High Temperature PCB

When fabricating PCBs for high temperature applications, the glass transition temperature of PCB is extremely important to consider. If the temperature in the application exceeds the “Tg” value, it leads to issues related to the board’s performance. Not only can the rise in temperature lead to the material expanding, with different materials having different thermal expansion coefficients, there will also be mechanical stress leading to micro cracks. While some of these could be detected during electrical testing, some may go unnoticed, leading to failure of the product and costing you, well-earned reputation.

At Technotronix, we specialize in High Tg PCBs (high temperature printed circuit boards) that offer heat resistance. Made of FR-4 substrate material, they are widely used across industries as they provide better heat resistance, as well as mechanical and chemical stability for the board.

Capabilities in High Temperature PCBs

We offer high Tg printed circuit boards that offer flawless performance in high temperature applications. With over 4 decades of experience in the industry, we are armed with the following capabilities:

  • Our PCBs are made of flame-retardant epoxy material that stands the test of high temperature.
  • Our printed circuit boards have mechanical strength and dimensional stability.
  • We offer a wide range of surface treatment options such as:
    • HASL /Lead Free HASL
    • ENIG /Immersion Gold/Immersion Silver/Immersion Tin
    • OSP
    • In addition, we offer multi layered boards with a minimum size of 10*15mm and a maximum size of 500*600mm
    • The boards come with a wide range of solder mask options
  • We adhere to the highest quality standards and our boards are ISO 9001:2015, AS9100 Rev. D Certified.
Capabilities in High Temperature PCBs
Capability Standard
Material Tg140 FR-4, Tg150 FR-4, Tg170 FR-4, Tg150 FR-4 (Halogen-free), Tg170 FR-4 (Halogen-free)
Min. Track/Spacing 2mil
Min. Hole Size 0.15mm
Finished Cooper 0.5-13oz
Board Thickness 0.2-6mm
Surface Finishing HASL lead free, Immersion gold, OSP, Hard Gold, Immersion Gold, Immersion
Solder Mask Green, Red, Yellow, Blue, White, Black, Purple, Matte Black, Matte green
Silkscreen White, Black
Via Process Tenting Gold, Immersion
Testing Fly Probe Testing (Free) and A.O.I. testing

Benefits of High Tg Printed circuit boards

High Tg materials are known to:
  • Be resistant to high temperatures
  • Have low thermal expansion
  • Have mechanical strength
  • Have high thermal stress resistance
  • Long delamination durability
  • Low Z axis expansion (CTE)
High Tg PCBs, therefore, offer:
  • Improved stability of the device including heat and moisture resistance
  • A great solution when you are dealing with a device that has a high heat generation rate.
  • An ideal solution for multilayer PCBs, which have dense circuits.

Applications of High temperature printed circuit boards

High Tg PCBs find extensive application in a wide range of industries that operate at relatively high temperatures including but not limited to:

High Temperature PCB

Engine controllers

High Tg PCB

Oil drilling equipment

High Temperature PCBs

Medical diagnostic instruments

High Tg PCBs



Wi-Fi Boosters

High Temperature PCB USA

Computer systems

High Temperature Printed Circuit Board

Ac Power Supplies

Technotronix Advantage for delivering printed circuit boards with high temperature

When you are dealing with high temperature applications where you need flawless performance, you can only rely on partners that have the requisite expertise and experience in offering quality products. At Technotronix, we have extensive experience in fabricating high Tg PCBs that guarantee reliability. Not only are we equipped with state-of-the-art equipment but also with experienced engineers that have a body of experience in producing performance driven PCBs. With the long-term operating temperature of the application known, they would select the material that is most appropriate for your requirements. With our facilities being RoHS compliant, in any case our material is suited to high reflow soldering temperatures. However, for boards that need to operate at high temperature conditions we provide a selection of PCB materials.

If you aren’t sure if your operation requires a high Tg board, allow our PCB experts to guide you on just how a high Tg board works and what it can do for you. Regardless of the scope or complexity of your requirement, we have the necessary technical expertise to fulfill it.

Our extensive network of suppliers ensures that we offer optimal costs. Importantly, we understand the market dynamics and have a customer-focused approach that allows us to offer quick turnaround times. Reach out to us with your bespoke high temperature PCB requirements and we would be happy to get back with custom quotes.

Whether you are looking for a prototype PCBs or a large production run, we do not let quantities come in the way of our focus on product quality. A huge body of satisfied customers, stand as the biggest testimony to our success.

Simply upload your design files, indicate the Tg level and let our experts do the rest!

High Tg Printed Circuit Boards FAQs

Tg refers to the glass transition temperature of a Printed Circuit Board. It is that temperature at which the base material of a PCB starts to change from a brittle condition to a soft, elastic one, thereby impacting performance. A PCB whose glass transition temperature (Tg) is greater than 170 ℃ is known as a High Tg PCB.

They are resistant to high temperatures, have long delamination durability among other things.

If the temperature in the application exceeds the “Tg” value, it leads to issues related to the board’s performance. With different materials having different thermal expansion coefficients, there will be mechanical stress leading to micro cracks. Thus, you need to go with a manufacturer who has the necessary experience and expertise in fabricating these boards.

Yes, we can provide up to 25 layers high temperature PCBs depending on your requirements.

Definitely, we will be happy to guide you! Feel free to contact us at [email protected]!

Yes, we cater to a wide range of surface finishes.

Yes, we have a wide range of solder mask options available for any type of industrial high Tg printed circuit boards.

Yes, we offer custom quotes basis your bespoke requirements.

Yes, whether your requirement is prototype printed circuit boards or a full production run, we are well-equipped.
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Do you have any High Temperature PCB requirements? Request a free High Temperature PCB Fabrication quote. Alternatively, email BoM, Gerber files, and other required details at [email protected] or call us 714/630-9200.


PCB Assembled in 24 hours

Best Turn around time for Prototype PCB assembly.
Kitted and Turn-Key option as per customers requirement.


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