LORD- Circalok 6703 Silicone Encapsulant

ID AVLR6703
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LORD Circalok™ 6703 thermally conductive silicone encapsulant is a two-component system designed to provide thermal conductivity for encapsulating densely packed power units. Shelf life of each component is six months from date of manufacture when stored at 25°C in original, unopened container.

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Description

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

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.

  • 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.

Uncured 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

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, MPa: 1.38
Elongation at Break, %: 80
Dielectric Strength, V/mil: 500
Dielectric Constant, @ 25°C: 4.25
Dissipation Factor, % @ 25°C: 0.02

Circalok 6703 A Resin - Typical Properties**

Appearance: Black Paste
Viscosity, cps @ 25°C: 15,000
Specific Gravity: 2.09

Circalok 6703 B Hardener - Typical Properties**

Appearance: White Paste
Viscosity, cps @ 25°C: 6000
Specific Gravity: 1.91


Material Safety Data Sheet (MSDS): Part A || Part B
Technical Data Sheet: Click Here

*Actual product colours may vary from on-screen and printed representations.
**Data is typical and not to be used for specification purposes.
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