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CoolTherm® SC-104 Thermally Conductive Silicone Encapsulant Where to Buy

Product Information

LORD CoolTherm® SC-104 thermally conductive encapsulant is a two-component system designed to provide excellent thermal conductivity for electrical/electronic encapsulating applications, while retaining desirable properties associated with silicones. CoolTherm SC-104 encapsulant can be either room temperature cured or heat cured for maximum adhesion.

Shelf Life

Shelf life of each component is nine months 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.

CoolTherm SC-104 hardener evolves minute quantities of hydrogen gas. Do not repackage or store material in unvented containers. Adequately ventilate work area to prevent the accumulation of gas.

Features and Benefits

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

Durable – composed of an addition-curing polydimethyl siloxane polymer that will not depolymerize when heated in confined spaces.

Low Viscosity – maintains low viscosity for ease of component encapsulation compared to other highly thermally conductive materials.

Environmentally Resistant – provides excellent thermal shock resistance.

UL Rated – provides excellent flame retardancy; UL 94 V-0 certified.

Uncured Typical Properties*

Mixed Appearance Gray Liquid
Mixed Viscosity, cP @ 25°C 7000
Mixed Specific Gravity 2.10
Gel Time, min @ 25°C 60
Working Life, min @ 25°C 50
Cure Time 24 hr @ 25°C; or
25-30 min @ 70°C; or
10-15 min at 100°C

Cured Typical Properties*

Thermal Conductivity, W/m·K 0.8
Coefficient of Linear Thermal Expansion, ppm/°C 160
Hardness, Shore A 65
Tensile Strength, MPa (psi) 3.3 (480)
Elongation at Break, % 45
Moisture Absorption, % 0.1
Volume Resistivity, ohm-cm @ 25°C 2.2 x 1015
Dielectric Strength, kV/mm (V/mil) 17.3 (440)
Dielectric Constant, @ 25°C 3.06
Dissipation Factor, @ 25°C 0.0075

*Data is typical and not to be used for specification purposes.
Cure schedule of 16 hours at 25°C plus 2 hours at 100°C.


Download Type Name
Download Safety Data Sheet COOLTHERM SC-104 RESIN
Download Safety Data Sheet COOLTHERM SC-104 HARDENER
Download Technical Data Sheet CoolTherm SC-104 Thermally Conductive Silicone Encapsulant
Download Product Catalog Potting & Encapsulation Materials
Download Filled Addition-Curing Silicone Encapsulant Handling/Application Notes

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