Thermal Management Solutions: Heat Dissipation Materials
In the landscape of modern electronics, miniaturization and increased component performance have made thermal dissipation a top priority. Without effective control, excessive heat degrades reliability, reduces device operating life, and compromises the performance of EMI shielding systems.
As a Preferred Distributor & Converter for Laird (now part of Qnity Electronics), Euro Technologies offers a comprehensive portfolio of Thermal Management solutions, designed to maximize heat transfer between critical components (such as CPUs, GPUs, power transistors) and heatsinks or metallic chassis.
The Mechanics of Thermal Interfacing: Overcoming the Air Gap Barrier
In high-power electronic assemblies, even the most precisely machined metal surfaces exhibit microscopic roughness and non-planar defects. When a heatsink is pressed directly against a semiconductor component, microscopic air pockets remain trapped between the two interfaces. Because stagnant air has an exceptionally low thermal conductivity (approximately 0.026 W/mK), these microscopic gaps act as severe thermal insulators, causing localized hotspots, thermal runaway, and rapid component degradation.
To overcome this bottleneck, hardware engineers utilize advanced Thermal Interface Materials (TIMs). The primary mechanism of a TIM is to completely displace the trapped air, flowing into the surface microscopic imperfections to establish a continuous, low-resistance thermal path.
Thermal Material Selection Matrix
| Thermal Technology | Thermal Conductivity (W/mK) | Conformability / Compression | Ideal Application | Converting Potential |
| Thermal Gap Fillers | 1.0 – 10.0+ | High | Gap filling between component and heatsink | High (Custom die-cutting) |
| Phase Change Materials (PCM) | 3.0 – 5.0 | Medium (varying with temp) | Applications requiring minimum bond lines | Medium (Pre-cut shapes) |
| Thermal Greases and Pastes | 2.0 – 6.0 | Maximum (Fluid) | Surfaces with extreme roughness | Low (Dispensing) |
| Thermal Insulators | 1.0 – 4.0 | Medium | Applications requiring electrical isolation | High (Die-cutting) |
Thermal Gap Fillers: Versatility and Performance
Thermal Gap Fillers (thermal pads) are the most common and versatile solution. Thanks to their high conformability, they are able to eliminate air trapped between irregular or non-coplanar surfaces, drastically reducing the total thermal resistance.
Euro Technologies converts these materials based on customers’ technical drawings, ensuring that each pad fits perfectly with the geometry of the component to be cooled.
Phase Change Materials (PCM): High-Performance Wetting
Phase Change Materials (PCM) represent the cutting edge of high-performance thermal interfaces. Solid at room temperature, these materials transition to a semi-fluid state once the component reaches its specific operating temperature, allowing them to wet the mating surfaces and minimize bond line thickness.
Euro Technologies custom-cuts these advanced Laird substrates into precise, pre-shaped configurations tailored to your applications.
Thermal Greases and Pastes: Ultimate Conformability
Thermal Greases and Pastes are the ideal choice for applications requiring an ultra-thin interface layer across surfaces with high microscopic roughness or planarity defects. Due to their fluid nature, they provide maximum conformability, easily flowing into the finest surface imperfections under minimal mounting pressure.
Euro Technologies provides high-stability, non-curing, and non-bleeding compounds from Laird’s premium portfolio, for automated robotic dispensing systems in high-volume production lines.
Thermal Insulators: Heat Dissipation and Electrical Isolation
Thermal Insulators are engineered for electronic designs that demand efficient heat transfer alongside high dielectric strength and electrical isolation. Composed of a thermally conductive rubber or elastomer reinforced with a rugged carrier like fiberglass or polyimide film, they prevent electrical shorts between high-voltage components and grounded heatsinks.
Euro Technologies utilizes advanced precision die-cutting and kiss-cutting capabilities to convert these rugged materials into custom shapes, multi-pin sheets, or configurations with specific pull-tabs, streamlining your manufacturing process.
Synergy between Thermal Management and EMI Protection
Proper thermal design must integrate EMI protection. Many of our Gap Fillers are designed to be combined with shielding elements:
- If a component requires both dissipation and protection from interference, we can co-design solutions that integrate thermal materials with EMC gaskets
- In high-frequency environments, the use of Microwave Absorbers must be balanced with dissipation paths that do not hinder RF performance.
The Euro Technologies Advantage: Technical Expertise and Converting
Heat management is not just a matter of material, but of mechanical integration. As an engineering partner of Laird/Qnity Electronics, we support customers in:
- Material selection: Design analysis to define the necessary conductivity (W/mK).
- Precision converting: Die-cutting, laser cutting, and kiss-cutting to simplify assembly on the production line.
- Cost optimization: Solutions that reduce the number of components through function integration (e.g., thermal pads with adhesion properties or electrical protection).
Do you have a thermal dissipation problem?
Don’t let overheating compromise your design. Contact our engineering team for a thermal management consultation and find out how we can customize our solutions for your application.
Frequently Asked Questions on Thermal Management
What is the fundamental difference in application between a thermal gap filler and a phase-change material (PCM)?
The difference lies in the management of mechanical tolerances and bond line thickness:
- Thermal Gap Fillers (thermal pads): These are soft, conformable materials ideal for filling macroscopic and variable gaps (from 0.5 mm to over 5 mm) between non-coplanar components and the heat sink.
- Phase-Change Materials (PCMs): These change state (from solid to semi-fluid) upon reaching the component’s operating temperature. This allows them to flow and microscopically wet the surfaces, minimising thermal resistance. They are suitable for microscopic gaps and high-performance applications requiring a minimal bond line.
How can the coexistence and synergy between thermal management and EMI shielding be managed within the same hardware design?
In modern high-density electronic architectures, a power component often generates both critical heat and electromagnetic noise. Addressing these issues separately results in wasted space and increased costs. Euro Technologies addresses this challenge by offering multifunctional solutions: we co-design sub-assemblies in which thermal interface materials (TIMs) work in conjunction with or are integrated into EMC gaskets or microwave absorbers, creating preferential pathways through which heat is dissipated towards the chassis without creating geometric gaps that could allow RFI interference to pass through.
How do custom conversion capabilities (die-cutting, kiss-cutting) optimise the assembly of thermal interface materials (TIMs) on the production line?
Supplying a thermal interface material is not just about guaranteeing a specific thermal conductivity value (W/mK). For B2B manufacturers, efficiency on the assembly line is crucial. Through in-house precision die-cutting and kiss-cutting processes, Euro Technologies transforms Laird/Qnity materials into ready-to-use shaped parts, supplied on reels (tape-and-reel) or sheets with pull-tabs. This level of customisation reduces manual placement time, eliminates alignment errors and makes the components compatible with automated pick-and-place systems.
The leading partner in Europe for Laird solutions
Euro Technologies is the leading partner in Europe for Laird Performance Materials’ solutions for EMI shielding, thermal management and RF absorbers for industrial applications, acting as an authorised distributor and converter.
Thanks to an approach focused on technical value and collaboration with customers, Euro Technologies supports the development of reliable electronic systems that meet market requirements.
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If your company is facing industrial challenges, our team is ready to support you. With our proven experience and strong commitment to innovation, we invite you to get in touch: together, we can turn engineering challenges into opportunities for growth and success.
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