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

Dow DOWSIL SE 4485 Thermally Conductive Adhesive

Dow DOWSIL SE 4485 is a thermally conductive adhesive from Dow’s DOWSIL silicone portfolio. It delivers high thermal conductivity (1.5 W/mK), low bond line thickness, and excellent adhesion to metals, plastics, and ceramics. Ideal for EV battery modules, power electronics, and LED cooling, it cures rapidly at room temperature or accelerated with heat, offering long-term reliability under thermal cycling.
  • dow dowsil se 4485 thermally conductive adhesive_15b6a6da
  • dow dowsil se 4485 thermally conductive adhesive_15b6a6da

Features Of Dow DOWSIL SE 4485 Thermally Conductive Adhesive

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

  2. Low modulus silicone formulation provides excellent stress relief and long-term reliability under thermal cycling.

  3. Room-temperature cure with optional heat acceleration—enabling flexible manufacturing integration.

  4. Electrically insulating properties prevent short circuits while maintaining robust thermal performance.

  5. Thixotropic paste consistency ensures precise dispensing and minimal slump during application.

Typical Applications Of Dow DOWSIL SE 4485 Thermally Conductive Adhesive

  1. Thermal interface material (TIM) for power modules and IGBT substrates in electric vehicles and inverters.

  2. Bonding and heat transfer between LED packages and metal-core printed circuit boards (MCPCBs).

  3. Attachment of heat sinks to semiconductor devices, including MOSFETs and SiC/GaN power components.

  4. Die attach and thermal management in industrial power supplies and renewable energy converters.

Specifications Of Dow DOWSIL SE 4485 Thermally Conductive Adhesive

Chemical TypePlatinum-cured addition-cure silicone
Product FormThixotropic paste
AppearanceGray, homogeneous paste
Primary ApplicationsThermal interface bonding, heat sink attachment, power electronics encapsulation
Key FeaturesThermally conductive, electrically insulating, low modulus, room-temperature curable
BenefitsReduces thermal resistance, accommodates CTE mismatch, enhances long-term reliability
Cure MechanismPlatinum-catalyzed hydrosilylation (addition cure)
Storage ConditionStore at 5–25°C; protect from moisture and direct sunlight


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