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Isola IS420

Jarnistech > Isola PCB > Isola IS420
Isola IS420 PCB Board

Isola IS420 PCB laminate is a trusted and durable material widely used in the manufacturing of circuit boards. With its exceptional properties and performance, IS420 offers reliability, longevity, and compatibility with various industrial applications. This article explores the key features and advantages of Isola IS420, highlighting its suitability for demanding environments and its contribution to the production of robust and high-quality PCBs.

What Is Isola IS420?

IS420 is an exceptional FR-4 system designed specifically for demanding multilayer Printed Wiring Board (PWB) applications that require optimal thermal performance and reliability, with a remarkable glass transition temperature (Tg) of 170°C.

The IS420 laminate and prepreg products are meticulously crafted using a unique, high-performance multifunctional epoxy resin, which is reinforced with electrical grade (E-glass) glass fabric. This combination results in enhanced thermal performance and minimal expansion rates, surpassing those of traditional FR-4 materials, while still maintaining the ease of processing associated with FR-4. Moreover, the mechanical, chemical, and moisture resistance properties of the IS420 system either meet or exceed the performance standards set by conventional FR-4 materials.

To further enhance its compatibility with advanced inspection and imaging systems, the IS420 system exhibits laser fluorescing and UV blocking capabilities. This feature ensures maximum compatibility with Automated Optical Inspection (AOI) systems, optical positioning systems, and photoimagable solder mask imaging.

All in all, IS420 stands as a superior choice for high-performance PWB applications, offering exceptional thermal performance, reliability, and compatibility with cutting-edge inspection and imaging technologies.

Products Features of Isola IS420 PCB Materials

Industry Recognition:

●UL File Number: E41625
●Qualified to UL’s MCIL Program
●RoHS Compliant

Performance Attributes:

●Lead-free assembly compatible: The IS420 PCB materials are designed to be compatible with lead-free assembly processes, ensuring compliance with environmental regulations and industry standards.

●Processing Advantages: IS420 offers processing advantages, making it easier to work with during PCB fabrication and assembly.

●FR-4 process compatible: IS420 retains compatibility with the FR-4 process, allowing for seamless integration into existing manufacturing workflows.

Additional Features:

●UV blocking: The IS420 materials possess UV blocking properties, which prevent UV light from affecting the performance and reliability of the PCB. This feature ensures the longevity and stability of the PCB in various operating conditions.

●AOI fluorescence: The IS420 system exhibits fluorescence under Automated Optical Inspection (AOI) systems, enabling efficient and accurate inspection of the PCB during the production process. This fluorescence feature enhances the reliability and quality control of the PCB assembly.

The combination of these features makes Isola IS420 PCB materials an excellent choice for applications that demand high performance, reliability, and compliance with industry standards.UV blocking and AOI fluorescence.

Product Availability of IS420 PCB materials

IS420 PCB materials are available in various configurations to meet different application requirements. Here is the product availability information for IS420:

Standard Material Offering: Laminate

●Thickness: 2 to 93 mil (0.05 to 2.4 mm)
●Available in full-size sheet or panel form

Copper Foil Type

●HTE Grade 3
●RTF (Reverse Treat Foil)

Copper Weight

●Available in copper weights ranging from 2 to 20Z (18 to 70 μm)
●Heavier copper options are available
●Thinner copper foil options are available

Standard Material Offering: Prepreg

●Available in roll or panel form
●Tooling of prepreg panels is possible

Glass Fabric Availability

●E-glass: The laminate is reinforced with electrical grade E-glass fabric.
●Square weave glass: The laminate is also available with a square weave glass fabric option.

These options allow for flexibility in selecting the appropriate thickness, copper weight, and glass fabric type for specific PCB designs and manufacturing processes.

Application of IS420 PCB Substrate Materials

IS420 PCB substrate materials have several applications in various industries. Here are some specific applications for IS420:

1. RF Microwave: IS420 is suitable for RF and microwave applications due to its excellent high-frequency performance. It can be used in the manufacturing of wireless transmitters, receivers, and communication systems that operate at microwave frequencies.

2. Satellite and Broadcasting: IS420 is well-suited for satellite and broadcasting applications. It provides reliable signal transmission and reception capabilities, making it ideal for use in satellite communication systems, broadcasting equipment, and other related applications.

3. Aerospace: IS420 is widely used in the aerospace industry for its high-performance characteristics. It is used in the production of printed circuit boards (PCBs) for aerospace applications, including avionics systems, flight control systems, communication systems, and other critical electronic components.

These are just a few examples of the applications of IS420 PCB substrate materials. Its high-performance properties, such as excellent electrical performance, thermal stability, and reliability, make it suitable for demanding applications in various industries.

Why Isola IS420 Durable?

Isola IS420 is known for its durability due to several key factors:

1. High-Temperature Performance: IS420 has excellent thermal stability and can withstand high temperatures without significant degradation. It has a high glass transition temperature (Tg) and low coefficient of thermal expansion (CTE), which helps it maintain its dimensional stability and mechanical integrity even at elevated temperatures.

2. Mechanical Strength: IS420 is reinforced with high-performance glass fibers, which enhance its mechanical strength and resistance to mechanical stress. It has good flexural strength, tensile strength, and impact resistance, making it suitable for applications that require durability and reliability.

3. Chemical Resistance: IS420 exhibits good resistance to a wide range of chemicals, including acids, bases, solvents, and cleaning agents. This chemical resistance helps protect the material from degradation and ensures its long-term durability in harsh environments.

4. Moisture Resistance: IS420 has good moisture resistance, which prevents the absorption of moisture and minimizes the risk of delamination or degradation due to moisture exposure. This property is important for maintaining the material’s electrical performance and mechanical strength over time.

5. Environmental Compliance: IS420 is designed to meet various industry standards and environmental regulations. It is UL recognized, RoHS compliant, and compatible with lead-free assembly processes. These compliance factors contribute to the material’s long-term durability and suitability for environmentally conscious applications.

6. Process Compatibility: IS420 is compatible with standard FR-4 processing techniques and equipment, making it easy to integrate into existing manufacturing processes. Its compatibility with common PCB fabrication processes ensures consistent and reliable results during production.

7. UV Blocking and AOI Fluorescence: IS420 is designed with UV blocking and AOI (Automated Optical Inspection) fluorescence properties. These features enhance the material’s compatibility with automated inspection systems, optical alignment systems, and solder paste imaging, ensuring accurate and efficient quality control during the manufacturing process.

Overall, the combination of high-temperature performance, mechanical strength, chemical resistance, moisture resistance, environmental compliance, process compatibility, and specialized features like UV blocking and AOI fluorescence contribute to the durability and reliability of Isola IS420 PCB material.

Consider Factors for During Baking of Isola IS420 PCB Laminate

When baking Isola IS420 PCB laminate, there are several factors to consider to ensure proper handling and avoid any potential issues:

1. Temperature: Follow the manufacturer’s guidelines for the recommended baking temperature for IS420 laminate. The baking temperature should be within the specified range to achieve the desired results without causing any damage to the material. Ensure that the temperature is accurately controlled and monitored throughout the baking process.

2. Baking Time: Overbaking or underbaking can affect the material’s properties and performance. Adhere to the recommended baking time to ensure proper curing and stabilization of the laminate.

3. Moisture Removal: Baking is typically performed to remove any moisture that may have been absorbed by the laminate during storage or handling. Ensure that the baking process is sufficient to remove moisture effectively. Excessive moisture content can lead to delamination or other issues in the laminate.

4.Vacuum or Atmospheric Baking: Depending on the specific requirements, IS420 laminate can be baked in a vacuum or atmospheric environment. Vacuum baking is often preferred as it helps in removing moisture more effectively.

5. Proper Ventilation: Ensure that the baking process is conducted in a well-ventilated area to allow any volatile substances or by-products to dissipate. Proper ventilation helps in maintaining a controlled environment and prevents the accumulation of harmful gases or fumes.

6. Handling and Support: During the baking process, handle the IS420 laminate with care to avoid any damage or deformation. Use appropriate supports or fixtures to prevent warping or bending of the material. Ensure that the laminate is placed in a flat and stable position during baking.

7.Post-Baking Inspection: After baking, inspect the laminate for any signs of damage or issues. Check for delamination, discoloration, or any other abnormalities that may have occurred during the baking process.

What Factors Considerations When Handling Isola IS420 PCB Material?

When handling Isola IS420 PCB material, there are several factors to consider to ensure proper handling and usage:


Store the IS420 material in a controlled environment to maintain its quality and performance. It should be stored in a dry and cool area, away from direct sunlight, moisture, and extreme temperatures. Follow the manufacturer’s guidelines for storage conditions and shelf life.


Handle the IS420 material with care to prevent damage or contamination. Avoid bending or flexing the material excessively, as it can lead to delamination or cracking. Use clean gloves to prevent fingerprints and dirt from affecting the material’s surface.

3.Cutting and Machining:

When cutting or machining IS420 PCB material, use appropriate tools and techniques. Follow the manufacturer’s guidelines for recommended cutting methods, speeds, and feeds. Use sharp tools to ensure clean cuts and minimize stress on the material.


Prior to assembly or further processing, clean the IS420 material to remove any contaminants or residues. Use compatible cleaning agents and methods recommended by the manufacturer. Avoid using harsh chemicals or abrasive cleaners that can damage the material.

5.ESD Protection:

Take necessary precautions to prevent electrostatic discharge (ESD) when handling IS420 PCB material. Use ESD-safe workstations, tools, and equipment to minimize the risk of ESD damage. Follow ESD control procedures and guidelines to protect the material from static charges.


Ensure that the IS420 material is compatible with the other components and processes involved in the PCB assembly. Consider factors such as soldering temperature, compatibility with solder masks, and compatibility with surface finishes to avoid any issues during assembly or subsequent operations.

7.Waste Disposal:

Dispose of any waste material or scraps generated during the handling or processing of IS420 in accordance with local regulations and environmental guidelines. Follow proper waste disposal practices to minimize any potential environmental impact.

In Conclusion

Isola IS420 PCB laminate stands as a durable and reliable choice for circuit board applications. Its high-temperature performance, mechanical strength, chemical resistance, moisture resistance, environmental compliance, process compatibility, and specialized features make it a preferred material among manufacturers. With IS420, circuit board designers and manufacturers can confidently create robust and long-lasting electronic assemblies that meet industry standards and withstand harsh operating conditions. Embracing the benefits of Isola IS420 ensures the production of reliable and high-performance PCBs for a wide range of applications.

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