DOWSIL™ TC-5515 LT is a premium two-part, low-density silicone gap filler engineered to deliver high-efficiency thermal dissipation for heat-sensitive electronics and electric vehicle (EV) components. Curing at room temperature or with heat acceleration, this soft, compliant elastomer bridges the gap between heat-generating components and cooling sinks to ensure long-term operational reliability.
Key Features & Benefits:- Efficient Heat Transfer: Delivers a high thermal conductivity of 2.0 W/m.K with low surface tension for optimal surface wetting and reduced contact resistance.
- Thixotropic & Non-Flowable: Maintains its position in both flat and vertical orientations post-dispensing, preventing slump during assembly.
- Stress-Relieving & Reworkable: Cures to a soft, compliant material (Shore 00 65) that absorbs shock and vibration while offering a tacky surface for easy post-assembly rework.
- Flexible Processing: Easy 1:1 mix ratio (by weight or volume) with room-temperature curing (360 mins) or accelerated heat curing (30 mins at 80°C).
- Robust Flame & Electrical Protection: UL 94 V-0 flame rating combined with high dielectric strength (19.0 kV/mm) for sensitive circuit safety.
- Wide Operating Range: Performs reliably across extreme temperature ranges from -45°C to 150°C.
Typical Applications:- Electric Vehicle (EV) Systems: Battery packs, power electronics, and control unit modules.
- Electronics & Assemblies: Printed circuit boards (PCBs), microprocessors, and high-density power modules.
- General Heat Dissipation: Any application requiring heat transfer from a component to an aluminum housing or cold plate.
Product Specifications:- Thermal Conductivity: 2.0 W/m.K
- Mix Ratio: 1:1 (Part A: White / Part B: Blue)
- Specific Gravity (Cured): 1.95
- Working Time @25°C: 90 minutes
- Dielectric Strength: 19.0 kV/mm
- Flammability Rating: UL 94 V-0
