Dow Dowsil 1-4105 Conformal Coating

Dow Dowsil 1-4105 Conformal Coating Datasheet
  • Description for Dow Dowsil 1-4105 Conformal Coating

    One-part, heat cure, transparent low viscosity conformal coating suitable for use as a protective coating for rigid and flexible circuit boards, no added solvents.

    *See Terms of Use Below

    Brand Dowsil
    Application Type Conformal Coat
    1 Part or 2 Part 1 Part
    Material Form Liquid, Silicone elastomer
    Industry Electronic Printed Wiring Board (PWB), Advanced driver-assistance systems (ADAS), E-Mobility Solutions, Smart Meters, Insulation, Smart Home Devices, Headlamp assemblies, Protective coating for Flexible circuit boards, Protective coating for Rigid circuit boards
    Manufacturer Dow
    Chemistry Silicone elastomer, No added solvent
    Application Method Flow: Flow coating
    Cure Method Heat Cure
    Cure Temperature (°C) 105
    Cure Time (min) Faster, 10
    Viscosity (cPs) Low, 450
    Color Clear, Transparent
    Ozone Resistance Ozone resistance
    Chemical Resistance Good
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Stress Relief Low stress
    Key Specifications IPC (Association Connecting Electronics Industries): IPC-CC-830, UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL V-1 flammability rating, Mil-Spec (United States Military Standard): Mil-I-46058C, UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL746E
  • Technical Data for Dow Dowsil 1-4105 Conformal Coating

    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1 Part or 2 Part - 1 Part
    • Material Form
      • Elastomer - Silicone elastomer
      • Liquid
    • Substrate
      • Other - Common materials, Common substrates, No-lead solder, Many low-solids
    • Industry
      • Advanced driver-assistance systems (ADAS)
      • E-Mobility Solutions
      • Headlamp - Headlamp assemblies
      • Electronics - Electronic Printed Wiring Board (PWB), Protective coating for Flexible circuit boards, Protective coating for Rigid circuit boards
      • Smart Meters
      • Smart Home Devices
      • Insulation
      • Other - Fill in narrow spaces, Fill in narrow gaps
    • Chemistry
    • Application Method
      • Dispenser - Robotic dispensing, Select coating
      • Brush
      • Spray
      • Flow: Flow Coat - Flow coating
      • Dip
      • Screen Print - Automated pattern
    • Cure Method
      • Heat - Heat Cure
    • Color
      • Clear / Transparent - Clear, Transparent
    • Key Specifications
      • IPC (Association Connecting Electronics Industries): CC-830 - IPC-CC-830
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: V-1 - UL V-1 flammability rating
      • Mil-Spec (United States Military Standard): I-46058-C - Mil-I-46058C
      • UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): 746E - UL746E
    • Brand
      • Dowsil
    Specifications
    Cure Specs
    Cure Temperature (°C) 105 Test Method
    Cure Time (min) Faster, 10 Test Method
    Viscosity (cPs) Low, 450 Test Method
    Bond Strength
    Tensile Strength (psi) 35
    Material Resistance
    Ozone Resistance Ozone resistance
    Chemical Resistance Good
    UV Resistance UV resistance
    Environmental Resistance Environmental resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Moisture/Humidity Resistance Moisture/humidity resistance
    Conductivity
    Dissipation Factor 0.00070, <0.00020 Test Method
    Dielectric Strength (V/mil) 500 Test Method
    Dielectric Constant 2.63, 2.63 Test Method
    Volume Resistivity (O) 2.7E+13 (ohm*cm)
    Hardness
    Stress Relief Low stress
    Elongation (%) 70
    Shore OO Hardness 64 Test Method
    Flexibility Soft, Flexible
    Modulus (psi) 50 Test Method
    Other Properties
    Specific Gravity 0.970 Test Method
    Coefficient of Thermal Expansion (CTE) 325 (ppm/ºC) Test Method
    Business Information
    Shelf Life Details Dow Corning Heat Cure Conformal Coatings should also be stored at or below 25°C (77°F). Containers should be kept tightly closed and kept in cold storage at all times to extend shelf life.;Storage conditions and shelf life (“Use by” date) are indicated on the product label., Dow Corning Heat Cure Conformal Coatings should also be stored at or below 25°C (77°F). Containers should be kept tightly closed and kept in cold storage at all times to extend shelf life.;Storage conditions and shelf life (“Use by” date) are indicated on the product label.
    Shelf Life Temperature (°F) 77, 50
    Shelf Life Type From date of manufacture, From date of manufacture
    Shelf Life (mon) 2, 6
  • Best Practices for Dow Dowsil 1-4105 Conformal Coating

    *See Terms of Use Below

    1. Curing

      Time to cure is dependent on film thickness, type of oven, and board population density. Heat cure time in the Typical Properties table gives an indication of typical times after the coating is heated to the temperature indicated. Highly populated, large, heavy boards may take longer than the indicated times due to the large thermal mass taking extra time to warm.

    2. Testing

      If a substrate or material is questionable with respect to potentially causing inhibition of cure, it is ecommended that a simple small scale compatibility test be run to ascertain suitability in a given application. The presence of liquid or uncured product after the recommended cure cycle at the interface between the questionable substrate and the cured gel indicates incompatibility and inhibition of cure.

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    *See Terms of Use Below

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
105°C These values are not intended for use in preparing specifications.
Cure Time Test Methods
Cure Time Test Method
Faster
10 min These values are not intended for use in preparing specifications.
Viscosity Test Methods
Viscosity Test Method
Low
450 cPs These values are not intended for use in preparing specifications.
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.63 At 100 Hz, These values are not intended for use in preparing specifications.
2.63 At 100 kHz, These values are not intended for use in preparing specifications.
Dielectric Strength Test Methods
Dielectric Strength Test Method
500 V/mil These values are not intended for use in preparing specifications.
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.00070 At 100 kHz, These values are not intended for use in preparing specifications.
<0.00020 At 100 hz, These values are not intended for use in preparing specifications.
Shore OO Hardness Test Methods
Shore OO Hardness Shore Hardness Test Method
64 These values are not intended for use in preparing specifications.
Modulus Test Methods
Modulus Test Method
50 psi Tensile Modulus
Specific Gravity Test Methods
Specific Gravity Test Method
0.970 Cured, These values are not intended for use in preparing specifications.
Coefficient of Thermal Expansion (CTE) Test Methods
Coefficient of Thermal Expansion (CTE) CTE Test Method
325 (ppm/ºC) Linear,By TMA, These values are not intended for use in preparing specifications.