Your Reliable High TG PCB Manufacturer in China Since 2008

PCBMay is a professional high TG PCB manufacturer in China, we could offer different TG values from TG135 to TG180 for your projects.

  • Over 12 years high TG PCB manufacturing experience
  • All high TG PCBs meet IPC Class 2 and Class 3
  • 24h quick-turn service for your prototype high TG PCB
  • Provide CoC report, soldering sample, micro-section for each order
  • 7/24 sales and engineering tech support
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PCBMay: Your Leading High TG PCB Supplier in China

PCBMay is one of the skillful manufacturers of high TG PCB. We have the full capabilities to manufacture different kinds of high TG PCBs to fulfill your demand. We have sufficient high TG raw materials in stock including KB, Shengyi, NanYa, FR408, 370HR, and ITEQ.

If you have some high-tech PCBs such as HDI PCB, multilayer PCB, and rigid-flex PCB, we suggest using high TG of copper clad laminate to proceed with the PCBs.

As an ISO and UL certificated manufacturer, PCBMay will strictly follow up the requirement of customers and provide high-quality high TG PCB for you. Just send us an inquiry right now, we will reply to you immediately.

Many Different Types of High TG PCB Rocket Your Projects


FR-4 refers to a grade of epoxy fiberglass material where the FR stands for “flame retarding”. The TG130 refers to the glass transition temperature and indicates that this material will begin to deform at 130 ℃. FR-4 is the most common substrate material for rigid PCBs, particularly prototypes. In the PCB, the pre-preg and core will be made of this material.


The general median Tg is greater than 150-160 centigrade, As a general rule the higher the Tg, the more stable the material is during the PCB manufacturing process and assembly. If you are not sure about what material you should specify, ask your PCB manufacturer. They know their process and they know what they are capable of.

High TG170 PCB

FR-4 materials with higher glass transition temperatures are available in the Advanced PCB service. High TG FR-4 (TG170) boards can withstand deformation at higher temperatures of up to 170 ℃ and are suitable for extreme temperature applications. If you want to make multi-layers (more than 10 layers) with blind & buried via.

High TG1175 PCB

The typical FR4 TG175 material is Nelco N4000-6, which is a high-Tg epoxy laminate and prepreg system that provides a wide range of performance versatility and ease of processing for demanding high-layer count applications. It has excellent electrical properties for a standard loss material, supporting advanced technology PWB designs, and is suitable for high-layer count, sophisticated PWB designs.

High TG180 PCB

PCBMay can manufacture High-Tg PCBs with a Tg value of up to 180°C, normally it’s typical ITEQ 180 and 370HR. Where quality is the highest priority, we would recommend utilizing ITEQ IT180A (TG 180) which is also RoHS compliant. ITEQ IT180A (TG 180) is comparable in quality and to Isola 370HR (TG 180), which are made using a patented high performance 180°C Tg FR-4 multi-functional epoxy resin system


PTFE materials are valued for their suitability in high-frequency applications. At RF and Microwave frequencies, the dielectric constant of standard FR-4 Material (approx. 4.5) is often too high, resulting in significant signal loss during transmission across the PCB. Fortunately, PTFE materials boast dielectric constant values as low as 3.5 or below, making them ideal for overcoming the high-speed limitations of FR-4.

PCBMay is a Trusted High TG PCB Manufacturer for You

Are you looking for a reliable high TG PCB supplier?You just send Gerber data and design drawing, they will help you to solve all issues, for example, reply to email immediately, send quotation in time, deliver the goods in time, do not find any excuse when there is quality issue. PCBMay is this kind of supplier. You choose us that it’s a good choice.

In order to save cost and shorten the delivery time of our customer, we has brought many high-tech production lines from home and abroad.

Please send inquiry to us now, we will give you something different.

VPC Plating Line

Related High TG PCB Boards

Multilayer PCB
Multilayer PCB
PCBMay can produce the multilayer PCB reach to 40 layer, when you have inquiries, just send them to us.
HDI PCB is our expertise, PCBMay can offer any layer HDI PCB with buried/blind vias.
rigid flex pcb
Rigid-Flex PCB
Rigid-flex PCB is more complicated than standard FR4 circuit board and the delivery time is also longer.
prototype pcb
Prototoype PCB
In PCBMay, we can offer the quick-turn service for your prototype PCB such as 24H, 48H and 72H.

High TG PCB Production Details As Following Up

Brown Oxide
PTH Line
VCP Plating   AOI  Exposure E-Test
Quality GradeStandard IPC 2
Number of Layers2 – 40layers
Order Quantity1pc – 10000+pcs
Build Time2days – 5weeks
MaterialS1141 (FR4), S1000-2M (FR4), IT180, Rogers 4350B
Board SizeMin 6mm x 6mm | Max 500mm x 900mm
Board Thickness0.4mm – 6.5mm
Copper Weight (Finished)0.5oz – 2.0oz
Min Tracing/Spacing3mil/3mil
Solder Mask SidesAs per the file
Solder Mask ColorGreen, White, Blue, Black, Red, Yellow
Silkscreen SidesAs per the file
Silkscreen ColorWhite, Black, Yellow
Surface FinishHASL – Hot Air Solder Leveling
Lead-Free HASL – RoHS
ENIG – Electroless Nickle/Immersion Gold – RoHS
Immersion Silver – RoHS
Immersion Tin – RoHS
OSP – Organic Solderability Preservatives – RoHS
Min Annular Ring4mil
Min Drilling Hole Diameter6mil
Other TechniquesGold fingers
Blind/Buried Vias
Countersink Holes

1, What Is PCB Temperature?

Medium Tg PCBs generally have a maximum temperature of above 150°C while high Tg PCBs are rated above 170°C. PCBs with higher Tg value also demonstrate better moisture and chemical resistance, as well as sturdier physical structure in heat.

2, What Is TG In PCB?

TG, or Glass transition temperature, is the base material parameter that stands for the temperature (°C) on which the base material becomes mechanically unstable. Tg is the value that needs to guarantee the mechanical stability of the PCB during the operational lifetime of the PCB.

3, What Does TG Mean In Chemistry?

TG means Glass Transition Temperature. The TG of a resin system defines when a thermoset polymer goes from an amorphous rigid state to a more flexible state. TG is an abbreviation for Glass Transition Temperature.

4, What Is High Tg PCB Material?

For PCBs, the Tg corresponds to the temperature at which fiberglass becomes amorphous during lamination at high temperatures and under the pressure of the different material layers. The standard FR4 Tg is between 130 – 140°C, the median Tg is 150 °C and the high Tg is greater than 170°C.

5, What Is Tg Value?

The Glass Transition Temperature (Tg) is one of the most important properties of any epoxy and is the temperature region where the polymer transitions from hard, glassy material to a soft, rubbery material.

6, What Is Standard TG Value?

The standard TG value is TG130-140.

Why Choose PCBMay for Your High TG PCB Projects

When you are designing or will design a multilayer(over 10layers) or HDI PCB, please consider using high TG laminate, because it will decrease the delamination issue for the multilayer.

We have passed ISO9001, ISO14001, RoHS, REACH, and UL certifications, moreover, we have one strictly incoming material inspection team to support you and make sure each process is followed up your standard.

When you place an order with us, we have one support team to assistant to you, meanwhile, we provide WIP(work in process) to you each week. You will know the status of your order and arrange for your production schedule in time.

Please don’t hesitate to contact us when you have any questions.

High TG PCB: The Ultimate FAQ Guide

The Glass Transition Temperature (Tg) is one of the most important properties of any epoxy and is the temperature region where the polymer transitions from hard, glassy material to a soft, rubbery material.

What is High TG PCB

Circuit board material must be flame-resistant, it can’t be burned at a certain temperature and only be softened. The temperature point is called the glass transition temperature (Tg).

The higher Tg point means a higher temperature requirement during lamination.

And the boards will be hard and crisp, which will affect the hole and the electrical properties.

In recent years, there are more and more customers request to manufacture PCB with high Tg, in the following we would like to describe what is high Tg PCB.

Tg is the glass transition temperature of a Printed Circuit Board. It is that temperature at which the base material of a PCB starts to transform from a brittle condition to a soft, elastic one.

A PCB whose glass transition temperature (Tg) is greater than 170 ℃ is known as a High Tg PCB. Generally speaking, Tg values for PCBs is between 130 and 170 ℃.

High TG PCB is the transition temperature of the PCB at which the brittle and hard material of a PCB starts to melt into a softer and delicate material.

It is an important property in PCBs.

The demand for High TG PCB in the PCB industry has suddenly increased.

The PCB has a temperature higher than 170 is termed as High TG PCB.

All the PCBs have manufacturing of a different material.

Some are harder than the other is. Therefore, the values of transition temperature for every kind are different.

Usually, the high transition temperature lies between 120 to 170 degrees.

The High TG PCB

The High TG PCB

If your product is working at 130 degrees or higher, you will need a High TG PCB.

For a High TG PCB, there is a need for higher temperature. During lamination, while processing a printed circuit board.

When making a printed circuit board at the TG temperature, it is hard and crisp. In addition, it has better electrical properties.

The printed circuit boards of low quality deform and melt at higher temperatures. They lose their electrical and mechanical properties.

The higher the transition temperature of a High TG PCB, the better the quality like heat resistance, chemical resistant, mechanical stability, and much more.

Here is some popular High Tg board raw material in the market:

Every PCB has a different Tg value based on its substrate. If the operating temperature of the board exceeds its Tg value, the board will begin to change its state which will have an adverse effect on the functionality of the PCB.

High Tg PCB boards perform better at high temperatures with better stability as the substrate provides better heat resistance, chemical, and mechanical stability to the board.

When selecting a PCB, the Tg value should be at least 20-25 degrees Celsius higher than the expected operating temperature of the device in which the PCB is used. For instance, if you have a PCB with a Tg value of 130 degrees Celsius then the working temperature of the device should be lower than 110 degrees Celsius.

What Advantages of High TG PCB

Withstand High Power Density Designs: If a device has high power density with a very high heat generation rate then High Tg PCB is a good solution for heat management.

Reduction in the heat generation of a regular PCB can be accomplished by using a larger PCB, changing the design and power requirements of a device.

Alternatively, a high Tg PCB board can be used.

Ideal for Multilayer & HDI PCBs: Multilayer & HDI PCBs are more compact and have very dense circuits which can result in high levels of heat dissipation.

High Tg boards are often used in these kinds of PCBs to ensure reliability during operation.

Higher Stability: If the Tg of a PCB substrate is increased then it will automatically increase the heat resistance, moisture resistance, chemical resistance, and stability of the device.

We can manufacture High-Tg PCBs with a Tg value of up to 180°C.

The following table lists some of our commonly used materials for High-Tg PCB production.

(DSC, °C)
(Wt, °C)
CTE-z (ppm/°C)Td260 (min)Td288 (min)
S1141 (FR4)175300558/
S1000-2M (FR4)180345456020
Rogers 4350B28039050//

There are many advantages of using a High TG PCB instead of a simple printed circuit board.

These are as follows:

  • Higher stability:

If the TG value of the printed circuit board increases, it will increase the stability of the device. The higher the TG value, the higher the stability.

  • It is Good for high power density designs:

If your device is having a high power density, it will automatically produce high heat. It would be great to use High TG PCB for it as a solution.

You can go for a printed circuit board of larger size to change the power requirements of the printed circuit board when producing high heat.

  • In multilayer PCBs:

The multilayered PCBs are complex ones having multilayers. The heat generation in them is greater as well. Therefore, it is best to use High TG PCB in such cases.

  • These printed circuit boards are much stable than any other PCB.
  • They are mechanically strengthened and chemically resistant.

What are The Properties of a High TG PCB?

There are many fascinating properties of High TG PCB, which you must consider.

Due to the unique properties of High TG PCB, they have wide use in the PCB industry.

There is a high demand for High TG PCB in recent years due to better qualities and functions.

They have been used in high-technology devices like computers, communication devices.

Due to these outstanding properties, they are of higher cost as compared to other printed circuit boards.

Other printed circuit boards are simple as compared to complex High TG PCB.

They have a far bar than a simple printed circuit board.

The properties of High TG PCB includes:

High resistance to heat, and can withstand any damage, deformity, melting caused by it. They undergo lesser changes under high temperatures. They have low thermal expansion.

The High TG PCB provides higher chemical and mechanical resistance than any other type of printed circuit board.

They have longer delamination durability.

High TG PCB is very much stable printed circuit boards.

They are resistant to high humidity.

When you are manufacturing High TG PCB, make them mechanically strong.

They can withstand all kinds of pressure.

The Properties of High TG PCB

The Properties of High TG PCB

What are the Applications of a high TG PCB?

The applications of High TG PCB have increased immensely in the printed circuit board industry due to its great properties.

They are the most modern and high technology devices that are in the market now.

In devices where the heat production is very high that interfere with the working of the circuits, the High TG PCB is the reliable option you have.

They are used in harsh environments.

Following are the applications of the High TG PCB:

High TG PCB has its uses in the telecommunication and aerospace industry.

It has its uses on high vibration devices.

High TG PCB has applications in the defense and military industry.

They have great use in the automobile industry. Automobile appliances have great production of heat while they are working. Therefore, it is very important to use High TG PCB in them.

They have great use in radar systems and navigation systems.

It also has uses in solar power equipment.

They have used medical technology equipment and modern solutions.

They are also used in metal industries, where machines are used to give shape to different metals. These machines have high temperatures and need High TG PCB in them.

They also have uses in engine controllers where the temperature is very high.

The application of the High TG PCB

The application of the High TG PCB

What are the Specifications or Features of High TG PCB?

The features of High TG PCB are of great importance because the working of a device would depend on the working of High TG PCB.

If you are looking for a reliable High TG PCB to purchase, you should look for these certain important features of High TG PCB.

You can divide the physical features of High TG PCB into thermal, mechanical, chemical, and electrical.

Thermal features:

The High TG PCBs have excellent thermal stress resistance. They can endure high temperatures.

They have high thermal shock resistance.

The thermal features include:

Glass transition temperature

Thermal conductivity

Glass transition temperature:

The temperature at which the High TG PCB changes its state, known as glass transition temperature. It starts melting, becomes softer, and loses its original shape.

High TG PCB is brittle and hard originally.

Thermal conductivity:

It refers to the ability of a material to conduct or transfer heat.

Mechanical features:

It is another very important feature of High TG PCB.

It includes different parameters like peel and flexural strength.

Peel strength: It measures the bond strength that is present between the dielectric material and that of a copper.

Flexural strength: The High TG PCB material can withstand any mechanical pressure without being damaged.

Chemical features:

Chemical features have their importance.

The first feature that High TG PCB has is that they are humidity resistant.

They can withstand a lot of moisture in their environment without getting damaged.

The moisture directly affects the working of any device. However, High TG PCB resists high moisture.

Electrical features:

Electrical strength and surface resistivity are the two major features that come under electrical features:

Electrical strength:

High TG PCB can resist any electrical damage.

You can easily determine the electrical strength of High TG PCB by applying a voltage to it.

The depiction of High TG PCB thermal stability properties

The depiction of High TG PCB thermal stability properties

What is the Design or Layout of High TG PCB?

The layout of the High TG PCB is a very crucial step toward designing a printed circuit board.

The first step of fabrication of High TG PCB is to that you have a design that you can use while making it.

For a High TG PCB design, you can use different kinds of software. The software includes OrCAD, Pads, and Eagle.

All this software can help minimize the error in High TG PCB designing.

You have to determine that what frequency signal you are going to use for High TG PCB.

After you have designed a High TG PCB. You have to collect the component that you are going to use on a High TG PCB.

You need to make sure you select suitable voltage and power requirements for the components used in High TG PCB making.

You have to select the best material for High TG PCB making. It could be FR4 or Rogers’s material.

You need to make proper data, which determines the design of High TG PCB.

Make documentation for all the important steps you are taking.

Documentation is required for the staking-up plan in the designing of High TG PCB.

All these steps are very crucial and of great importance.

Routing is done, once the design of High TG PCB is complete.

You have to make different vias.

You have to determine the ground plane and power plane.

After this, route the high-frequency signals.

Check the return path for these signals.

The designing of the High TG PCB

The designing of the High TG PCB

What are the Chemical Features of High TG PCB?

The chemical features of High TG PCB plays an important role in the functioning of a High TG PCB.

You must determine the chemical features before you select the material for High TG PCB.

The High TG PCB is humidity resistant can withstand high moisture.

Even a lot of moisture cannot cause damage to the High TG PCB.

The moisture absorption directly affects the working of High TG PCB.

The other chemical feature is methylene chloride resistance of High TG PCB.

It measures the resistance of High TG PCB towards methylene chloride.

The chemical features of High TG PCB directly affect the electrical and mechanical properties of High TG PCB.

When Do You need a reliable High TG PCB?

When you are subject to higher temperatures, they withstand these high temperatures.

You will need a High TG PCB when your product is operating at a temperature greater than 130 degrees.

It would be safe to use High TG PCB at this temperature compared to a simple printed circuit board.

You will need a high transition temperature printed circuit board for your device when your circuit board is experiencing temperature 25 degrees below than normal transition temperature value.

However, the main reason you need a High TG PCB, is the movement towards RoHS printed circuit board.

So whenever the device has a temperature that is exceeding 130 degrees Celsius, make sure to use High TG PCB in it.

Use high TG PCB rather than a normal printed circuit board.

What is High TG PCB Stability?

The High TG PCB stability means that it can withstand any fluctuation.

High TG PCBs operate at temperatures greater than 130 degrees Celsius and they can range up to 170 degrees Celsius.

They are extremely stable and have great mechanical strength.

They are thermally stable. They are thermal stress-resistant and can bear very high temperatures.

They have the stability of their dimensions. It can resist any pressure applied to it as well due to mechanical strength.

They have electrical stability and strengthening as well. They can withstand any voltage changes that occur in any application.

They are chemically stable and have great stability against moisture in its surrounding.

They also have stability against methylene chloride. Excess methylene chloride can cause damage to the High TG PCB. However, they resist it.

The graph indicates the stability of High TG PCB

The depiction of High TG PCB thermal stability

What is a TG Value?

TG value stands for the transition temperature at which the material starts to lose its original state.

In the case of High TG PCB, It is the temperature at which the High TG PCB starts to lose its brittles, hardness and starts to melt, and becomes softer and elastic.

As a result, the High TG PCB loses its functioning and working.

High TG PCB becomes mechanically unstable.

For a transition temperature value of any material, there is an upper value. At this temperature, the resin decomposes, and the delamination process occurs.

If the working temperature of your device is higher than 130 degrees Celsius, then there is a need of using a High TG PCB.

Also during the lamination process, the higher is the transition temperature, the higher is the temperature requirement.

Therefore, during lamination, higher temperatures will cause the circuit boards to be crisp and hard.

Moreover, with the immense increase in technology, the requirement for High TG PCB in the printed circuit board industry has increased exponentially.

The High TG PCB transition temperature (TG)

The High TG PCB transition temperature (TG)

What is the Effect of Moisture on High TG PCB?

Some features directly affect the working and functioning of the High TG PCB.

The High TG PCB is chemically stable.

It means that it can withstand any chemical being present in its environment.

It can absorb any moisture present in its environment.

The presence of moisture can affect the working of High TG PCB.

Therefore, moisture present in the surrounding of High TG PCB could be damaging for its working and functioning.

However, the High TG PCB has great moisture absorption capability.

You need to make sure, that no excess moisture is present when you are using the High TG PCB.

No humidity present in the environment is the ideal state for the working of High TG PCB.

In addition, in case you want to remove the moisture present in your High TG PCB, you can use the baking method to remove moisture.

During this process, the moisture is a force out of the printed circuit boards. Therefore, it can prevent it from further damage.

The effect of moisture on High TG PCB

The effect of moisture on High TG PCB

What is High TG PCB Material?

The High TG PCB material is one that can withstand very high temperatures. It can range from 130 degrees Celsius to 170-degree Celsius.

Usually, the manufacturers chose high Tg material to make higher layers of PCB.

When it comes to the selection of material for the making of High TG PCB. You must choose materials that have a high transition temperature value.

This high transition temperature will make it very stable.

Therefore, a very high temperature i-e greater than 170 degrees Celsius would be required to deform or melt it.

Generally, the transition temperature (TG) material used in High TG PCB is FR4.

The transition temperature for FR4 usually lies within 130 degrees Celsius to 140 degrees Celsius.

The higher the transition temperature value of any material, the better is the working and the performance of any circuit board.

The high Tg material is used in almost all high technology devices.

It has its uses in computers, LED lights, radar systems, the aerospace industry, and for military purposes.

If the Tg value is higher, a greater amount of energy and temperature would be required to degrade it.

The FR4 material used for High TG PCB

The FR4 material used for High TG PCB

What is the High TG PCB Manufacturing Process?

The manufacturing process of High TG PCB is very crucial and requires great precision.

The first step in the manufacturing of High TG PCB is the designing of the High TG PCB.

In this step, make the design of High TG PCB and then finalize it.

Make the design of the High TG PCB and make sure it is ready to use.

You can use any software for designing the High TG PCB.

Once you finalize the design of the High TG PCB, check for the frequency of the signals that are required to use in the manufacturing of High TG PCB.

Once it is determined, gather all the components.

Start routing connections on the board. Determine every component that is going to be used.

Start the assembly of the components.

Determine all the grounds like the ground plane and power plane.

Check for all the high-frequency signals and signal return paths.

In this way, perform the manufacturing of the High TG PCB.

The manufacturing process of High TG PCB

The manufacturing process of High TG PCB

What Is the Maximum Temperature Of High TG PCB?

The High TG PCB has the ability to withstand very high temperatures.

The range of temperature that a High TG PCB can withstand, lies within 130-degree Celsius to 170 degrees Celsius.

After this temperature, the High TG PCB starts to deform and melt.

It loses its hardness and brittleness after this temperature.

The temperature requirement at which it loses its state is known as the Tg temperature i-e, the transition temperature of the High TG PCB.

The greater the transition temperature of the printed circuit board, the greater is its working.

It means that the High TG PCB is one of the best circuit boards. Comparing to the ordinary circuit board.

Ordinary circuit boards have lower transition temperature values, which means lesser heat stability.

High TG PCB demand has increased immensely over the past few years in the printed circuit board industries.

Due to its high thermal stability properties, it has its uses in almost all kinds of devices, making it one of the printed circuit boards that have ever existed.

Aerospace, telecommunication, defense and military, and automobile industries have great use of High TG PCB.

The Maximum Temperature Of the High TG PCB

The Maximum Temperature of the High TG PCB

What is the Result of the Temperature when it exceeds the Tg Value for the PCB?

The printed circuit boards have a temperature limit at which they can work and function properly.

However, if they exceed the temperature limit, the printed circuit board loses its state and starts to deform.

In addition, when the circuit board melts, it loses all its mechanical and electrical properties.

The usual hard form of the printed circuit board is gone,  due to excessive temperature administered on it.

It is known as the temperature limit of the printed circuit board.

Usually, the temperature range for it is below 130 degrees Celsius.

However, in the case of High TG PCB, when the temperature is applied above 130 and below 150 degrees, the High TG PCB keeps its integrity and state.

Nevertheless, when the temperature exceeds 170 degrees Celsius, It starts to lose its brittleness and hardness. It is known as the transition temperature for High TG PCB.

Due to the higher transition temperature of the High TG PCB, it has well know physical features that make it an outstanding printed circuit board.

Due to this, it has high thermal stress stability.

In addition, it has high mechanical strength.

From Where Can You Purchase High TG PCB?

You can purchase a High TG PCB from PCBMay. It is an authentic company founded in 2008.

It is a leading manufacturer of high technology the High TG PCB.

They are delivering worldwide to more than 60 countries of the world.

They are ISO 9001 quality system certified.

Apart from that, they have ISO 14001 environmental system certification

In addition, they provide you with the best and reliable product.

They have extremely good and well-known customer service

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