QFPCB factory specializes in providing turnkey service of customized PCB & PCBA solutions to meet the diverse needs of our clients. Our factory is committed to providing one-stop PCB & SMT assemble solutions to drive technological advancement and innovation.
In this article, we’ll discuss what really characterizes the high Tg EM-827 laminate. The relevant information is available for pcb design engineers to refer to in the selection of materials, And you can also call QFPCB to discuss. QFPCB offers the best services when it comes to the high Tg or high-performance pcb, so please feel free to contact us.

What is the EM-827 PCB material?
The EM-827 PCB Material is a high-performance, proprietary resin system designed for advanced applications. This material boasts features such as RoHS compliant and excellent thermal stability for lead-free process capabilities.
Additionally, it exhibits excellent dielectric and thermal properties. This laminate comprises multifunctional epoxy resin with E-glass fabric reinforcement. Also, this epoxy resin system offers better thermal performance and low CTE value. It has a glass transition temperature of 180 degrees Celsius, making it suitable for multilayer printed wiring board applications that demand maximum thermal reliability and performance.
What is the feature of the EM-827 PCB material?

High glass transition temperature (Tg)
The Tg value of EM-827 is 180 degrees Celsius,the Dk is 4.3 and Df is 0.019. Also, EM-827 features great thermal performance due to it’s high Tg value. so that it possesses enhanced mechanical properties at elevated temperatures compared to standard polymers.
High Decomposition temperature (Td)
The decomposition temperature of EM-827 is 350 degrees Celsius at 5% weight loss. This helps to ensure high thermal performance. Also, this value indicates that the material can barely decompose chemically.
Exceptional thermal conductivity
The thermal conductivity of EM-827 is 0.44 W/m.K,and this measures the rate of heat transfer in a PCB material. The thermal conductivity of EM-827 PCB material contributes to it’s performance. Also, it is reliable in the operation environment all through the lifetime of the product. Both aspects of thermal reliability shows the reliability of this printed circuit board material.
Low Water Absorption
Another great feature of the material is its low water absorption rate. With this feature, water will not penetrate it. What we mean is that the material is useful in moisture-laden applications with less worry.
Lead-free assembly compatible
Materials meet lead-free assembly requirements and meet RoHS standards. The material works fine with lead-free laminate materials. This makes them much safer when using them.This also means that you will make use of the material without having to worry about environmental pollution or hazardous substances.
Low Z-axis CTE
In addition to other features,Very Low Z-axis CTE < 3.0% (50~260oC). With this property, that EM-827 is a thermally stable material for PCB applications. This shows how much the Z axis of the EM-827 PCB will contract or expand when cooled or heated.
What is the application of the EM-827 PCB material?
Below are some of the typical marked applications of the Material. These include to server, computer, consumer clectronics .
Servers
EM-827 PCB material works for storage facilities. This laminate material is applicable in services like routers and switch operation. This laminate has complete curing. For company’s routers, this laminate material has to transmit signals with no glitch. That is why with this laminate, receivers can easily get data processed and recorded.
Computer equipment
The material is very important in modern equipment for communication like cell phones and computers. This is why it is possible to have cell phones that are waterproof, which will function effectively under wet or water conditions.
Consumer clectronics
Another aspect where the Material is applicable is consumer electronics. This material allows the routing of power and signals between these consumer electronics and devices. This is possible due to the different components playing different roles.
What is the thermal performance of the EM-827 PCB material?
The High Speed PCB material exhibits a glass transition temperature of 180 degrees Celsius, indicating a high Tg value. This characteristic allows the material to attain glassy-state properties such as rigidity, stiffness, and brittleness upon cooling. The thermal performance of the material is closely related to both its glass transition temperature and decomposition temperature.
Also, the EM-827 PCB material has a decomposition temperature of 350 degrees Celsius. This underscores the robustness of the material, as it requires a significant thermal threshold of 350 degrees for chemical decomposition.
What is the electrical performance of the EM-827 PCB material?
The electrical performance of the EM-827 PCB material is closely related to its dielectric constant and dissipation factor.
The EM-827 PCB material exhibits a dielectric constant of 4.3, indicating its significance in impedance considerations and signal integrity. Furthermore, it possesses a remarkably low dissipation factor of 0.019, highlighting its capability to store energy effectively while functioning as an insulator.
The material is a reliable and high performance material for PCB fabrication. Also, this PCB material features great properties that enhance the functionality of pcb boards. By choosing EM-827 laminate, you can ensure reliable, high-quality, and long-lasting PCB performance.