DOWSIL™ 3140 RTV Coating is a one-part, solvent-free, room-temperature curing silicone coating designed to protect sensitive electronic components from environmental contaminants, moisture, and mechanical stress. Its flowable, self-leveling nature ensures comprehensive coverage, making it ideal for applications requiring enhanced solder joint protection and thin-section encapsulation.?
Product Overview
Cure Type : Room temperature vulcanizing (RTV), moisture-cure
Viscosity : Approximately 35,950 CP
Tack-Free Time : Approximately 105 minutes at 25°C
Full Cure Time : 24 to 72 hours at room temperature
Operating Temperature Range : -50°C to +200°C
Color : Clear to slightly hazy
Packaging Options : Available in 90 mL tubes, 493 g cans, and 17.6 kg pails?
Key Features
Self-Leveling and Flowable : Ensures uniform coverage over complex geometries
Flame Resistance : Complies with UL 94 V-1 at 1.4 mm thickness
Electrical Insulation:
* Dielectric Strength: 450 V/mil
* Volume Resistivity: 2.1 × 10¹? ohm=cm
Mechanical Properties:
* Tensile Strength: 495 psi
* Elongation at Break: 420%
* Hardness: Shore A 34
Certifications: Meets MIL-A-46146, MIL-I-46058C, and IPC-CC-830 standards
UV Indicator: Facilitates inspection under UV light?
Typical Applications
Conformal Coating : Protects rigid and flexible printed circuit boards from moisture and contaminants
Encapsulation : Suitable for thin-section encapsulation of electronic components
Pin Sealing : Provides enhanced protection for pin and solder joints
Corrosion Protection : Shields corrosion-sensitive components in harsh environments?
Safety and Handling
Ventilation: Use in well-ventilated areas to avoid inhalation of vapors
Personal Protective Equipment: Wear appropriate gloves and eye protection
Storage: Store in a cool, dry place below 30°C in original sealed containers
Shelf Life: 12 months from the date of manufacture when stored properly