devices are becoming smaller. So, it is a crying need to make a PCB compatible with different thermal states.

High-Temperature Kapton PCB

Kapton PCB materials ensure effective thermal management in the PCB surface. This PCB is supportive of placing a sufficient number of PCB thermal vias that distribute the heat with great effectiveness.

Does A Kapton PCB Have Rigid-Flex Properties?

Kapton PCB consists of rigid-flex properties. That means it renders sufficient rigidity and dimensional flexibility in many applications as per the Projects’ demand. It is a huge advantage that enhances its uses in military and medical instruments.

Kapton flexible PCBs are useful for designing electronic devices having unusual shapes. You can bend this PCB to a certain limit. Besides, rigidity is important for being resistant to mechanical pressures.

Rigid-Flex Kapton PCB

Here, plated through-holes are applied to connect the flexible PCB layers which are placed between rigid layers. This PCB ensures high durability in enormous high-density projects. Watch the following video to get a better idea about this feature:

What Are The Different Types Of Polyimide Used In Kapton PCB?

Polyimides are the basic materials of Kapton PCB. These polyimides are a product of condensation polymer reactions. Concerning the additives and chemical compounds, different types of polyimides are formed which are used in this PCB. Such as:

2G Polyimide

Second-generation polyimides are also known as pure polyimides. These materials provide temperature control and thermal stability in PCB applications.

Low-flow Polyimide

These polyimides are composed of resins and flow-retarding materials. They promote rigidity in electric circuits.

Kapton Polyimide PCB

Filled Polyimide

It contains a filler along with polyimides. This type of polyimide increases flexibility greatly. Besides, shrinkage is reduced due to the use of filled polyimide.

3G polyimide

Third-generation polyimides develop the flammability of Kapton PCB. These materials have better use in low temperatures.

What Is The Thermal Expansion Coefficient Of A Kapton PCB?

The coefficient of thermal expansion (CTE) has numerous effects on the performance of Kapton PCB. It indicates the rate of dimensional change due to the unit increase of temperature.  So, you can understand that its higher value is not good for thermal stability.

CTE is measured at different axes. But, its Z-axis value is the most influential in the PCB projects. Kapton PCB has a low CTE at the Z-axis direction. This is around 200 ppm/°C from -14 to 38°C working temperatures.  It is an indicator of the optimum durability of this PCB.

Kapton PCB Low CTE

That’s why you can apply this PCB in a massive range of operating temperatures. It increases its compatibility in low and high-volume applications.  Extreme thermal conditions can’t deviate from its thermal features to a large extent.

How Does Kapton PCB Resist Chemical Contamination?

Kapton PCB is free from chemical contamination. Here, polyimide materials are highly resistant to moisture and water. Besides, it is supportive of various conformal coating systems. These coatings impede the entrance of moisture and dust. That’s why there is a low chance of entering chemicals into this PCB.

What Are The Benefits Of Kapton PCB?

Kapton PCB is used in countless fields of electronics. It happens because of its huge benefits and useful features. The most noteworthy benefits of this circuit board are explained here.

High Flexibility

This PCB is a perfect combination of higher flexibility and rigidity. Its rigid-flex characteristics enable you to bend it concerning your design. But, it never compromises its conductivity due to its high flexibility.

Impressive Temperature Control

Temperature control is the most effective advantage of this PCB. It has a massive range of operating temperatures. Low relative permittivity ensures a low CTE and high glass transition temperature in Kapton materials.

These features are effective for minimizing the pressures caused by the increased temperatures. You can also use this PCB for a long period due to proper temperature control.

Durability

Kapton PCB offers superior durability which is unlike other circuit boards. Its materials have higher resistance against chemical doping. Again, this PCB has a high tensile strength which indicates its high mechanical stability.

Kapton PCB High Functionality

High Functionality

This printed circuit board is extremely functional in single-sided, double-sided, multilayer, etc designs. Its high flexibility and effective component mounting process allow miniaturization of electronic devices.

Besides, it improves the data propagation rate in applications. You can use this PCB to lessen the weight of the device.

Why Do You Need To Consider The Tensile Strength In Kapton PCB Design?

Tensile strength refers to the maximum stress that a substance can tolerate before being fractured. It is a reliable factor to get an idea about the mechanical stability of sufficient PCB materials. The ultimate tensile strength of Kapton PCB is around 231 MPa for 0.05mils at 23°C temperature.

It is huge compared to other PCB materials used in similar applications. This advantage is constantly increasing its uses where high robustness is the primary requirement.

Kapton PCB High Tensile Strength

Usually, Kapton PCB materials are highly durable against mechanical and thermal stresses. Its effective dielectric constant has great significance in this case. This feature improves the dimensional stability in extreme atmospheres. That’s why you should take care of the tensile strength while designing a Kapton PCB.

What Are The Applications Of A Kapton PCB?

Kapton PCB has immense use in versatile fields. The most prominent applications of this PCB are-

• Military devices
• Aircraft electronics
• Medical testing equipment
• Mobile communication
• Mechanical devices
• Peripheral gadgets
• Digital devices
• Laptop

Kapton PCB Applications

What Are The Drawbacks Of Kapton PCB?

In spite of providing numerous benefits, Kapton PCB has some negative sides as well. Its most notable drawbacks are-

• It is vulnerable to burning issues. Excessive election conduction overheats this PCB that hampers the functionality.
• Its solderability is not always up to the mark.
• Its cost is a little bit high.

Contact us immediately. We have been engaging in designing and supplying Kapton PCB of the highest quality for around 15 years. We manufacture different types of PCBs which are free from such limitations.

Which Factors Do You Need To Consider While Choosing A Kapton PCB?

Choosing the best Kapton PCB is one of the most essential parts of your projects. You have to focus on some factors while making this choice. Such as:

• Quality of the materials.
• Effective cost
• Low CTE
• High TG ( Glass transition temperature)
• Reliable supplier
• Dielectric constant
• Ingress protection (IP) rating. IP65, IP66, etc are effective for moisture and dust resistance.
• Impact protection (IK) rating. Usually, PCB materials having an IK rating of more than 8 are supremely useful in multiple industries.
• High tensile strength.
• Customization facilities.
• Easy replacement process.

What Is The Standard Thickness Of Kapton Double-sided PCB?

Kapton double-sided PCB has good control over its current conduction and heat management system. Its dimensional stability is also high. The standard thickness of this PCB varies from 0.025mm to 0.55mm.

Kapton PCB Standard Thickness

This PCB renders high reliability and mechanical stability due to having high-quality polyimides as the base materials.  Its standard thickness enables it to fulfill all of the quality control processes with great effectiveness.

How To Choose The Best Kapton PCB Manufacturer In China?

The electronics sector is very competitive in the present day. So, it is not so easy for a consumer to choose the best PCB manufacturer. But, don’t worry. We are here with some instructions to find a reliable manufacturer for Kapton PCB.

PCB Assembly Experience

A manufacturer having a huge experience in Kapton PCB assembly is considered reliable. If it has a long history of manufacturing, it can be aware of the minute complications of this PCB. It promotes the possibility of getting a flawless Kapton circuit board.

Certification

When you choose a manufacturer that is certified by reputed standards like IPC, RoHS, etc, you can be sure about its credibility. These certificates assure you of high-standard PCB products and materials. That’s why it is a crucial factor in this case.

Custom Solution

Consumers are looking for having multiple features in the same PCB. Customization is the best solution for this demand. A trustworthy manufacturer must have the facilities to render custom solutions to numerous requirements.

For this reason, there is no alternative to skilled and professional technicians and a well-equipped factory. Then you can solve any kind of PCB-related problems quickly.

Price

It is another influential factor. You should choose a manufacturer that is capable of providing Kapton PCB products at reasonable prices. Otherwise, you can’t meet the budget demand of your projects.

Customer Care

Smart customer care service along with a well-designed website is a sign of a high-profile manufacturer. It should have a full-time customer and sales service.

We have professional technicians to deliver one-stop ODM service of Kapton PCB. Our PCBs are Class 2 standard according to IPC. That’s why contact us and enjoy the best PCB performance at affordable costs.

Why Is The Dielectric Strength Important For Kapton PCB Materials?

Dielectric strength plays a vital role in maintaining sufficient insulation in Kapton PCB materials. This property refers to the highest electric potential that is required to break the insulating barrier in the PCB surface. That means the electron conduction becomes out of control if the voltage crosses the dielectric strength.

Kapton PCB materials ensure high insulating properties while carrying heavier current loads. Its typical value of the dielectric strength is 8000 V/mils for 0.05mils film gaze. This higher value makes it easier for the designer to maintain the balanced current flow and impedance control in these PCB applications. So, high dielectric strength is extremely important for a well-designed PCB assembly.

Excess current conduction causes overheating in the PCB layers. It lessens the longevity of electric circuits to a great extent. That’s why you need to consider the dielectric strength during the design of this PCB.

Conclusion

Today advanced electronic devices are ruling the world of technology. Kapton PCB has brought out a dimensional change in electronic appliances. Its reliable fabrication process, as well as versatile advantageous features, make large-scale productions easier.

PCBMay delivers the most reliable manufacturing service of this PCB with the highest supremacy. This FAQ guide touches almost every corner related to Kapton PCB. We hope you won’t face any difficulties in future about its assembly.

If you have more questions, contact us and stay tuned.