As electronic devices become smaller, faster, and more powerful, effective thermal management has become essential for ensuring reliable operation and long product life. Excess heat can reduce performance, accelerate component ageing, and ultimately lead to system failure.
SARCON® is Fujipoly's family of thermally conductive, electrically insulating thermal interface materials (TIMs). Designed to improve heat transfer between heat-generating components and cooling devices such as heat sinks, housings, and cold plates, SARCON® materials are used across a wide range of industries, including automotive, industrial automation, telecommunications, medical technology, consumer electronics, and energy storage.
Rather than a single material, SARCON® consists of several material technologies, each developed to address different thermal management challenges. Depending on the application, engineers can choose materials that prioritise mechanical durability, low compression force, high conformability, tolerance compensation, or automated dispensing.
Manufactured using advanced silicone formulations and thermally conductive fillers, SARCON® materials combine efficient heat transfer with electrical insulation, flame retardancy, and long-term reliability.
No manufactured surface is perfectly flat. Even precision-machined metal surfaces contain microscopic peaks and valleys that create tiny air pockets when two components are assembled together.
Although these gaps are often invisible, they have a significant impact on thermal performance because air is a very poor conductor of heat. The trapped air increases thermal resistance, making it more difficult for heat to move from the electronic component to the cooling system.
Thermal interface materials are designed to eliminate these air gaps. By conforming to the surface irregularities and replacing insulating air with a thermally conductive material, they create a more efficient thermal path between the heat source and the heat sink.
The result is improved cooling efficiency, lower operating temperatures, and greater long-term reliability.
Efficient thermal management depends on minimising thermal resistance between the heat source and the cooling device. SARCON® materials achieve this by improving thermal contact between the mating surfaces.
Different SARCON® material families achieve this in different ways. Some provide excellent mechanical stability for applications requiring durable thermal pads, while others are designed to conform to uneven surfaces, accommodate large component height variations, or simplify automated manufacturing.
Regardless of the material technology selected, every SARCON® product is designed with the same objective: to maximise heat transfer while maintaining reliable performance throughout the lifetime of the product.
For more than 50 years, Fujipoly has specialised in the development and manufacture of advanced thermal interface materials in Japan. This experience has resulted in one of the industry's broadest portfolios of thermal management solutions.
Key advantages of the SARCON® family include:
Because no two thermal management challenges are identical, Fujipoly also works closely with customers to develop customised solutions that optimise both thermal performance and manufacturability.
Different applications require different material characteristics. To meet these varying requirements, SARCON® is available in four primary material families.
SARCON® Rubber Type materials are thermally conductive silicone rubbers that provide an excellent balance of thermal conductivity, electrical insulation, mechanical durability, and dimensional stability.
Available in a wide variety of sheet materials, mouldings, extrusions, sleeves, and converted parts, they are well suited to applications requiring robust and reliable thermal interfaces.
Learn more about SARCON® Rubber Type →
SARCON® Gel Type materials are soft thermally conductive silicone gel sheets designed for applications requiring low compression force and excellent surface conformability.
Their inherent tackiness helps maintain intimate contact with mating surfaces while minimising mechanical stress on sensitive electronic assemblies. Selected grades are also available with electromagnetic interference (EMI) suppression and non-silicone formulations.
Learn more about SARCON® Gel Type →
SARCON® Putty Type materials are highly conformable, clay-like thermal interface materials developed to accommodate large manufacturing tolerances and complex surface geometries.
Their high compressibility enables efficient thermal contact across uneven interfaces while remaining easy to handle during assembly.
Learn more about SARCON® Putty Type →
SARCON® Form-in-Place materials are one-part dispensable, uncurable thermal interface compounds designed for automated manufacturing processes.
Applied directly onto components or housings, they conform precisely to the application geometry and provide reliable thermal performance in designs where conventional thermal pads may be difficult to install.
Learn more about SARCON® Form-in-Place →
SARCON® materials are used across a wide range of applications where efficient heat transfer and long-term reliability are required, including power supplies, power semiconductors, automotive electronics, battery systems, motor drives and inverters, and industrial equipment, among many others.
Each application has specific thermal management requirements, and SARCON® materials can be selected to suit different performance, mechanical, and electrical needs.
Selecting the right thermal interface material involves much more than choosing the highest thermal conductivity.
Engineers must also consider factors such as gap size, surface flatness, component height variation, mounting pressure, electrical insulation requirements, operating temperature, manufacturing processes, and long-term reliability.
Because each SARCON® material family offers different mechanical and thermal characteristics, selecting the most suitable solution requires balancing all of these factors for the specific application.
Our engineering team can help you find the right Fujipoly solution for your specific application. Get in touch to discuss your requirements or request a sample.
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