KB-6169GT High Tg Halogen Free Laminates stand out as a premier choice for advanced electronics manufacturing. Designed to meet the needs of high voltage, high power, and high humidity environments, the KB-6169GT delivers exceptional thermal performance, superior electrical insulation, and eco friendly compliance, making it ideal for a wide range of industrial and automotive applications.
In this article, we’ll discuss what really characterizes the KB-6169GT 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 circuit board, so please feel free to contact us.

What is The KB-6169GT PCB Material?
KB-6169GT is built around a Halogen Free system (Halogen, antimony and red phosphorous free), making it not only environmentally friendly but also compliant with global safety and green regulations. Its Glass Transition Temperature (Tg>190°C) ensures dimensional stability at high processing and operating temperatures crucial for multilayer and high density PCBs.
In terms of electrical properties, KB-6169GT exhibits a stable Dielectric Constant (Dk 4.6 @1GHz) and a low Dissipation Factor (Df 0.011 @1GHz), contributing to low signal loss and reliable performance in high speed and high voltage applications. Thermal performance is a hallmark of KB-6169GT. It demonstrates excellent thermal reliability with extremely low Z-axis Coefficient of Thermal Expansion (Z-CTE), ensuring minimal stress on vias and interconnects during thermal cycling. Moreover, KB-6169GT provides high RTI (Relative Thermal Index), with CTI ≥ 600V, meeting FR15.1 standards and achieving MOT > 150°C ideal for designs requiring high insulation reliability and voltage endurance.
In addition, the laminate features robust Anti-CAF capability, reducing the risk of internal short circuits and enhancing long term product stability, especially in humid or high voltage environments.KB-6169GT is a high performance, High Tg Halogen Free laminate engineered to meet the stringent demands of applications exposed to high voltage, high humidity, and elevated temperatures. Designed with safety, performance, and sustainability in mind, it is quickly becoming a material of choice for forward looking electronic manufacturers.
The KB-6169GT PCB Material Data Sheet

Features of The KB-6169GT PCB Material
High Glass Transition Temperature (Tg >190°C)
The KB-6169GT offers a glass transition temperature (Tg) over 190°C, ensuring superior dimensional stability and mechanical integrity under high temperature conditions. This makes it an excellent choice for lead free soldering processes and thermally demanding applications.
Dielectric Constant (Dk)
With a dielectric constant (DK 4.6 @1GHz), the dielectric constant of the material is a measure of its ability to store electrical energy in a capacitor like manner. The laminate offer a stable Dk, this property measures a material’s ability to store some electrical energy in a given electric field.
Dissipation Factor (Df)
With a dissipation factor (DF 0.011 @1GHz) translates to reduced dielectric loss, ensuring minimal heat generation during signal transmission, which are essential for maintaining signal integrity and low power loss in both digital and analog circuits.
Halogen-Free Material
Meeting global environmental standards, the laminate is a halogen free laminate, which minimizes toxic emissions during manufacturing and disposal, contributing to a safer and more sustainable production process.
Excellent Thermal Reliability
With superior thermal endurance, the laminate performs reliably under thermal cycling, high temperature operation, and harsh environmental conditions, contributing to longer product life and reduced failure rates.
Extremely Low Z-CTE
The KB-6169GT features an extremely low Z-axis CTE, which significantly reduces the risk of plated through hole (PTH) failures under thermal stress. This ensures long term durability and reliability in multi layer PCBs.
Anti-CAF Capability
The PCB material also has excellent anti-CAF performance. The laminate’s chemistry and controlled glass treatment provide excellent resistance to CAF, reducing the risk of dendritic growths that can cause shorts in high humidity or high bias conditions.
High RTI, CTI ≥ 600V, FR15.1, MOT > 150°C
The laminate meets RTI standards with CTI ≥ 600V, FR15.1 flammability rating, and MOT over 150°C, making it suitable for high voltage applications and electric vehicle systems that demand excellent electrical insulation and thermal endurance.
What are The Applications of KB-6169GT PCB Material?
The unique properties of KB-6169GT make it the material of choice for demanding applications requiring uncompromising reliability and performance:
Electronics Used in Humid Environments
The laminate is ideal for use in humid environments, such as industrial sensors, outdoor equipment, and marine electronics, where electrical reliability and long term performance are crucial. Ideal for marine systems, outdoor sensors, and tropical industrial controls where moisture resistance is critical.
Electronic Components of Electric Vehicles (EVs)
The KB-6169GT is especially well suited for electric vehicle systems, including on board chargers, battery management systems (BMS), motor controllers, and DC-DC converters, where high voltage insulation, thermal endurance, and environmental compliance are key.
High Power and High Voltage Applications
For industrial power supplies, motor drives, inverters, and energy storage systems, the KB-6169GT provides the thermal and electrical stability required for continuous operation under high load conditions.
Automotive electronic (With CTI-600 and high voltage requirements)
With its CTI ≥ 600V, the laminate is ideal for automotive electronics that demand superior electrical insulation, such as engine control units (ECUs), advanced driver assistance systems (ADAS), and powertrain electronics.
Why Choose The KB-6169GT PCB Material For Your PCB?
As industries push voltage limits and operate in harsher conditions, KB-6169GT provides a future proof foundation. It’s halogen free chemistry meets evolving regulations, while its CTI 600 rating and thermal robustness solve reliability challenges in EVs, power systems, and humid environments. For engineers designing mission critical electronics, KB-6169GT isn’t just a laminate it’s insurance against field failures.
Furthermore, the laminate is easy to cut and drill, making it accessible for beginners in electronics while still meeting the demands of experienced users. This PCB material is highly versatile and suitable for a wide range of applications. If you are seeking a high quality product that aligns with your technical specifications, KB-6169GT represents an optimal choice. It is available in various thicknesses to accommodate diverse project requirements.
Ultimately, KB-6169GT high Tg laminate offer a compelling combination of thermal performance, electrical reliability, and manufacturing efficiency, making them an ideal choice for a wide range of applications. By integrating KB-6169GT into their designs, manufacturers can achieve high quality, durable PCBs while adhering to modern green manufacturing standards and maintaining cost efficiency.
If you have any further questions, please feel free to leave a comment below or contact QFPCB by email ([email protected]).











