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CoolTherm™ SC-6703 Thermally Conductive Silicone Encapsulant Where to Buy

Product Information

LORD CoolTherm™ SC-6703 thermally conductive silicone encapsulant is a two-component system designed to provide thermal conductivity for encapsulating densely packed power units.

Shelf Life

Shelf life of each component is six months from date of manufacture when stored at 25°C in original, unopened container. The material must be periodically rotated within its container to maintain maximum shelf life. Settling will occur if not mixed.

Features and Benefits

Low Stress – exhibits low shrinkage and stress on components as it cures.

Environmentally Resistant – provides excellent thermal shock resistance.

UL Rated – meets requirements of UL 94 V-O standard; provides excellent flame retardancy.

Typical Properties*

Mixed Appearance Light Gray Paste
Mixed Viscosity, cps @ 25°C 8000
Mixed Specific Gravity 2.0
Gel Time, min @ 66°C 12 - 14
Working Life, hr @ 25°C 1 - 2
Cure Time, hr @ 65°C 4

Cured Typical Properties*

Volume Resistivity, ohm-cm @ 25°C 1 x 1014
Thermal Conductivity, W/mK 0.8
Coefficient of Linear Thermal Expansion, ppm/°C 220
Hardness, Shore A 60
Tensile Strength, psi 200
Elongation at Break, % 80
Dielectric Strength, V/mil 500
Dielectric Constant, @ 25°C 4.25
Dissipation Factor, % @ 25°C 0.02

*Data is typical and not to be used for specification purposes.
Cure schedule of 1-2 hours at 65°C.


Download Type Name
Download Technical Data Sheet CoolTherm SC-6703 Thermally Conductive Silicone Encapsulant
Download Filled Addition-Curing Silicone Encapsulant Handling/Application Notes