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

Dow DOWSIL TC-4525 A B Silicone Compound

Dow DOWSIL TC-4525 A/B is a two-part thermally conductive silicone compound from Dow’s DOWSIL™ thermal management series. It offers excellent thermal conductivity (2.5 W/mK), low viscosity for easy dispensing, and reliable adhesion to metals and plastics. Ideal for potting, gap filling, and heat dissipation in EVs, power electronics, and LED lighting applications.
  • dow dowsil tc 4525 a b silicone compound_99a7a87b
  • dow dowsil tc 4525 a b silicone compound_99a7a87b

Features Of Dow DOWSIL TC-4525 A B Silicone Compound

  1. Two-part, addition-cure silicone compound offering excellent thermal conductivity and electrical insulation.

  2. Low viscosity in mixed state for easy dispensing and gap-filling in complex geometries.

  3. UL 94 V-0 rated for flame retardancy, supporting safety-critical electronic applications.

  4. Stable performance across wide temperature range (–40 °C to +180 °C) after full cure.

  5. No by-products generated during curing — ideal for hermetic and sensitive component encapsulation.

Typical Applications Of Dow DOWSIL TC-4525 A B Silicone Compound

  1. Thermal interface material (TIM) for power electronics and IGBT modules.

  2. Encapsulation and potting of LED drivers and automotive control units.

  3. Gap-filling under high-power semiconductor devices and battery management systems (BMS).

  4. Thermally conductive bonding in electric vehicle (EV) traction inverters and onboard chargers.

Specifications Of Dow DOWSIL TC-4525 A B Silicone Compound

Chemical TypePlatinum-catalyzed addition-cure silicone elastomer
Product FormTwo-component liquid (Part A + Part B)
AppearanceOpaque white paste (Part A), translucent beige paste (Part B)
Primary ApplicationsThermal management, electrical insulation, and protective encapsulation
Key FeaturesHigh thermal conductivity (~2.5 W/m·K), low thermal resistance, non-corrosive
BenefitsImproved heat dissipation, long-term reliability under thermal cycling, RoHS compliant
Cure SystemRoom temperature or elevated temperature (e.g., 60–125 °C) addition cure
Shelf Life12 months at 25 °C unopened; refrigerated storage recommended for extended stability


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