Everything You Need to Know About TU-662 Laminate and Prepreg


TU-662 laminate and prepreg is a high-temperature thermoplastic resin that can be used in many industries. TU-662 has many benefits over other materials. Including its high strength and toughness, low weight, and great resistance to heat, wear, and corrosion.

In this article, we’ll explain what TU-662 laminate is. Why it’s so popular in automotive applications, and what types of applications are possible with TU-662 laminate.




What is TU-662?

TU-662 is a versatile, high-performance material that can be used in a variety of industries. It is manufactured by Taiwan Union Technology Corporation and is commonly used in automotive and consumer electronics.

TU-662 laminate and prepreg is an advanced material that can be produced with different specifications depending on your needs. The product has high thermal resistance, low shrinkage, high dimensional stability, good mechanical properties, and is easy to process. This makes it ideal for use in many industries.

TU-662 Characteristics

This laminate and prepreg has many great characteristics that are useful in manufacturing your printed circuit boards. These are few characteristics that TU-662 possesses:

Radio Frequency

RF Characteristics

Radio Frequency

TU-662 laminate and prepreg have radio frequency characteristics that make it ideal for use in high-frequency systems. The material maintains its mechanical properties at frequencies. It has a high dielectric constant, which means it can be used in a wide variety of applications.

This means that the material can be used for RFID tags, RFID labels, and RFID cards. Also, other applications require high-frequency and high-power electromagnetic wave shielding.




The epoxy resin of TU-662 laminate and prepreg has a mid-glass transition temperature (Tg). This is ideal for manufacturing printed circuit boards. The epoxy resin can maintain its structural integrity at room temperature and higher temperatures.

Mid Tg laminate and prepreg like TU-662 is recommended for general use in any new projects that do not have any special requirements. It has good resistance to moisture and heat, which makes it a good choice for applications requiring long-term performance.

High Thermal Reliability

This laminate and prepreg has a high thermal reliability characteristic. The thermal conductivity can effectively improve the thermal resistance of the overall structure. This means that TU-662 can be used in a variety of environments and conditions.

UV-Block Characteristic

UV-block is an important characteristic of TU-662 laminate and prepreg. It is a measure of the material’s ability to block ultraviolet rays. If a material has a UV-block characteristic, it will not be affected by the sun’s ultraviolet rays. This can cause damage to many materials.

The UV block is an additional coating that is applied to the surface in order to prevent or reduce the amount of ultraviolet light which is harmful to the product.

AOI Compatible

AOI Compatible

AOI Compatible

This indicates that the laminate is able to be processed in an Automated Optical Inspection (AOI) system. This means that it can be inspected and passed through a machine that uses a laser to inspect the quality of the product.

This laminate and prepreg is compatible with the AOI process. This means that it can be used to produce parts that will pass inspection.

TU-662 Features

This is an excellent laminate and prepreg for manufacturing printed circuit boards. It has many great features that make it the perfect choice for this process.

Lead-Free Process Compatible

The TU-662 is a lead-free process-compatible solder paste with low melt to support soldering on the printed circuit boards and other components. This solder paste has been specially formulated for use in soldering applications. These are required to adhere to lead-free processes, according to RoHS directive. This solder paste can be used for both manual and automatic wave soldering processes.

Anti-CAF Property

The Anti-CAF property prevents a device from damaging its own circuitry. It does this by incorporating a feature that stops the device from being able to send signals when it detects damage to its own circuitry. This is a significant benefit for electronics manufacturing of printed circuit boards because it ensures that devices will continue to function as intended even after they are damaged or exposed to contaminants.

Optical Feature

The TU-662 is an optical-grade silicone that provides UV-blocking properties to printed circuit boards. It is a high-quality coating for use on the surface of PCBs. This can be applied by either spray or dip methods. The TU-662 gives excellent adhesion to the substrate and has high thermal resistance, low dielectric constant, and good aging properties.

High Interlayer Bonding Strength

This laminate and prepreg has excellent mechanical strength and can be used in many applications. It is designed for interlayer bonding. With strong adhesion to resin, high elongation, and tensile strength, as well as excellent water resistance.

It is designed to minimize the amount of resin that flows into the space between the layers. It thus provides excellent interlayer bonding strength.

Low Moisture Absorption

Low Moisture Absorption

Low Moisture Absorption

This means TU-662 will not absorb moisture from the air. This is especially important for electronics manufacturing of printed circuit boards because when the material absorbs water, it can corrode and degrade.

This is important because it ensures that the solder joints on your printed circuit boards will remain strong and reliable over time. This helps prevent corrosion and reduces the likelihood of cracks or breaks.

Fluorescence for AOI

Fluorescence is the process of absorbing light and then re-emitting it at a longer wavelength. This process is used in AOI (Automated Optical Inspection) to detect defects in printed circuit boards.

The TU-662 can detect fluorescent markings on the PCB by using a dedicated UV lamp. The UV lamp helps to identify any defects on the PCB, such as missing or extra solder joints, incorrect components, and more.

Best Thermal Resistance

PCB Thermal Resistance

Best Thermal Resistance

This is a measure of how well a material can resist heat flow. The lower the thermal resistance, the more effective the insulator becomes. This ensures that heat is not transferred from one area to another and helps to prevent overheating.

The TU-662 thermal pad is an excellent choice for printed circuit boards that need to maintain their performance in high temperatures. The pad’s thermal resistance can handle heat loads. That makes it ideal for use in applications where heat cannot be dissipated quickly enough by the underlying surface.

Superior Chemical Resistance

Chemical resistance is an important feature of a printed circuit board. It ensures that the board can withstand the environment it is installed in.

The material has high corrosion resistance and can withstand exposure to various acids, alkalis, and salts. This makes it an excellent choice for circuits that will be used in harsh environments. This material is used to provide insulation between rigid printed circuit boards and other structures such as metal cases or connectors. The material can withstand the harsh environments of typical PCBs.

FR-4 Compatible Processing Conditions

Compatibility to FR-4

FR-4 Compatible Processing Conditions

FR-4 is a type of fiberglass-reinforced epoxy laminate. It’s used in printed circuit boards because it’s a high-temperature, flame-retardant, and heat-resistant material that is also lightweight, making it an ideal choice for industrial applications.

TU-662 is an FR-4-friendly laminating and prepreg material that is designed to meet the needs of the printed circuit board industry, providing easy processing and excellent dielectric properties.

The TU-662 material can be used for multilayer boards, high-frequency applications, high-temperature applications, and many other circuit board applications.

Excellent Coefficient of Thermal Expansion

TU-662 laminate and prepreg have an excellent coefficient of thermal expansion. This characteristic allows the laminate to resist distortion during thermal cycling and heat aging, which are common in modern electronics. This can ensure that the laminates expand evenly during the cure.

TU-662 Applications

The applications of TU-662 include:

Consumer Electronics

Consumer Electronics

Consumer Electronics

This industry is one of the most demanding markets in the world. It is constantly evolving to meet the needs of an increasingly sophisticated consumer, who expects technology to be intuitive and easy to use. Consumer electronics products must be durable and reliable, with a long lifespan that meets the demands of daily life.

In addition to these product requirements, consumer electronics companies are faced with an ever-increasing need for speed: faster turnaround times and shorter lead times between development and production. This means that composite materials used in consumer electronics products must be able to handle this kind of high-volume production environment while still delivering the performance necessary for success.

TU-662 prepregs are designed specifically for this kind of high-volume production environment. They combine heat resistance, good electrical properties, and excellent mechanical properties with a fast cure rate—all in one easy-to-use package. The result is a composite material that delivers superior performance across all key consumer electronics product attributes: durability, reliability, fast processing times, and long lifespans.




This is also one of the most demanding industries to work with. It requires a high level of precision and reliability, as well as the ability to work at high speeds with little margin for error. When you need a material that can withstand such extreme conditions and still perform well, TU-662 prepreg becomes your best option.

TU-662 is being used in many different applications including aerospace, military aircraft, drones, satellites and missiles, sports equipment, medical devices and implants, transportation vehicles such as trains or automobiles, marine vessels such as boats, wind turbines, and many more.

The main reason why TU-662 is so popular among manufacturers is that it provides an excellent strength-to-weight ratio which means you can use less material while maintaining its quality standards of durability and strength. This means that it will last longer than other materials without losing its integrity over time due to wear-and-tear caused by repeated use over long periods of time.

TU-662 Industry Approvals

Industry Approvals are the most important part of the product. It is a testament to the quality of the product. It ensures that your customers will be satisfied with their purchase.

TU-662 laminate and prepreg are approved by these following industry standards:


The IPC-4101 standard was developed for the express purpose of ensuring that connectors are safe for use in the automotive industry. It ensures that the connectors have been tested and approved by a third-party laboratory. It should meet specific requirements regarding their design and materials.

This product has been tested and approved by the IPC-4101 standard, which is an international standard for the safe handling and disposal of electronic waste. This means that we have taken every precaution to ensure that your electronics will not harm the environment or humans when they reach their end-of-life.

FR-4.0 ANSI Grade UL Designation

This FR-4.0 ANSI Grade UL designation is designed to meet the needs of your next project by providing you with a high-quality, durable board that is easy to work with.

FR-4.0 is a standard grade of fiberglass-reinforced epoxy with a high resin content. It has low shrinkage, good impact resistance and toughness, and excellent electrical properties. FR-4.0 is commonly used for printed circuit boards because it has better thermal shock resistance than other grades of FR-4.

94V-0 Flammability Rating

The TU-662’s 94V-0 flammability rating is the highest possible rating for a component in the automotive industry. It means that it has passed the most stringent tests for ignition and burning. It will not catch fire when exposed to extreme heat or flames.


As you can see, TU-662 laminate is highly versatile and useful in the composite industry. The durability it offers makes this product a great choice for any potential application that requires high-stress resistance and extraordinary flexural strength in laminate. We hope this guide has allowed you to understand more about TU-662 laminate. This could help with your composites project as well.

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