Dow Dowsil CC-3122 Conformal Coating Datasheet Dow Dowsil CC-3122 Conformal Coating

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  • Description for Dow Dowsil CC-3122 Conformal Coating

    One-part, translucent, low viscosity, room-temperature-vulcanization (RTV).

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    Brand Dowsil
    Application Type Conformal Coating
    1 Part or 2 Part 1-Part
    Material Form Liquid
    Industry Rigid circuit boards, Advanced driver-assistance systems (ADAS), E-Mobility Solutions, Headlamp assemblies, Electronic Printed Wiring Boards (PWB), Sensitive components, Most delicate components, Interconnections
    Manufacturer Dow
    Chemistry Polydimethylsiloxane, No added solvents
    Cure Method RTV, Atmospheric moisture, Heat (optional)
    Viscosity (cPs) Low, 80
    Fluorescent UV indicator for inspection
    Color Translucent
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -40
    Volume Resistivity (O) 2.3e16 (Ohm* cm)

  • Technical Data for Dow Dowsil CC-3122 Conformal Coating

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    Overview
    • Application Type
    • 1 Part or 2 Part
      • 1-Part
    • Material Form
      • Liquid
    • Industry
      • Advanced driver-assistance systems (ADAS)
      • E-Mobility Solutions
      • Headlamp - Headlamp assemblies
      • Electronics - Sensitive components, Electronic Printed Wiring Boards (PWB), Rigid circuit boards, Interconnections, Most delicate components
      • Other - Fine pitch design
    • Chemistry
    • Application Method
      • Brush - Brush flow
      • Spray - Automated spraying coating
      • Dip - Dip coating
    • Cure Method
      • Moisture / Condensation Cure - Atmospheric moisture
      • Heat - Heat (optional)
      • RTV (Room Temperature Vulcanization) - RTV
    • Color
      • Translucent
    • Brand
      • Dowsil
    Specifications
    Cure Specs
    Viscosity (cPs) Low, 80 Test Method
    Tack Free Time (min) 6 Test Method
    Fluorescent UV indicator for inspection
    Work / Pot Time (min) The pot life of DOWSIL™ RTV conformal coatings is dependent on the application method chosen. To extend pot life, minimize exposure to ambient moisture by using dry air or dry nitrogen blanketing whenever possible.
    Material Resistance
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -40
    Conductivity
    Dielectric Strength (V/mil) 32 (kV/mm) Test Method
    Volume Resistivity (O) 2.3e16 (Ohm* cm) Test Method
    Hardness
    Shore A Hardness 75 Test Method
    Other Properties
    Specific Gravity 1.030 Test Method
    Business Information
    Shelf Life (mon) Shelf life is indicated by the “Use Before” date found on the product label.

  • Best Practices for Dow Dowsil CC-3122 Conformal Coating

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    1. Surface Preparation

      It is recommended that the coatings be applied to clean and dry substrates prior to application. On certain difficult, low-surface energy surfaces, adhesion may be improved by priming or by special surface treatment such as chemical or plasma etching.

    2. Curing

      Time to cure is dependent on several variables including the method of application, film thickness, temperature and humidity. Cure time for full cure are indications of time needed to develop full physical properties such as durometer, tensile strength or adhesion. These times, including full cure time, can be significantly improved by introducing mild heat of 60°C (140ºF) or less.

  • Comparable Materials for Dow Dowsil CC-3122 Conformal Coating

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Tack Free Time Test Methods
Tack Free Time Tack Free Temperature Test Method
6 min 25°C Skin-over time, CTM 0098, 50% RH for 7 days
Viscosity Test Methods
Viscosity Test Method
Low
80 cPs CTM 0050
Dielectric Strength Test Methods
Dielectric Strength Test Method
32 (kV/mm) CTM 0114, Tested after cured at 25°C *50% RH for 7 days.
Volume Resistivity Test Methods
Volume Resistivity Test Method
2.3e16 (Ohm* cm) CTM 0249, Tested after cured at 25°C *50% RH for 7 days.
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
75 CTM 0099, Tested after cured at 25°C *50% RH for 7 days.
Specific Gravity Test Methods
Specific Gravity Test Method
1.030 CTM 0022, cured