Dow Dowsil 3-4207 Dielectric Tough Gel

Dow Dowsil 3-4207 Dielectric Tough Gel Datasheet
  • Description for Dow Dowsil 3-4207 Dielectric Tough Gel

    Firm or tough, thermal/mechanical shock and vibration damping, primerless chemical adhesion at room temperature (except 3-4237 Dielectric Firm Gel, which requires heat to develop chemical adhesion), excellent dielectric properties, flexible cure schedule, reversion resistant, thick section cure, compatible with automated dispensing equipment, and physical and electrical stability over a wide temperature range.

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    Brand Dowsil
    Application Type Encapsulant, Sealant, Pottant
    1 Part or 2 Part 2 Part
    Material Form Gel (Post-cure), Liquid (Pre-cure)
    Industry Circuits, Lighting: LEDs, Electronics, Optoelectronics
    Manufacturer Dow
    Chemistry Silicone, Solvent-free
    Cure Method Part A/Part B
    Cure Temperature (°C) 20 to 25 Room Temperature, 25, 50, 75, 100
    Cure Time (min) Fast, 90, 10, 5.00, 3.00
    Viscosity (cPs) Low
    Fluorescent UV indicator allows for automated inspection
    Color Translucent green, Translucent green
    High Temperature Resistance (°C) 200
    Low Temperature Resistance (°C) -45, -55
    Light Refractive Index (RI) High
    Key Specifications UL (Underwriters Laboratory), ULC (Underwriters Laboratories of Canada), NFPA (National Fire Protection Association): UL 94: UL 94 V-1
  • Technical Data

    Overview
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    Specifications
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  • Best Practices

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Cure Temperature Test Methods
Cure Temperature Cure Time Test Method
20 to 25°C Room Temperature
25°C
50°C Heat Cure
75°C
100°C Heat Cure
Cure Time Test Methods
Cure Time Test Method
Fast
90 min
10 min Heat Cure
5.00 min
3.00 min Heat Cure
Set Time Test Methods
Set Time Set Temperature
Work / Pot Time Test Methods
Work / Pot Time Test Method Temperature
Peel Strength Test Methods
Peel Strength Test Method
3 (ppi) 180 Degree Peel Strength, Unprimed Adhesion
Dielectric Constant Test Methods
Dielectric Constant Test Method
2.85 Dielectric Constant, 100 Hz
2.86 Dielectric Constant, 100 kHz
Dissipation Factor Test Methods
Dissipation Factor Test Method
0.03000 Dissipation Factor 100 Hz
<0.00010 Dissipation Factor 100 kHz
Shore A Hardness Test Methods
Shore A Hardness Shore Hardness Test Method
9500 g Durometer
Shore OO Hardness Test Methods
Shore OO Hardness Shore Hardness Test Method
59 Durometer
Specific Gravity Test Methods
Specific Gravity Test Method
0.980 Cured or uncured A & B.