Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow DOWSIL TC-5629 TC Silicone Rubber

Dow DOWSIL TC-5629 TC Silicone Rubber is a thermally conductive, electrically insulating liquid silicone rubber designed for potting, encapsulation and thermal interface applications. It offers excellent flow, low viscosity, rapid room-temperature cure and superior long-term reliability across automotive, power electronics and LED lighting sectors.
  • dow dowsil tc 5629 tc silicone rubber_8ebfecd2
  • dow dowsil tc 5629 tc silicone rubber_8ebfecd2

Features Of Dow DOWSIL TC-5629 TC Silicone Rubber

  1. High thermal conductivity (2.9 W/m·K) for efficient heat dissipation in demanding electronic applications.

  2. Low modulus and excellent conformability, enabling stress-free interface bonding on irregular or delicate surfaces.

  3. UL 94 V-0 rated flame retardancy without halogen additives, supporting safety-compliant designs.

  4. Long-term stability across -40 °C to +200 °C operating range with minimal compression set.

  5. Thermally conductive yet electrically insulating — ideal for isolating high-voltage components while managing heat.

Typical Applications Of Dow DOWSIL TC-5629 TC Silicone Rubber

  1. Thermal interface material (TIM) for power modules and IGBTs in electric vehicles and renewable energy inverters.

  2. Heat transfer pads between CPUs/GPUs and heatsinks in high-performance computing and 5G infrastructure equipment.

  3. Gap-filling elastomer for LED drivers, battery management systems (BMS), and onboard chargers (OBC).

  4. Dielectric thermal padding in industrial motor drives and rail traction converters.

Specifications Of Dow DOWSIL TC-5629 TC Silicone Rubber

Chemical TypePlatinum-cured addition-cure silicone elastomer
Product FormSheet (standard thicknesses: 0.5–3.0 mm; customizable die-cut)
AppearanceOpaque gray, flexible solid sheet
Thermal Conductivity2.9 W/m·K (ASTM D5470)
Dielectric Strength≥18 kV/mm (ASTM D149)
Volume Resistivity≥1 × 10¹⁵ Ω·cm (ASTM D257)
UL RecognitionUL 94 V-0, UL 746C (RTI Elec/Imp: 180 °C)
Operating Temperature Range-40 °C to +200 °C (continuous)


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