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High TG180 PCB

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High TG180 PCB Circuit Boards

The TG 180 PCB board is a highly versatile and reliable piece of technology that is widely used in various industries. PCB stands for Printed Circuit Board, and it plays a crucial role in connecting and supporting electronic components in electronic devices. The TG 180 PCB board is designed with advanced features and materials to meet the demanding requirements of modern electronics.

The TG 180 PCB board offers exceptional performance and durability, making it an ideal choice for applications that demand high precision and reliability. Its compact size and lightweight design make it suitable for use in compact electronic devices, such as smartphones, tablets, and wearables. It provides a stable platform for mounting and interconnecting electronic components, allowing them to function seamlessly.

What Is PCB TG?

The temperature at which the PCB substrate, composed of glass fiber, undergoes a transition from a solid to a liquid state is known as the glass transition temperature (TG) of the PCB. This critical temperature determines the rigidity and stability of the PCB substrate.

FR4 PCBs are classified into different categories based on their TG values. These categories include normal TG PCBs, medium TG PCBs, and high TG PCBs. The TG values are determined through a Differential Scanning Calorimetry (DSC) analysis, which measures the thermal properties of the PCB substrate.

By classifying FR4 PCBs based on TG values, manufacturers can select the appropriate PCB type that suits the specific requirements of their applications. Normal TG PCBs have a lower TG value and are suitable for applications with moderate temperature requirements. Medium TG PCBs possess a higher TG value, offering improved thermal stability and performance in applications that experience slightly elevated temperatures. High TG PCBs, with the highest TG values, are specifically designed for applications that demand high-temperature resistance and reliability.

PCB TG TypesTG Values (DSC)Applications
Normal TG PCBs130℃, 135℃, 140℃Computer, communication equipment, instrumentation, game player, TV, VCR, LCD, etc.
Medium TG PCBs150℃, 155℃Computer, communication equipment, automotive, consumer electronics, electronic game machine, heavy copper applications, etc.
High TG PCBs170℃, 180℃, 185℃Automotive, medical, aerospace & defense, industrial control, routers, servers, workstations, precision instruments, power supply, CPU, consumer electronics, etc.

The temperature range within which an FR4 PCB can effectively operate is directly influenced by the higher glass transition temperature (TG) of the PCB laminates. Exceeding the glass transition point causes the PCB to become pliable and undergo deformation. Consequently, the mechanical and electrical performances of the PCB deteriorate, rendering the circuit board unreliable.

By understanding the TG classifications, PCB manufacturers can ensure the selection of the most suitable FR4 PCB type, enabling them to meet the thermal demands and performance expectations of various electronic applications.

TG 180 PCB Board Features

1. The utilization of Tg 180 PCB boards offers notable advantages such as enhanced assembly density, reduced size, and reduced weight.

2. The high assembly density characteristic of Tg 180 PCB boards leads to a reduction in the number of wires between components, consequently improving the overall reliability of the board.

3. Tg 180 PCB boards provide the flexibility to incorporate a greater number of wiring layers, thereby increasing the design flexibility of the circuit.

4. Tg 180 PCB boards have the capability to form circuits with specific impedance requirements.

5. The material composition of Tg 180 PCB boards makes them highly suitable for high-speed transmission circuits.

6. Tg 180 PCB boards can accommodate the inclusion of shielding layers for circuits and magnetic circuits, as well as incorporate metal core heat dissipation layers, meeting the demands for shielding, heat dissipation, and other specialized functions.

7. Tg 180 PCB boards are characterized by ease of installation and exceptionally high reliability.

Applications of TG180 PCB

TG180 PCBs find applications in various industries due to their advantageous characteristics. Some notable applications include:

Metal Industries:

The metal industry relies heavily on various metals, such as steel, lead, titanium, and aluminum, to support and enhance numerous aspects of our daily lives, including transportation, healthcare, and housing. However, the process of mining and refining these metals requires cutting, welding, grinding, and melting, which necessitates the use of machines dependent on printed circuit boards (PCBs). In this industry, the operating temperatures can often be high, making the utilization of TG180 PCBs crucial.

The high-Tg PCBs ensure the smooth operation of micro-controllers within these machines, even in elevated temperature environments. This is particularly important in the metal industry, where precise control and reliable performance are essential for efficient and safe operations.

Engine Controllers:

In addition to the metal industry, TG180 PCBs also find significant applications in the aerospace and vehicle sectors, particularly in engine control systems. These industries require dependable controllers to enhance engine efficiency. The demanding operating conditions, characterized by high RPM and prolonged running hours, generate elevated temperatures that can potentially damage standard PCBs. By utilizing TG180 PCBs with appropriate temperature resistance, the risk of PCB failure is minimized, ensuring consistent and reliable operation of the engine control units.

Advantages of Using a Tg180 PCB

TG180 printed circuit boards (PCBs) offer enhanced stability due to their superior heat, moisture, and chemical resistance. These properties contribute to increased board durability and a longer shelf life, making them a reliable choice in various applications.

Furthermore, TG180 PCBs serve as an excellent alternative for multi-layer PCBs. Multi-layer PCBs are known for their dense and intricate designs, which can lead to increased heat generation. However, TG180 PCBs are specifically designed to effectively handle higher heat levels, making them suitable for applications that require a high level of intricacy and density.

Overall, the use of TG180 PCBs ensures higher stability, thanks to their improved resistance to heat, moisture, and chemicals. Additionally, their ability to handle intricate designs and dense circuitry makes them a preferred choice as an alternative to multi-layer PCBs.

Is the PCB TG Higher the Better?

The answer to whether a higher TG is better for a PCB is both yes and no, depending on the specific requirements and considerations.

On one hand, a higher TG indicates superior temperature resistance and stability for the PCB. This is particularly important when the PCB is exposed to high temperatures or when it absorbs moisture. Compared to a normal TG PCB, a high TG PCB offers better mechanical strength, stability, adhesion, water absorption, and thermal decomposition properties. With the trend of products becoming smaller, finer, and thinner, and with higher operating temperatures, a higher TG is generally preferred. Additionally, as lead-free assembly temperatures are typically higher than those of tin-lead soldering, a higher TG is advantageous in such scenarios.

On the other hand, producing high TG PCBs can be more challenging due to the higher lamination temperatures required. After undergoing high-temperature lamination, high TG PCBs tend to be harder and more brittle compared to normal TG PCBs. Mechanical drilling on high TG PCBs is also more difficult. Despite these challenges, many PCB designers and product managers opt for high TG PCBs in high-power devices due to their excellent thermal performance.

It is worth noting that high TG PCBs typically have more than 10 layers and employ high-end FR4 laminates with high TG and thermal decomposition temperature (Td). These characteristics contribute to their overall performance and durability.

In summary, the suitability of a higher TG for a PCB depends on specific requirements and trade-offs. While high TG PCBs offer advantages in terms of temperature resistance and stability, their production can be more complex. Careful consideration of the specific application and its demands is necessary when deciding whether a higher TG is preferable.

How Does Temperature Affect High TG180 PCB Performance?

The structural foundation of a printed circuit board (PCB) is provided by the RF4 substrate, which comes in different grades based on their temperature handling capabilities. It is crucial to understand the impact of temperature on the RF4 material to avoid potential failures.

Crosslinking is a critical aspect of the RF4 material, but it can be affected when exposed to temperatures higher than its designed range. Beyond the specific RF4 material’s TG (glass transition) point, the crosslink density decreases, affecting the mobility of material segments. This transition makes it easier for the material to shift from a solid glassy state to an amorphous and rubbery state.

The molecular weight of the RF4 material is closely related to the crosslink density. Exceeding the TG value of the FR4 material reduces the crosslink density and, consequently, the molecular weight, leading to a change in the material’s state.

The flexibility of the polymer in the FR4 material allows it to expand and contract with temperature fluctuations. However, when temperatures go beyond the TG value, these changes become irreversible. This affects the crosslinking density and molecular weight, significantly reducing the polymer’s flexibility, compromising its ability to function properly. For instance, the size of holes may change, negatively impacting the mechanical and electrical characteristics of the PCB design.

To ensure optimal performance, it is crucial to work with an FR4 material that has a TG value of at least 180 degrees Celsius, such as FR4 TG180, particularly when operating at temperatures below this threshold. Additionally, it is advisable to adhere to the manufacturer’s temperature recommendations and select materials with TB (temperature breakdown) ratings that are at least 20 to 25 degrees Celsius lower than the anticipated operational temperature. By following these guidelines, better stability and seamless operation of the printed circuit board can be achieved when deployed.

The Difference Between TG 170 PCB and TG 180 PCB Board

The main difference between Tg 170 PCB and Tg 180 PCB boards lies in their glass transition temperature (Tg) values. Tg is the temperature at which the FR4 material transitions from a rigid, glass-like state to a more flexible, rubbery state.

Tg 170 PCB boards have a glass transition temperature of 170 degrees Celsius. This means that the FR4 material used in these boards can withstand higher temperatures before undergoing a transition in its physical properties. Tg 170 PCB boards are suitable for applications that require operation in higher temperature environments.

On the other hand, Tg 180 PCB boards have a glass transition temperature of 180 degrees Celsius. This higher Tg value indicates that the FR4 material used in these boards has an even greater ability to withstand elevated temperatures without undergoing significant changes in its properties. Tg 180 PCB boards are typically chosen for applications that involve higher operating temperatures or that require increased thermal stability.

In summary, the main difference between Tg 170 PCB and Tg 180 PCB boards lies in their respective glass transition temperatures. Tg 180 PCB boards offer a higher temperature resistance and enhanced thermal stability compared to Tg 170 PCB boards. The choice between the two depends on the specific requirements of the application and the desired level of temperature performance.

How to Test Quality of High TG 180 PCBs?

Testing the quality of high TG 180 PCBs is crucial to ensure their reliability and performance in demanding applications. Here are some key methods and tests commonly employed to assess the quality of these PCBs:

1. Visual Inspection: Conduct a thorough visual inspection of the PCBs to identify any visible defects, such as soldering issues, misalignment, or physical damage. Inspect the solder joints, component placements, traces, and vias to ensure they meet the required standards.

2. Dimensional Verification: Measure critical dimensions of the PCB, including trace widths, spacing, hole sizes, and overall board dimensions, to ensure they comply with the design specifications and tolerances.

3. Electrical Testing: Perform electrical tests to verify the functionality and integrity of the PCB. This includes continuity testing to ensure proper electrical connections, testing for opens and shorts, and checking for impedance matching and signal integrity.

4. High Voltage Testing: High TG 180 PCBs are often used in applications that require high voltage tolerance. Conduct high voltage tests to ensure the PCB can withstand the specified voltage without insulation breakdown or arcing.

5. Thermal Cycling: Subject the PCBs to thermal cycling tests, where they undergo repeated temperature cycling between extreme hot and cold temperatures. This test helps evaluate the PCB’s resistance to thermal stress, ensuring it can withstand temperature variations without delamination, cracks, or solder joint failures.

6. Thermal Shock Testing: Similar to thermal cycling, thermal shock testing exposes the PCBs to rapid temperature changes. The PCBs are rapidly transferred between extreme hot and cold environments to assess their ability to withstand sudden temperature transitions without damage or failure.

7. Environmental Testing: Simulate real-world operating conditions by subjecting the PCBs to environmental tests such as temperature and humidity testing, salt spray testing, vibration testing, and mechanical shock testing. These tests evaluate the PCB’s performance and reliability under various environmental stresses.

8. Reliability Testing: Conduct accelerated life testing (ALT) to assess the long-term reliability of the high TG 180 PCBs. This involves subjecting the PCBs to prolonged stress conditions, such as elevated temperatures or high humidity, to accelerate aging and identify potential failure mechanisms.

9. X-ray Inspection: Utilize X-ray inspection to evaluate the quality of solder joints, especially for complex and fine-pitch components. X-ray inspection can detect hidden defects like voids, insufficient solder, or solder bridging.

10. PCB Functionality Testing: Once assembled, test the PCB’s functionality by subjecting it to the intended operational conditions. This includes testing the performance of integrated circuits, connectors, and other components to verify that the PCB meets the desired functionality and performance requirements.

It is important to follow industry standards and guidelines during the testing process and collaborate closely with the PCB manufacturer to ensure comprehensive and effective quality testing of high TG 180 PCBs.

Why Are High TG180 PCBs So Expensive to Manufacture?

Manufacturing high TG 180 PCBs tends to be more expensive compared to standard PCBs due to several factors:

1. Specialized Materials: High TG 180 PCBs require the use of specialized materials with a high glass transition temperature (Tg). These materials, such as high-Tg laminates or specialized substrates like polyimide or BT (bismaleimide triazine), are more expensive than standard FR-4 materials commonly used in regular PCBs.

2. Manufacturing Processes: High TG 180 PCBs often require additional manufacturing processes and specialized equipment to handle the higher temperatures involved. The fabrication process may involve more stringent control over temperature and lamination processes to ensure the integrity and reliability of the PCBs. These additional processes and equipment contribute to the increased manufacturing costs.

3. Quality Control: Due to the critical nature of high TG 180 PCBs in demanding applications, manufacturers need to invest in strict quality control measures to ensure the reliability and performance of the PCBs. This includes extensive testing, inspection, and verification processes, which add to the overall manufacturing cost.

4. Lower Yield: The manufacturing process for high TG 180 PCBs can be more challenging compared to standard PCBs. The higher temperatures involved can result in lower production yields due to increased material stress, potential delamination, or other manufacturing issues. This lower yield increases the cost per unit, as the cost of manufacturing is distributed among fewer functional PCBs.

5. Market Demand: The demand for high TG 180 PCBs is relatively niche compared to standard PCBs. The lower volume of production and specialized nature of high TG 180 PCBs can lead to higher prices due to economies of scale. Manufacturers need to cover their costs and ensure profitability in a smaller market segment.

6. Research and Development: Developing and refining high TG 180 PCB manufacturing processes requires extensive research and development efforts. These costs are often factored into the pricing of the final product.

It’s worth noting that as technology advances and the demand for high TG 180 PCBs increases, economies of scale may improve, leading to potential cost reductions in the future. Additionally, competition among manufacturers may also drive prices down over time.

Why Choose Your TG180 High TG PCB From JarnisTech

We understand that every project is unique, and we are pleased to offer our Tg 180 High Tg PCBs to meet your specific requirements. At JarnisTech PCB, we pride ourselves on delivering high-quality products and have obtained ISO9001 certification, ensuring our commitment to excellence.

With our quick turnaround service, we prioritize efficiency without compromising on quality, allowing you to meet your project deadlines with confidence. Our team of experienced engineers and sales professionals are here to provide expert guidance and support throughout your project, from initial design to final production.

In conclusion, Tg 180 High Tg PCBs are a remarkable technological advancement that has revolutionized the electronics industry. Their exceptional thermal and mechanical properties make them indispensable in a wide range of applications. By choosing JarnisTech PCB for your Tg 180 High Tg PCB needs, you are investing in reliability, durability, and superior performance.

If you are in need of Tg 180 PCBs or any other High Tg circuit boards, we encourage you to reach out to JarnisTech PCB via email. Our dedicated team will promptly provide you with a quote within 24 hours.


High TG 180 PCBs have revolutionized the electronics industry, empowering the creation of more durable and dependable electronic devices. Their ability to withstand high temperatures while maintaining optimal functionality positions them as a preferred choice for applications that experience thermal stress. Each design decision, from material selection to thermal management and component layout, significantly impacts the performance and reliability of high TG 180 PCBs. Moreover, through rigorous testing and validation processes, engineers can guarantee that their high TG 180 PCB designs operate seamlessly and exhibit exceptional stability and durability in real-world applications.

As technology continues to advance, the demand for high TG 180 PCBs is poised to grow exponentially. For devices requiring reliable operation in high-temperature environments, high TG 180 PCBs offer an indispensable solution. By focusing on material selection, thermal management, and design optimization, engineers can ensure that high TG 180 PCBs meet the highest standards of performance and reliability, propelling innovation in the electronics industry.

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