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

Dow DOWSIL SE 4450 Thermally Conductive Adhesive

Dow DOWSIL SE 4450 is a thermally conductive silicone adhesive offering rapid room-temperature cure high bond strength and excellent thermal management for electronics assembly. Part of Dow’s DOWSIL SE series it delivers reliable adhesion to metals plastics and ceramics while maintaining flexibility and long-term stability under thermal cycling.
  • dow dowsil se 4450 thermally conductive adhesive_ae137de1
  • dow dowsil se 4450 thermally conductive adhesive_ae137de1

Features Of Dow DOWSIL SE 4450 Thermally Conductive Adhesive

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

  2. Two-part, addition-cure silicone formulation enabling low mixing ratio (1:1 by volume) and extended working life.

  3. Excellent adhesion to metals, ceramics, and engineered plastics without primer.

  4. UL 94 V-0 rated for flame resistance, supporting safety compliance in power electronics.

  5. Low modulus and high flexibility after cure to accommodate thermal cycling and mechanical stress.

Typical Applications Of Dow DOWSIL SE 4450 Thermally Conductive Adhesive

  1. Thermal bonding of IGBT modules and power semiconductor devices to heatsinks.

  2. Die-attach and heat-spreader attachment in electric vehicle (EV) inverters and onboard chargers.

  3. Attachment of LED packages and driver components in high-brightness lighting systems.

  4. Thermal interface bonding in 5G base station power amplifiers and RF modules.

Specifications Of Dow DOWSIL SE 4450 Thermally Conductive Adhesive

Chemical TypeTwo-part addition-cure silicone
Product FormPaste (Part A and Part B supplied separately)
AppearanceGray, homogeneous paste
Primary ApplicationsThermally conductive structural bonding and die attach
Key FeaturesHigh thermal conductivity, low modulus, UL 94 V-0 rating, 1:1 mix ratio
BenefitsReduces thermal resistance, mitigates delamination under thermal cycling, simplifies dispensing
Cure Schedule15–30 min at 150°C (full cure); room-temperature tack-free in 30–60 min
Storage Stability12 months at ≤25°C (unopened)


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