High Thermal Conductivity Silicone Thermal Pad 1.5mm Soft Gap Filler Sheet for LED Cooling Module

Developed for demanding thermal management architectures, this high thermal conductivity silicone thermal pad is a professional-grade thermal interface material engineered to deliver outstanding heat transfer and perfect gap filling between heat-generating components and their heat sinks. Manufactured from a proprietary silicone elastomer matrix densely loaded with advanced ceramic fillers, the pad efficiently conducts heat away from processors, power modules, MOSFETs, LED arrays, and battery packs while simultaneously absorbing mechanical tolerances, vibration, and microscopic surface irregularities. Unlike thermal grease or liquid gap filler, this soft silicone gap filler requires no curing, no dispensing equipment, and no clean-up, making it a clean and production-friendly solution for automated assembly lines. With a compressible, conformable structure and a broad operating temperature range, it maintains stable thermal performance across the entire life cycle of the electronic device and resists pump-out, drying, and migration far better than conventional paste.

• High Thermal Conductivity: Available in 1.5, 3.0, and 6.0 W/mK grades, the ceramic-filled silicone matrix rapidly transfers heat from dense power electronics to the cooling structure, reducing junction temperatures and extending component life.
• Perfect Gap Filling: The ultra-soft, highly compressible formulation conforms to uneven surfaces and fills air gaps completely, eliminating the insulating air pockets that degrade thermal performance in real-world assemblies.
• Low Thermal Resistance: A thin, uniform bond line at moderate pressure minimizes interface resistance, so more heat flows through the pad and less is trapped at the contact surface.
• Excellent Compressibility: With a hardness of Shore 00 20 to 50, the pad cushions fragile dies and solder joints against shock and vibration while still maintaining reliable thermal contact.
• High Temperature Resistance: Rated from -40°C to +200°C and compliant with UL94 V-0 flame rating, the material remains stable and electrically insulating even under continuous thermal cycling.
• Electrically Insulating: High dielectric strength above 6 kV/mm and volume resistivity greater than 10¹² Ω·cm provide safe electrical isolation between live components and grounded heat sinks.
• Easy Fabrication and Assembly: The pad can be die-cut, laminated with adhesive, or supplied in custom die-cut shapes, enabling fast, repeatable installation on high-volume production lines.

The silicone thermal pad is widely used where reliable, long-term heat dissipation is critical. In LED lighting, it transfers heat from the LED board to the aluminum housing, preventing lumen decay and color shift. In power electronics, it cools MOSFETs, IGBT modules, rectifiers, and DC-DC converters mounted on heat sinks. In consumer and industrial electronics, it manages heat in CPUs, GPUs, motor drivers, and power supplies. In new energy systems, it improves safety and performance in battery modules, BMS boards, and inverters. The pad is equally suitable for telecommunications equipment, automotive electronics, and any application requiring repeatable, clean, and electrically insulating thermal coupling between two surfaces with imperfect flatness.

Each silicone thermal pad is protected with release film, packed with shock-proof foam, and shipped in export-grade corrugated cartons to ensure it arrives free of contamination and deformation. Every production batch is inspected for thermal conductivity, thickness tolerance, hardness, dielectric strength, and surface cleanliness, and full test reports can be provided on request. Custom die-cut shapes, adhesive backing, and private labeling are available to match your assembly process. With stable supply capacity, flexible minimum order quantities, and fast sample lead times, we support both prototype development and large-volume programs, and our engineering team is ready to help you select the optimum grade, thickness, and compressibility for your specific thermal design.