Change Language
High TG PCB
Your Dependable High TG PCB Manufacturer in China
- High Tg PCB can handle challenging high-power, multilayer, and high-density circuit board designs.
- High-tg PCBs have a high heat resistance with a tg of over 170 °C
- High-tg PCBs are widely used in aerospace, medical, defense, and military industries
- We strictly follow the IPC Class 2/3 standard to manufacture high-quality high-tg PCBs.
Do you have specific thermal performance requirements for your electronics project? Regular PCBs can’t withstand high temperatures in some projects requiring superior thermal management performance. High temperatures can also cause severe damage to conductors and dielectrics, which is when high-tg PCBs are needed. At PCBTok, a High-tg PCB manufacturer with 20+ years of experience, we can skillfully handle your project. Follow us below to learn more about High-tg PCB properties, materials, and more to help you make a better decision.
What is High TG PCB?
An important property of your circuit board material is the glass transition temperature (Tg). It is the temperature at which the hard, glassy material changes to a softer, rubbery one. Simply put, PCB Tg is a board’s highest temperature without losing its rigidity. Temperatures higher than this will result in the softening and deformation of the material, and the consequent rapid drop in mechanical and electrical performance.
Standard high-temperature FR-4 materials have a Tg of about 130°C. We categorize anything over 150°C as medium Tg. Real high-temperature PCBs are developed using materials with a Tg of 170°C or higher. These custom boards are developed with high temperatures in mind, where standard boards may fail.
Selecting a high Tg PCB material will make your board highly heat resistant, resistant to moisture & chemically stable. The higher the Tg, the better the board performs under thermal stress, therefore the more reliable the product. This is especially important for lead-free soldering procedures, as standard FR-4 boards can become damaged due to the higher temperatures needed.
Why Choose High Tg PCB Materials?
The reliability of your board directly depends on the operating temperature. Your design will be exposed to a lot of heat and therefore must use a material that can work out. A high temperature PCB delivers the stability your design requires to work as it should. This is why it is a good selection to use in demanding applications.
- A high Tg PCB is reliable compared to a standard FR-4 board. It has better thermal, chemical, and mechanical properties. This strength reduces the likelihood of board failure and short circuits in the high-temperature environment, leading to a more durable product.
- The dense components can produce a lot of heat when designing a complex HDI or multi-layer board. A standard board can have issues with this thermal load. The best is to work with a high Tg PCB material to control this heat and keep your design performing right.
When is it Necessary to Use a Board With a High Tg?
A high-Tg PCB is advisable for the device to work at high temperatures. For example, if your circuit will be operating at 150°C, you must have a board that can withstand the heat. In this instance, select a material with a Tg value of 180°C or above. This is common to military and space requirements.
Characteristics Of High Tg PCBs
Choosing a high Tg PCB material can offer more than heat resistance. Computers, communication equipment, and HDI boards produce more heat due to more complex designs. High Tg FR-4 can be more expensive than typical boards, but it is key to reliability in modern electronics.
- High Heat Resistance: Your board can resist the higher heat levels at which you operate it, guaranteeing steady performance when placed under load.
- Low Thermal Expansion: Decreased expansion and contraction of the material with temperature change. This eliminates stress on solder and solder joints and components, thereby eliminating connection failure.
- Excellent Mechanical Strength: Your board is less prone to warping or flexing when exposed to thermal stress and has improved dimensional stability, protecting your component.
- Reliable Plated Through-Holes (PTH): You can trust the quality of your vias and connections, which is crucial to the reliability of multi-layer boards.
- Long Delamination Durability: The layers that form your PCB are firmly bonded together, even after long exposure to heat. This avoids failures associated with the aging of materials.
- Improved Moisture Resistance: These materials do not absorb much moisture, which helps retain electrical and mechanical properties, particularly in harsh environments or in moisture areas.
Materials and Composition of High TG PCB
Your board will need the right high Tg PCB material to perform its best. The materials should not deteriorate under high temperatures, making your finished product reliable and stable. These are some of the most popular choices that you can select for your design.
High Tg Epoxy Resin
This is the most typical FR-4 high Tg board material. It is very thermally stable and has good mechanical strength. It is simply an enhanced form of standard epoxy, ensuring it is a dependable and affordable solution for most applications. It will give you a good starting point for your high-temperature design.
Polyimide
When your application requires even greater temperature resilience, you should consider polyimide. This material is well known for its superior thermal performance. It can withstand severe heating without losing properties, making it a common selection in aerospace and military electronics. You can trust it in the most challenging settings.
Ceramic-Filled Polymers
In high-power applications, efficient heat management is required. Ceramic-filled polymers can provide this. These materials enhance your boards’ heat conductivity and stability. They also assist in removing heat from critical components quickly, which is why they are suitable for power supplies and motor controllers.
Metal Core Substrates
To maximize heat dissipation, you may use a metal core substrate. Such boards are manufactured with a base layer of aluminum or copper. This metal core serves as an extremely effective heat sink, enhancing the thermal management of your design. That is why you find them in high-power LED lighting.
High TG Material Used by PCBTok
In order to make your board perform when under pressure, it must be the right material. In PCBTok, we carry large amount of high performance materials in most top manufacturers. This will enable you to choose the ideal PCB material with high glass transition temperature to suit your special need. The list below gives the popular high Tg materials that we deal with.
| Manufacturer | Material Name | Tg Value (°C) |
| Isola | FR370HR | 180 |
| Isola | I-Speed | 180 |
| Isola | I-Tera MT40 | 200 |
| Isola | Tachyon-100G | 192 |
| Isola | P95 | 260 |
| ITEQ | IT-180A | 190 |
| Nelco | N4800-20 | 180 |
| Nelco | N4000-13SI | 210 |
| Rogers | RO4380-13RF | 200 |
| Rogers | RO4003C | 280 |
| Rogers | RO4350B | 280 |
| Shengyi | S1170G | 180 |
| Shengyi | S1000-2 | 185 |
| TUC | TU-768 | 190 |
Advantages of High TG PCBs
A PCB with a high Tg provides more than heat resilience. It offers a number of major benefits that directly enhance reliability, performance, and the life of your whole device. The following are the reasons why you should consider using high Tg PCB material on your next project.
Higher Stability
You have a more stable and solid product. These boards are highly resistant to heat, chemicals, and moisture and hence are less susceptible to severe operating conditions. This extends the life of your board dramatically by avoiding frequent failures such as short-circuits and delamination.
Bear High Power Density Designs
A high power density design will produce considerable heat. The ideal solution to deal with this thermal stress is a high-temperature PCB. You do not have to increase the size of your board to disperse the heat; you can rely on a material with a high Tg to keep its compact dimensions and powerful operation.
Ideal for Multilayer & HDI PCBs
Dense, compact circuits in multilayer and HDI boards have the potential to trap heat and prevent air circulation. This renders a high Tg PCB the optimal option for such advanced designs. With high Tg material, you can get long-term reliability and functionality of your complex and compact circuit boards.
Applications Of High Tg Boards
A high Tg PCB is important to most industries due to its dependability. This is the board to use when your device expects a high heat, vibration, or stress environment. Some of the main applications that use a high Tg PCB material as a standard include:
Automotive and Aerospace: This is used on engine controllers, braking, and avionics under extreme temperatures and continual vibration. Having a high-temperature PCB means that your device will perform reliably when subjected to constant stress.
Industrial Control and Automation: Your factory automation and robotics must survive in severe environments. High Tg PCBs offer the durability your equipment needs to run 24/7 without faults.
Communication Equipment: Network routers, servers, and base stations that run hot require excellent thermal stability. A high Tg PCB will guarantee that your signals remain clean and your equipment performs reliably.
Medical Devices: Your medical electronics should be safe and be able to resist high-temperature sterilization. A high-temperature Tg PCB handles these processes without degrading, critical in surgical tools and monitoring equipment.
Military and Defense: Military and defense applications, such as radar and tactical accessories, are mission-critical and should not fail. High Tg PCB provides the extreme reliability and temperature tolerance that defense systems need.
Why Choose PCBTok as Your High TG PCB Partner?
You need a high Tg PCB manufacturer you can rely on when your design is challenged by extreme heat. At PCBTok, you get the same reliability and performance your project requires. We are experienced in delivering solutions that ensure your board survives harsh thermal environments without any adverse impact on its operation.
As a professional high-tg PCB manufacturer, PCBTok is committed to providing our global customers with high-quality PCB production and assembly services. Therefore, we have stock of some commonly used materials such as Rogers and Isola. At the same time, we have achieved good cooperation with our material suppliers, which facilitates rapid production.
We support rapid prototyping for your project’s testing stage, speeding up your project cycle. We also produce high-Tg PCBs in strict compliance with IPC Class2/3 standards, and the PCBs are tested by AOI, E-testing, etc., to ensure that each PCB board meets the industry standards.
Upload your Gerber file for a free DFM Check and fast quote for your High TG PCB project.
Related Products
Get an Instant Online Quote Today
PCBTok is a high-Tg PCB manufacturing specialist, whether you need a high-density power system or a complex HDI board. We will advise on the suitable material and give professional input, so that your design works perfectly in challenging thermal conditions. Our state-of-the-art manufacturing plant can produce complicated assemblies demanding complex tolerances and surface treatment. Whether you are looking at a single prototype or an entire production lot of high Tg PCB, you will always receive the same quality and service you rely on. Send your design files today to receive an immediate online price quote, and we will get your project going.
Frequently Asked Questions
TG is the abbreviation for glass transition temperature. It is the temperature at which the board’s material starts to soften and no longer possesses rigid qualities.
Heat resistance is the primary difference. The high Tg PCB is stabilized under high temperatures, so it is suitable for hot-running devices. A low Tg (or standard) board is optimal as it applies to less thermally stressed applications.
They measure different thermal limits:
- Tg (Glass Transition Temperature): A temperature at which the board’s material softens.
- Td (Decomposition Temperature): The much higher temperature at which the material starts permanently breaking down.
They are incompatible with each other since they have different reactions to heat. When subjected to lamination, this variation in its thermal coefficient of expansion will create severe manufacturing flaws, resulting in an unreliable or failing board.
High Tg PCB is made to withstand but not necessarily dissipate heat. It is operated as a thermal management system involving techniques such as:
- Heatsinks
- Thermal vias
- Proper airflow from fans
Some of the quality measures that we employ are:
- Electrical Testing
- Automatic Optical Inspection (AOI)
- Thermal Stress Testing
- Solderability Testing
- Peel Test
Operating conditions and quality of materials determine lifespan. A typical shelf life of a bare board is 1-3 years. It could have a service life of over 10 years when assembled into a device.