Your Premier TG PCB Manufacturer in China

Your Professional TG PCB Supplier

Are you looking for a reliable TG PCB manufacturer and factory in China? Then, you drop in the right place to be. With the increasing demand for electronic technology, we present innovative and quality TG PCB products.

If you are unsure how a TG PCB works to protect your sensitive circuits or what your particular operation requires, PCBMay is your perfect choice.

It has better stability at high temperatures. Because the substrate provides improve heat resistance, mechanical resistance, and chemical stability on the board.

The high TG PCB is widely used in metal industries and engine controllers. It includes a gateway, Rfid, inverter, antenna, WiFi booster, Ac power supplies, embedded computer systems, embedded system development, low-cost PLC, etc.

PCBMay TG PCB provides high functionality and high multilayer development. Using High TG materials offer the following properties to the finished product, such as:

• Higher stability
• Bear high power density designs
• High-temperature resistance
• Excellent PTH reliability
• Good mechanical properties
• High-temperature durability
• A high value of thermal stress resistance

TG PCB by PCBMay is often used for multilayer and HDI PCBs. We are serving different industries that meet the requirements of customers’ specifications in a fast lead time.

In addition, we can customize TG PCB according to your requirements, including no. layers, PCB size, finished board thicknesses, copper weight, surface finish, solder mask, silkscreen, etc.

When it comes to PCB manufacturing, PCBMay has the expertise and know-how you can depend upon. We have a stable professional team to help you bring life to your products. We are well-known for our leading high technology, best cost performance, high quality, on-time rate, fast delivery, and customer service.

If you want to learn more about how PCBMay provides TG PCB solutions, our team of experts can talk to you.

TG PCB: The Ultimate FAQ Guide

Are you worried about the temperature control of your electronic appliances?

TG PCB is an outstanding circuit that resists extreme temperatures. It ensures the long operating life of electronic devices. Construction materials of this PCB improve thermal conduction in circuit board layers.

PCBMay manufactures high-quality TG PCBs with great reliability. If you lack detailed knowledge about glass transition temperature in PCB, this FAQ guide is the best solution for you. We hope you will experience flawless PCB manufacturing through this guide. Let’s start.

What Is TG PCB?

TG PCB is a reliable electric circuit. It is a common part of modern electronic gadgets. It renders impressive mechanical and heat resistance to the appliances. The substrate also protects the sensitive circuit board from chemical contamination.

This PCB is mainly used in achieving stability at extreme temperatures. The high glass transition temperature is a desirable property for high-frequency multilayer PCB designs. That’s why TG PCB has become a prime choice for consumers.

TG PCB

Its effective thermal management and high compatibility improve its applications in versatile fields. TG PCB is composed of highly functional materials that ensure its thermal stability without compromising performance.

What Is TG In PCB Manufacturing?

TG indicates the glass transition temperature. It is one of the major mechanical properties of PCB manufacturing. At this temperature, a phase shift occurs in the PCB base materials from solid to a rubbery state.

That means, materials like fiberglass will go through a structural change while the temperature exceeds TG. TG never indicates the highest operating temperature. PCB assembly can tolerate this temperature before deteriorating its properties.

It usually depends on the molecular structure of the base materials. You can find three types of TG during the manufacturing of PCBs. Such as:

• Normal TG (130⁰C-140⁰C)
• Medium TG (150⁰C-160⁰C)
• High TG (more than 170⁰C)

TG In PCB Manufacturing

High TG is suitable for achieving better stability. But, excessive heat increases the viscosity. It makes a PCB board vulnerable to mechanical stresses. So, it is required to maintain a proper TG in PCB manufacturing concerning other related factors.

Watch the following video to learn more about the glass transition temperature:

What Are The Properties Of TG PCB?

TG PCB has some worthwhile electrical and mechanical properties. These are useful for delivering a stable electronic device. Its major features include-

• It is compatible with high power density
• High thermal stress resistance
• This PCB is supportive of lead-free manufacturing.
• Decomposition temperature is around 340⁰C.
• High temperature-resistant
• The moisture absorption rate is low
• UL94 V-0 rating in the vertical flammability test.
• High volume resistance
• The dielectric constant is 4.8-6 at a 1MHz frequency.
• Low coefficient of thermal expansion (3.8-4.2)
• High dielectric strength (around 45-50 KV)
• Halogen-free

TG PCB Properties

What Are TG Of Different PCB Materials?

The most common PCB materials are FR4 (copper-coated laminate), CEM-1, CEM-3, Teflon, polyimide, etc. These materials have different glass transition temperatures. Here is a chart of PCB base material’s TG-

TG PCB Materials

Since TG is a key feature of PCBA, you must consider it while choosing a circuit board for your projects. A proper TG ensures a stable functioning with great reliability.

What Is FR4 TG 135 PCB?

FR4 TG 135 PCB is a printed circuit board that’s glass transition temperature is 135⁰C. The basic TG 135 PCB material is FR-4. Besides, glass epoxy is used in its fabrication. These materials ensure controlled impedance during high-frequency signal transmission lines.

135⁰C is a standard glass transition temperature for PCB assembly. It is highly applicable in multilayer PCB designs. TG135 PCB materials offer outstanding PTH (Plated Through-hole) reliability.

FR4 TG 135 PCB

TG135 PCB improves the flexural strength of the electric circuits. Usually, FR4 materials with a normal TG value of 415 MPa indicate its high mechanical stability.

How To Compare Between FR4 TG 130 And TG 170 In PCB?

FR4 TG 130 and Fr4 TG 170 refers to standard and high glass transition temperatures in PCB manufacturing respectively. That’s why they have differences in some points.

Temperature Resistance

High TG PCB is more resistant to high temperatures compared to PCB with a normal TG. So, FR4 TG 170 PCB is a multiple-time better option for electronic projects that deal with extreme temperature changes.

Mechanical Stability

TG 130 PCB has a low glass transition temperature. So, its peel strength and flexural strength are not as high as TG 170 PCB. But, high heat makes high TG PCBs prone to breaking. In that sense, TG 130 PCB renders more stable performance in some cases.

Multilayer Designs

TG 170 PCB is a superlative choice for PCB designs having more than 8 layers. It provides more reliable thermal management than TG 130 in multilayer PCB applications.

Cost

PCB TG ratings significantly affect the manufacturing cost. High TG PCB requires a higher cost due to its expensive raw materials. Besides, the TG130 PCB manufacturing process is less complicated than that of the TG 170 PCB. It also reduces production costs.

TG 130 Vs TG 170 PCB

Application

TG 170 PCB is used in versatile applications. Its major uses are in automobiles, industrial control, routers, etc. TG 170 PCB materials are compatible with high operating temperatures. That’s why they have more utilization in the electronics world.

Chemical Stability

Standard TG circuit boards are less stable than TG 170 PCB in terms of chemical contamination. FR4 materials with high glass transition temperatures are resistant to moisture and dust. So, they can maintain chemical properties at high thermal stresses.

What Are The Major Applications Of TG PCB?

TG PCB is widely used in numerous advanced electronic devices. Its major applications are-

• Automobiles
• AC power supply
• Packaging materials
• Gateway
• Wifi booster
• Industrial controlling equipment
• Embedded substrate
• Inverter
• Routers
• antenna
• Metal industry
• PLC (Programmable Logic Controller)
• Embedded computer system

TG PCB Applications

Is TG PCB Moisture-resistant?

TG PCB is capable of resisting moisture and other chemical contaminations. It is composed of FR4, CEM-1, and various dielectric materials. These substances are supremely resistant to moisture.

That’s why you can apply this circuit board in a dense environment. Besides, high TG supports the use of conformal coating on the PCB surface. It improves the resistance against dust and moisture.

Again, fiberglass epoxy materials allow resin encapsulation that functions as a protective barrier for the PCB surface. So, all of these techniques are applicable in high TG circuit boards.

Thus, TG PCBs have become a reliable, chemically stable solution for high-volume electronic projects.

How To Compare Between High TG And Medium TG PCB?

High TG and Medium TG PCBs have some distinguishable issues. A comparative analysis between these two circuit boards is here for your convenience.

• High TG PCB definition refers to more than 170⁰C. But, medium TG indicates 150⁰C-160⁰C.
• High TG circuit boards operate at higher thermal states compared to PCBs having a medium glass transition temperature.
• TG 180 PCB, TG 170 PCB, etc offer better mechanical and chemical stability than TG 150 PCB.
• Medium TG is not as suitable for high-power PCB designs. On the contrary, High TG is a perfect choice for this purpose.
• TG 130 or TG 135 PCB (medium TG) fabrication is a little bit easier. But, TG 170 PCB (high TG) processing is complicated.
• High TG circuit boards are more expensive than standard and medium TG.
• If you think about thermal stress resistance, TG 180 PCB materials deliver better performance than medium TG.

High TG PCB

What Are The Benefits OF TG PCB?

TG PCBs are dependable circuits in the modern electronics world. These PCBs have countless benefits. That’s why PCB TG boards are supremely applicable in so many versatile sectors. Its most notable benefits are-

Stability

The glass transition temperature improves the mechanical, thermal, and chemical stability of devices. This is a crucial property that influences flexural strength, peel strength. So, TG PCB can resist extreme mechanical stresses. Besides, its chemical stability is also commendable.

High Operating Temperatures

TG circuit boards operate at a vast range of temperatures. Usually, printed circuit boards with high transition temperatures are tolerant to high thermal pressures. That’s why they remain functional at high temperatures.

Wide Range Of Applications

TG 150 PCB, TG 170 PCB, etc render superlative stability along with effective cost. So, these PCBs are highly applicable in various electronic projects. Standard TG boards have limited applications because of lower stability.

But, medium and high TG board’s compatibility with complicated designs is superb.

High Functionality

TG PCBs show tremendous functionality in advanced circuits. HDI circuit boards are composed of FR4 TG PCB materials. Moreover, impedance control and high dielectric breakdown promote its functionality to a certain extent.

Again, the transition temperature is a vital feature for the PCB prototype and straightforward assembly.

TG PCB Benefits

Multilayer Development

FR4 TG 180 PCB or other high TG circuit boards provides high multilayer development. You can customize its layer count based on the applications.

Durability

Smooth heat distribution and useful materials significantly develop its temperature durability. Besides, its moisture-resistant nature keeps it operative for a long period.

What Is The Most Effective Surface Finish Method Of TG PCB?

PCB surface finish is an effective way to protect a circuit board from corrosion and oxidation. Among various processes, ENIG and hard gold surface finishes are the most suitable for TG PCB.

ENIG, which means Electroless Nickel Immersion Gold broadens the surface of this PCB. So, component mounting becomes easy and effective during the PCB assembly. Again, TG hard gold PCBs improve the durability of electronic devices.

TG PCB Surface Finish

What Are The Limitations Of TG PCB?

TG PCB has some considerable limitations. Such as:

• The processing of high TG materials is complicated.
• PCB manufacturing cost increases due to the increase of PCB TG ratings.

We provide PCBs having high transition temperatures at competitive prices. Inquire about us immediately to get the best manufacturing service.

TG 180 PCB

How To Choose The Best Manufacturer OF TG PCB In China?

A trustworthy manufacturer can deliver you a reliable TG PCB. That’s why you have to be conscious in selecting the manufacturer. You must keep in mind the following considerations in this case.

• A TG PCB manufacturer should have long experience in this field. An experienced manufacturer can quickly solve critical problems of the PCB assembly.
• It needs to have sufficient storage of effective dielectric materials. Useful materials enable the manufacturer to provide instant fabrication and custom solutions.
• A well-equipped PCB factory and skilled technicians are mandatory for high-quality PCB manufacturing.
• You should check the manufacturing quality. If it is certified by RoHS and can manufacture IPC standard TG PCBs, you can depend on this manufacturer.
• You need to compare the manufacturing cost with other competitors in the Chinese PCB industry.
• A reliable manufacturer and supplier must have a proper testing facility.
• You should check customer care and consumer review to get ideas about its services.

We have already fulfilled all of these criteria. We have been manufacturing IPC class 2 and class 3 TG PCB for around 15 years. Contact us to get the best service in China.

What Are The Testing Methods Of TG PCB?

Numerous testing methods are applied to verify the thermal, mechanical, and electrical performance of TG PCB. You should choose a suitable inspection process concerning your budget and volume of the PCB manufacturing. Here, we are going to explain some reliable tests for your convenience.

FPT

Its full form is the Flying Probe Test. You can realize that electrical probes play a vital role in this testing method. Here, the inspector of this test sets the probes at different axes and makes connections between the PCB surface and probes.

Then, the testing machine provides different ratings at certain temperatures. You can detect voltage, current, power, etc electrical measurements while the probes touch the definite portion of the circuit board.

This process is free from additional fixtures. Here, the probes move from one point to another quickly.  It requires a lot of time in the case of high-volume PCB manufacturing. But, its low expense makes it a reliable testing method in recent times.

AOI

An automated optical inspection machine captures photographs of the TG PCB from different directions. Then, it compares these images with a perfect circuit board layout.

Thus, the AOI test detects dimensional faults.

Besides, it can find loose connections, open circuits, solder joints, etc. It takes minimum time in fault detection.  This test is preferable to large-scale PCB assembly.

Thermal Test

This test checks the thermal performance of TG PCB.  Here, a circuit board is placed under high and cold temperatures and the inspector detects its thermal conduction, highest operating temperatures, etc.

Functional Test

It checks the real performance of a PCB. That’s why a functional test is conducted at the last stage of manufacturing. You should test the electrical functionality of your TG PCB along with the FPT or AOI. Then, you will get a proper idea about your PCB efficiency.

How Does TG PCB Ensure A High Dielectric Breakdown?

In the case of TG PCB manufacturing, dielectric breakdown is a vital factor. It mainly depends on the PCB materials. The dielectric breakdown indicates the decrease in the insulating properties of FR4 materials.

A circuit board faces a breakdown of insulation when the applied voltage crosses the dielectric strength. That means you need to apply a lower voltage than the dielectric strength. It is the highest electric potential to maintain insulation during electron conduction in the PCB layers.

TG PCB High Dielectric Breakdown

FR4 materials ensure a suitable glass transition temperature along with high dielectric strength.  That’s why TG PCB can tolerate high electrical forces without comprising insulating properties. This feature refers to its smooth signal transmission in high-frequency PCB projects.

Which Copper Thickness Is Suitable For FR4 TG PCB?

Copper thickness plays a significant role in PCB manufacturing. Applying copper having a proper thickness is essential to control impedance in signal transmission systems.

TG PCB supports both thin and thick coppers. Usually, 1 oz PCB is suitable for all TG PCB definitions. But, you can apply heavy coppers like 6 oz, 10 oz, and so on. It totally depends on your project requirements.

TG PCB Copper Thickness

Is TG PCB Ideal For Multilayer Designs?

TG PCB is an ideal option for multilayer designs. Usually, circuit boards support high layer counts when there is a wide range of dielectric constants in different PCB layers. Again, PCB via placement is an important consideration in this case.

It indicates the thermal management of multilayer circuit boards. Most noteworthy, dielectric materials are mandatory for multilayer PCB stackup. TG PCB materials ensure different dielectric constants in individual layers.

Multilayer TG PCB Design

Moreover, high TG PCBs are reputed for heat dissipation. FR4, composite epoxy, etc materials improve dielectric features of circuit boards. So, you can use this PCB in multilayer (more than 8 layers) designs without any hesitation.

What Are The Considerations for Heat Dissipation In TG PCB?

The following considerations are important for proper heat dissipation in TG PCB-

• The operating temperature should be around 20⁰C less than the glass transition temperature.
• Effective use of thermal vias in suitable places improves heat dissipation among the PCB layers.
• Employing a heat sink is useful to keep the temperature within its threshold value.
• The convection process is used in transferring heat to the air. So, you can think about applying a cooling fan to bear the heat to the heat sink through the thermal vias.
• Power regulation modules should be placed effectively. You should ensure that the emitted heat can easily be channelized to the heat sink.

TG PCB Thermal Expansion

Watch this video to know more about heat dissipation:

What Is The Highest Operating Temperature Of FR4 HDI TG PCB?

FR4-based HDI PCB is compatible with high temperatures. Its operating temperatures are high because of its effective glass transition temperatures. Usually, a slight difference between the maximum operating temperature and TG is necessary for proper thermal management.

So, standard TG PCB operates at a maximum of 110⁰C. But, it needs to be around 150⁰C-160⁰C in the case of high TG PCB. You should consider the adverse effects of higher temperatures.

TG HDI PCB

Extreme temperatures are not suitable for the PCB manufacturing process. So, you have to apply perfect heat to ensure easy processing.

What Are The Important Parameters For TG PCB Manufacturing?

There are various parameters used in TG PCB manufacturing. These parameters depend on your applications. The most common parameters include-

PCB dimensions

You should choose the PCB board dimensions depending on your project requirements. Again, it is important to consider the required space for effective component placement in this case.

Number Of Layers

Layer count is a vital parameter in TG PCB manufacturing. High Tg circuit boards allow both single-layer and multilayer manufacturing.

Soldermask

Soldermask protects the circuit from external contaminants. It separates the circuit elements during manufacturing. That’s why it is an essential parameter for Tg PCB assembly.

Surface Finish

Different types of metallic and organic coatings are used in TG PCB. PCB surface finish prevents surface decay and ensures a high-quality performance for a long time.

Copper Thickness

The copper thickness of the finished board varies in the case of rigid or rigid-flex PCBs. Usually, 1 oz, 6 oz, 10 oz, etc copper thicknesses are used in TG PCB manufacturing concerning the applications.

Spacing

You need to consider this parameter to achieve a proper signal transmission rate. Perfect spacing between the PCB components and layers ensures a quality transmission of the frequency signals.

Hole Size

The hole diameter and aspect ratio are crucial factors for reliable TG PCB assembly. You have to place PTH and NPTH properly to confirm flawless manufacturing.

Conclusion

TG PCB promotes the quality of electric circuits to a large extent. It is worthwhile to inhibit the deviations of thermal properties due to high temperatures. That’s why you can’t think of a circuit board with a low glass transition temperature.

PCBMay supplies different types of top-level TG PCBs. In this guide, we have tried to cover all corners of this multifunctional circuit board. We hope it will significantly benefit you a lot. If you have more queries, feel free to contact us. Stay tuned.