VT-481 is a high-quality, versatile PCB material designed for applications that demand excellent thermal reliability, mechanical strength, and environmental sustainability.Reduces the likelihood of electrical failures, ensuring safe operation in critical applications.
In this article, we’ll discuss what really characterizes the Mid-Tg VT-481. The relevant information is available for pcb design engineers to refer to in the selection of materials, And you can also call QFPCB to discuss. QFPCB offers the best services when it comes to the Mid-Tg PCB Material, so please feel free to contact us.

What is the Mid-Tg VT-481 pcb material?
It is based on a mid-glass transition temperature (Tg) FR4.0 resin system, that TG is 150°C and providing a balanced thermal performance. The moderate Tg ensures stability and durability in environments where moderate to high temperatures are present. Its stability under temperature variations makes it a reliable choice for applications that experience consistent thermal cycling or are exposed to elevated temperatures during operation. It is a high-quality, versatile PCB material designed for applications that demand excellent thermal reliability, mechanical strength, and environmental sustainability.
The phenolic resin curing system used in VT-481 enhances the material’s mechanical strength and electrical stability while ensuring high thermal reliability. Moreover, it is compatible with lead-free soldering processes, making it suitable for modern, environmentally-conscious manufacturing environments that adhere to industry standards for lead-free products. VT-481 features high CAF resistance, minimizing the risk of filament formation between conductive layers, Maintains signal integrity in high-voltage circuits, crucial for long-term reliability. Reduces the likelihood of electrical failures, ensuring safe operation in critical applications.
VT-481’s low Z-CTE reduces the risk of mechanical stress and failure caused by temperature fluctuations. The material’s ability to expand and contract minimally in response to temperature changes enhances its dimensional stability, which is crucial for maintaining precise electrical connections and reducing the likelihood of warping or delamination.
The features of the Mid-Tg VT-481 pcb material

What are the benefits of the Mid-Tg VT-481 pcb material?
It is a high-performance PCB material designed to meet the stringent requirements of modern electronics, offering a blend of thermal reliability, mechanical strength, and environmental friendliness. The material combines the benefits of a mid-Tg FR4 resin system, phenolic cure technology, ensuring outstanding performance across various industries.
Mid-Tg FR4.0
It is based on a mid-glass transition temperature (Tg) FR4.0 resin system, providing a balanced thermal performance. Provides enhanced thermal stability during reflow soldering and thermal cycling, preventing deformation and maintaining structural integrity. Reduces warping and delamination risks, ensuring consistent board quality and reliability in multi-layer designs.
Phenolic Cure System & Lead-Free Compatibility
It is compatible with lead-free soldering processes, making it suitable for modern, environmentally-conscious manufacturing environments that adhere to industry standards for lead-free products. The phenolic cure system provides robust mechanical properties that ensure durability and reliability. Fully compatible with lead-free soldering processes, aligning with RoHS compliance and promoting environmentally friendly manufacturing practices.
Excellent Thermal Reliability
VT-481 offers superior thermal reliability, making it resistant to thermal degradation even under high-temperature conditions. This property is particularly critical for applications that generate significant heat, as the material maintains its integrity and performance over extended periods, even when subjected to frequent thermal cycling.
Low Z-CTE
VT-481’s low Z-CTE reduces the risk of mechanical stress and failure caused by temperature fluctuations. The low Z-axis coefficient of thermal expansion (Z-CTE) minimizes warping and delamination risks during manufacturing processes, Enhances reliability and consistency in multi-layer board designs. Minimizes stress on components during thermal cycling, improving long-term reliability.
CAF Resistance
VT-481 exhibits excellent resistance to conductive anodic filament (CAF) formation. CAF is a potential cause of circuit failure in high-density interconnects, and it is resistance to CAF formation helps ensure long-term reliability and robust performance in mission-critical applications.
UV Blocking
VT-481 offers effective UV-blocking properties, protecting the PCB from potential damage due to prolonged exposure to ultraviolet radiation. This is particularly beneficial for applications exposed to sunlight or other sources of UV light, ensuring that the material retains its structural integrity and electrical performance over time.
What are the applications of the Mid-Tg VT-481 pcb material?
VT-481 is ideally suited for a range of electronic devices, from computers and communication equipment to automotive systems and consumer electronics.
Computers
The excellent thermal reliability and low Z-CTE of VT-481 make it an ideal choice for use in computers and other data processing equipment. As these devices often experience significant thermal stress due to high-performance processors, VT-481 ensures that the PCB remains stable and durable over time, helping to prevent heat-induced failures.
Communication Equipment
VT-481’s reliable thermal performance and CAF resistance make it a strong candidate for communication equipment, where high-speed data transmission and longevity are crucial. Whether in base stations, routers, or other telecommunications devices, VT-481 provides the durability and electrical stability needed for consistent operation.
Instrumentation
For instrumentation applications that require precise and reliable performance, VT-481 offers a high level of mechanical and electrical stability. The material’s resistance to UV degradation and CAF formation ensures that sensitive instruments maintain their accuracy and performance, even after prolonged use in demanding environments.
Electronic Game Machines
It is well-suited for use in electronic game machines, where heat management and material durability are paramount. Its ability to withstand thermal cycling and UV exposure ensures that game machines can function reliably under varying conditions, providing a consistent user experience.
Automotive
The automotive industry demands materials that can withstand extreme temperatures and thermal cycling, making VT-481 an ideal choice. Its low Z-CTE and excellent thermal reliability ensure that automotive electronics and control systems remain stable and functional, even in high temperature environments typical of engine compartments and other critical areas.
VT-481 is a versatile and reliable PCB material that combines exceptional thermal performance, mechanical strength, environmental sustainability. that require reliable and environmentally compliant materials for advanced electronic systems. By choosing VT-481, manufacturers can achieve superior performance, enhanced safety, and extended product lifetimes.