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Ventec VT-901 PCB Laminate

Jarnistech > Ventec VT-901 PCB Laminate
Ventec VT-901 PCB Laminate

Ventec is a renowned global leader in the production of high-performance and superior-quality copper clad prepregs and laminates. Leveraging its subsidiaries in the United States and Europe, Ventec ensures localized services for its customers while maintaining its global reach. The company also offers comprehensive research, development, and testing capabilities, further enhancing its commitment to innovation and customer support.

Ventec’s PCB materials, including the Ventec VT-901 laminate, find wide-ranging applications in various industries.

The Ventec VT-901 PCB Laminate is a cutting-edge material that offers superior performance and reliability for a wide range of electronic applications. With its exceptional mechanical strength, temperature stability, and electrical properties, it has become a preferred choice among PCB manufacturers worldwide. This article will delve into the unique features and benefits of the Ventec VT-901 PCB Laminate, highlighting its versatility and its ability to meet the demanding requirements of various industries.

What is Ventec VT-901?

Ventec’s VT-901 is a highly reliable and versatile polyimide substrate, making it an ideal choice for PCB applications that demand exceptional mechanical strength and temperature stability. With a high glass transition temperature (Tg) and a low coefficient of thermal expansion along the Z-axis, this substrate ensures excellent dimensional stability even under extreme loads. Its high flex strength further enhances its durability.

Furthermore, the VT-901 offers extended T288 and T260 times, which are crucial for maintaining dimensional stability and integrity, particularly in demanding conditions. This Ventec material is formulated to be non-MDA and secure, guaranteeing low outgassing. It is available in both laminate and prepreg forms, providing flexibility in design and manufacturing processes.

The VT-901 excels in electrical performance as well, with outstanding electrical resistance and isolation resistivity against arcing, tracking, and dielectric breakdown. Its low dielectric constant and dissipation factor contribute to superior signal integrity, making it particularly suitable for computing and communications applications.

Properties of Ventec VT-901 PCB Laminate

The Ventec VT-901 PCB laminate possesses several qualities that make it a reliable and high-performance choice for electronic applications:

1.High thermal conductivity:

The VT-901 laminate has excellent thermal conductivity, allowing it to efficiently dissipate heat generated by components. This property is crucial for preventing overheating and maintaining the reliability of electronic devices.

2.Low CTE:

The laminate has a low Coefficient of Thermal Expansion (CTE), which means it expands and contracts minimally with temperature changes. This quality helps to prevent delamination and ensures the integrity of the PCB even under thermal stress.

3.High Tg:

The VT-901 laminate has a high Glass Transition Temperature (Tg), typically around 190°C. This indicates that it can withstand high operating temperatures without compromising its mechanical or electrical properties.

4.Dimensional stability:

The laminate exhibits excellent dimensional stability, maintaining its shape and size under various environmental conditions. This quality ensures consistent electrical performance and facilitates precise manufacturing processes.

5.Good electrical performance:

The VT-901 laminate offers desirable electrical properties such as low dielectric loss, high insulation resistance, and good electrical strength. These qualities contribute to reliable signal transmission and integrity in high-frequency and high-speed applications.

6.RoHS compliance:

The laminate is compliant with the RoHS directive, meaning it does not contain hazardous substances like lead, mercury, or cadmium. This makes it environmentally friendly and safe for use in electronic devices.

Application of Ventec VT-901 PCB Laminate

The Ventec VT-901 PCB laminate is suitable for a wide range of electronic applications that require high thermal performance, mechanical stability, and reliable electrical properties. Some common applications include:

1.Power Electronics:

The VT-901 laminate is often used in power electronic devices such as inverters, converters, and motor drives. Its high thermal conductivity helps in efficiently dissipating heat generated by power components, ensuring their reliable operation.

2.LED Lighting:

LED lighting systems generate heat, and effective thermal management is crucial for their performance and lifespan. The VT-901 laminate’s high thermal conductivity and low CTE make it an ideal choice for LED PCBs, helping to dissipate heat and maintain the longevity of the lighting system.

3.Automotive Electronics:

The automotive industry demands PCB materials that can withstand high temperatures, vibrations, and mechanical stress. The VT-901 laminate’s high Tg, low CTE, and excellent dimensional stability make it suitable for automotive applications such as engine control units, infotainment systems, and advanced driver-assistance systems (ADAS).


High-speed communication systems require PCB materials that offer low signal loss and reliable electrical performance. The VT-901 laminate’s good electrical properties, such as low dielectric loss and high insulation resistance, make it well-suited for applications in telecommunications infrastructure, including base stations and network equipment.

5.Aerospace and Defense:

The aerospace and defense industries have stringent requirements for PCB materials in terms of reliability, durability, and thermal management. The VT-901 laminate’s high Tg, low CTE, and excellent thermal conductivity make it suitable for applications such as avionics, radar systems, and military electronics.

6.Industrial Electronics:

Industrial environments often involve high temperatures, vibrations, and harsh conditions. The VT-901 laminate’s thermal performance, mechanical stability, and electrical properties make it suitable for various industrial applications, including automation systems, control panels, and power distribution units.

Is Ventec VT-901 PCB Laminate Affected by Relative Humidity?

The Ventec VT-901 PCB laminate is designed to have minimal impact from relative humidity. It has a low moisture absorption rate, typically less than 0.15%, which means it is relatively unaffected by changes in humidity levels. This property helps to maintain the dimensional stability and electrical performance of the laminate even in humid environments.

However, it is still important to note that excessive exposure to moisture and high humidity can potentially impact any electronic component or material, including PCB laminates. Prolonged exposure to moisture can lead to delamination, reduced electrical insulation properties, and even corrosion of metal components on the PCB.

To ensure the longevity and reliability of the Ventec VT-901 PCB laminate, it is recommended to follow proper handling and storage practices. This includes storing the laminate in a dry environment, using appropriate moisture barrier bags or containers, and avoiding exposure to excessive humidity during manufacturing, assembly, and operation of electronic devices.

Additionally, conformal coatings or encapsulation materials can be applied to further protect the PCB from moisture and humidity-related issues. Regular testing and inspection for any signs of moisture-related damage are also essential to detect and resolve any potential issues early on.

What is the Desmearing Process of Ventec VT-901 PCB Laminate?

The desmearing process is typically required for PCB laminates that have been drilled, as it removes the smear layer that forms on the hole walls during the drilling process. The Ventec VT-901 PCB laminate materials can undergo a desmearing process to ensure proper adhesion and reliability of subsequent processes such as plating and soldering.

The desmearing process involves the use of a chemical solution or plasma treatment to remove the smear layer. Here is a general overview of the desmearing process for Ventec VT-901 PCB laminate:

1. Cleaning: Prior to desmearing, the drilled PCB panels are usually cleaned to remove any loose debris or contaminants from the drilling process. This can be done using a cleaning solution or a combination of ultrasonic cleaning and rinsing.

2. Desmearing: The desmearing process can be performed using either a chemical solution or plasma treatment.

●Chemical Desmearing: In this method, a desmearing solution containing etchants and surfactants is applied to the drilled holes. The solution helps to dissolve and remove the smear layer, exposing the clean hole walls. Different desmearing solutions and processes are available, and the specific one to use depends on the manufacturer’s recommendations and process requirements.

●Plasma Desmearing: Plasma treatment is another option for desmearing. The PCB panels are exposed to a low-pressure plasma environment, which uses ionized gas to remove the smear layer. Plasma desmearing is a dry process that can be more environmentally friendly and efficient compared to chemical desmearing.

3. Rinsing and Drying: After desmearing, the PCB panels are thoroughly rinsed with deionized water to remove any remaining desmearing solution or residues. They are then dried to ensure the removal of moisture before moving on to the next processing step.

It is important to follow the manufacturer’s recommendations and process guidelines for the desmearing process of Ventec VT-901 PCB laminate to achieve optimal results and ensure the integrity of the laminate and subsequent processes.

Moisture Absorption in Ventec VT-901 Laminates and Prepregs

Moisture absorption can be a concern for VT-901 laminates and prepregs, as with any other PCB materials. While VT-901 laminates and prepregs have a relatively low moisture absorption rate, it is still important to take precautions to prevent moisture ingress and minimize its impact on the material and PCB.

Excessive moisture absorption can lead to various issues, including dimensional changes, reduced electrical insulation properties, and delamination. Moisture can also cause problems during soldering processes, such as the formation of solder voids or the release of steam, which can affect the reliability of the PCB.

To mitigate moisture-related concerns, here are some best practices:

1. Storage: Store VT-901 laminates and prepregs in a dry environment with controlled humidity levels. Use moisture barrier bags or containers to protect the materials from moisture ingress.

2. Handling: Handle the materials with clean, dry hands to avoid introducing moisture. Avoid exposing the materials to high humidity or moisture sources during handling and processing.

3. Pre-baking: If the VT-901 laminates or prepregs have been exposed to high humidity levels or stored for an extended period, a pre-baking process may be required to remove any absorbed moisture. Follow the manufacturer’s recommendations for the appropriate pre-baking conditions.

4. Sealing: After PCB fabrication, consider applying conformal coatings or encapsulation materials to provide an additional barrier against moisture ingress. This can help protect the PCB and prevent moisture-related issues in harsh environments.

Regular testing and inspection for moisture-related damage, such as delamination or changes in electrical properties, are also important to ensure the reliability of the PCB. Follow the manufacturer’s guidelines and recommendations for proper handling, storage, and processing of VT-901 laminates and prepregs to minimize the impact of moisture absorption.

How Do You Choose Ventec VT-901 Base Laminate?

Choosing the Ventec VT-901 base laminate involves considering several factors to ensure it meets the specific requirements of your PCB design and application. Here are some key considerations to guide your selection process:

1.Electrical Properties:

Evaluate the electrical performance requirements of your PCB design, such as dielectric constant (Dk), dissipation factor (Df), and electrical insulation properties. Consult the datasheet or technical specifications of the VT-901 laminate to ensure its electrical properties align with your design needs.


Determine the required thickness of the base laminate based on the overall thickness requirements of your PCB. VT-901 is available in various thickness options, so select the one that matches your design specifications.

3.Thermal Performance:

Consider the thermal properties of the VT-901 laminate, such as thermal conductivity and coefficient of thermal expansion (CTE). These properties are crucial for heat dissipation and can impact the reliability and performance of your PCB, especially in applications with high power or temperature variations.

4.Mechanical Strength:

Evaluate the mechanical strength and rigidity of the VT-901 laminate to ensure it can withstand the mechanical stresses and requirements of your PCB application. Consider factors such as flexural strength, tensile strength, and impact resistance.

5.Environmental Considerations:

Assess the environmental conditions your PCB will be exposed to, such as temperature, humidity, and chemical exposure. Verify that the VT-901 laminate has suitable resistance to these environmental factors to ensure long-term reliability.

6.RoHS Compliance:

If compliance with RoHS (Restriction of Hazardous Substances) regulations is necessary for your application, confirm that the VT-901 laminate meets the required standards.

7.Manufacturer Support:

Consider the reputation and support provided by the manufacturer. Ventec is a well-known and trusted manufacturer, and their technical support and expertise can be valuable in selecting the right VT-901 laminate for your specific design requirements.


the Ventec VT-901 PCB Laminate stands out as a high-performance material that exceeds industry standards. Its exceptional mechanical strength, temperature stability, and electrical properties make it an ideal choice for applications where reliability and signal integrity are paramount. With Ventec’s commitment to continuous research and development, customers can trust in the reliability and performance of the VT-901 laminate for their most critical projects. As technology continues to advance, Ventec remains at the forefront, providing innovative solutions that meet the evolving needs of the electronics industry.

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