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

DOW DOWSIL TC-4529 Thermally Conductive Silicone

DOW DOWSIL TC-4529 Thermally Conductive Silicone is a high-performance, two-part addition-cure silicone elastomer engineered for efficient heat dissipation in power electronics. It offers excellent thermal conductivity (1.5 W/mK), low modulus, superior dielectric strength, and long-term stability across wide temperature ranges (-40°C to 200°C), ensuring reliable bonding, potting, and encapsulation.
  • dow dowsil tc 4529 thermally conductive silicone_3e501273
  • dow dowsil tc 4529 thermally conductive silicone_3e501273

Features Of DOW DOWSIL TC-4529 Thermally Conductive Silicone

  1. High thermal conductivity (1.5 W/m·K) for efficient heat dissipation in demanding electronic assemblies.

  2. Low modulus and excellent compressibility, enabling reliable interfacial contact under minimal clamping pressure.

  3. UL 94 V-0 rated flame retardancy for enhanced safety in power electronics and lighting applications.

  4. Non-sag, paste-like consistency ensures precise dispensing and stable gap-filling without slumping or migration.

  5. Wide operating temperature range from –50 °C to +200 °C, maintaining performance across thermal cycling conditions.

Typical Applications Of DOW DOWSIL TC-4529 Thermally Conductive Silicone

  1. Thermal interface material (TIM) between IGBT modules and heat sinks in electric vehicle inverters.

  2. Heat transfer medium for LED drivers and high-power LED packages in outdoor lighting systems.

  3. Gap-filling compound for battery management systems (BMS) and power conversion units in renewable energy inverters.

  4. Thermal coupling layer in 5G base station power amplifiers and RF power modules.

  5. Die-attach and heat-spreading solution for high-brightness automotive lighting assemblies.

Specifications Of DOW DOWSIL TC-4529 Thermally Conductive Silicone

Chemical TypeRoom Temperature Vulcanizing (RTV) silicone elastomer
Product FormPaste (non-sag, thixotropic)
AppearanceGray, uniform paste
Primary ApplicationsThermal interface material (TIM), gap filler, heat sink bonding
Key FeaturesElectrically insulating, flame retardant (UL 94 V-0), low outgassing
Thermal Conductivity1.5 W/m·K (ASTM D5470)
Operating Temperature Range–50 °C to +200 °C
Cure MechanismMoisture-cure (acetoxy type)


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