Dow 3-6655 Thermally ConDuctive Encapsulant Datasheet Dow 3-6655 Thermally ConDuctive Encapsulant

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  • Description for Dow 3-6655 Thermally ConDuctive Encapsulant

    Two-part; low viscosity; soft; excellent thermal conductivity.

    Note: This material has been discontinued. Please view the Manufacturer's Recommended Replacement tab or call us at (262) 293-7970 for additional help.

    *See Terms of Use Below

    Chemical Resistance Good
    Application Type Pot, Encapsulate
    1 Part or 2 Part 2 Part
    Material Form Liquid, Silicone elastomer
    Industry Electronic, Sensors, High voltage transformers, Heat sinks
    Manufacturer Dow
    Chemistry Silicone elastomer
    Cure Method 2 Parts
    Cure Temperature (°C) 20 to 25, 100, 125, 150
    Viscosity (cPs) Low, 33,000, Flowable
    Color Gray
    Ozone Resistance Ozone resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Key Specifications UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL 94 V-0

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C
100°C Time to 90 percent of final hardness and adhesion or 90 percent of curve height for elastic modulus additional time may be required for the part to warm to near oven temperature.
125°C Time to 90 percent of final hardness and adhesion or 90 percent of curve height for elastic modulus
150°C additional time may be required for the part to warm to near oven temperature.
Cure Time Test Methods
Cure Time Test Method
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
60 min Time to double initial mixed viscosity 25°C
Dielectric Constant Test Methods
Dielectric Constant Test Method
5.20 Dielectric constant, 100 Hz
5.20 Dielectric constant, 100 KHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00100 Dissipation factor, 100 Hz
<0.00010 Dissipation factor, 100 KHz
Thermal Conductivity Test Methods
Thermal Conductivity Temperature
Excellent 25°C
1.80 W/m°K