KERATHERM® Thermal Interface Foils – Efficient Thermal Management

In modern electronics development, miniaturization and increasing power density pose a central challenge: effective thermal management. Overheating can drastically shorten component lifespan and lead to system failure. 

To ensure reliable operation and longevity, efficient heat dissipation is essential. This is where KERATHERM® thermal interface foils from Kerafol®, available through alfatec GmbH & Co. KG, come into play. 

These thermal interface materials (TIMs) enable efficient heat transfer from the source (e.g., semiconductor) to the sink (e.g., heatsink). 

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What Are KERATHERM® Thermal Interface Foils?

KERATHERM® thermal interface foils are specialized materials that combine two key properties: high thermal conductivity and excellent electrical insulation. Based on polymers such as silicone, polyurethane, or epoxy, these foils are typically 100 to 500 µm thick, making them ideal for applications with tight tolerances and small gaps. 

Their main function is to ensure efficient heat transfer between components while providing high dielectric strength to prevent electrical breakdowns or arcing, enhancing the safety and reliability of your application. 

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Click here to go directly to our selection and data sheets for product series in the thermal interface foils section.

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Advantages of KERATHERM® Foils from Kerafol® via alfatec
High Thermal Conductivity: Efficient heat dissipation to optimize component temperature
Excellent Electrical Insulation: High dielectric strength for safe operation
Tight Thickness Tolerances: Ideal for precise gap sizes (0.1–0.5 mm)
Customizable Options: Glass fiber reinforcement for mechanical stability and easier handling, Self-adhesive versions for easier assembly
Material Variety: Available in silicone and silicone-free versions
Flexible Delivery Formats: Rolls or custom-cut parts
Typical Applications for KERATHERM® Foils
Power Electronics: IGBTs, MOSFETs, rectifiers
Automotive: ECUs, battery management, charging electronics
LED Lighting: COB modules, LED drivers
Telecommunications: Base stations, routers
Industrial Electronics: Power supplies, frequency converters
Consumer Electronics: Laptops, gaming consoles, flat screens
Medical Technology

Product Overview: KERATHERM® Thermal Interface Foils at alfatec

alfatec offers you a selection of KERATHERM® heat transfer foils with different technical parameters to meet your specific requirements for thermal conductivity and voltage resistance:
 

TypeBaseThermal Conductivity (W/mK) Thermal Resistance (K/W) Dielectric Strength (kV) Hardness (Shore A) Special Features 
86/82 KERATHERM® red Silicone 6.50.091.060 - 70Very high thermal conductivity
86/60 KERATHERM® pink Silicone 4.50.145.045 - 60High conductivity and insulation 
86/50 KERATHERM® pink Silicone 3.50.161.570 - 80High thermal conductivity 
86/25 KERATHERM® mint Silicone 2.50.2253.560 - 75High thermal conductivity 
86/30 KERATHERM® white Silicone 2.50.221.570 - 80 High thermal conductivity 
86/37 KERATHERM® green Silicone 1.80.328.065 - 75High insulation 
L 86/50 KERATHERM® PEEK Silicone-free 1.10.518.070 - 80High insulation (PEEK-based) 

Note: Glass fiber reinforcement and self-adhesive options available upon request for many types. 

Material, Structure, and Processing

KERATHERM® foils are based on silicone or silicone-free polymers filled with ceramic or metal oxide particles to enhance thermal conductivity

  • Structure Options: 
    • Glass fiber reinforcement for mechanical strength 
    • Self-adhesive coating for easier positioning during assembly 
  • Protective Films: Supplied with protective liners to prevent contamination or damage 
  • Processing: Available as roll stock or custom die-cut parts. Scrap removal is available upon request. 
Product series list
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Thermally conductive films

Here you can access our series in the area of heat conducting films.

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Our partner in the field of heat conducting films

Kerafol

Our partner KERAFOL offers a wide range of thermally conductive films and potting materials, which are used in microelectronics and sensor technology, among other things. The company develops and produces in Germany and, in addition to established standard products, also offers customised solutions, which can optionally be implemented silicone-free and after an automatic punching process.

 

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Request your personalized quote now

Optimize the thermal management of your electronics with high-quality KERATHERM® thermal interface materials from Kerafol® in collaboration with alfatec. Benefit from our technical expertise and comprehensive service.

See the quality and performance of our thermal interface materials for yourself. Request a no-obligation quote today or download the data sheets.

alfatec – your partner for high-quality electronic components

As your expert partner for electronic components, alfatec supports you in selecting the right thermal interface materials for your applications. We offer comprehensive advice and are happy to answer any questions you may have about power modules.

Do you have questions about our thermal interface materials or would you like a personal consultation? Feel free to contact us.