Applications

SILTRUST™ ECC3050S – Fast-curing silicone conformal coating for protecting electronic printed circuit board assemblies

  • Item Name: SILTRUST™ ECC3050S

  • Manufacturer: Momentive Performance Materials

  • Technologies: Low viscosity, solventless silicone conformal coating

  • Color: Translucent

  • Cure Type: Moisture cure / room temperature or low-temperature oven cure

  • Package Size: Contact to Techniq VN for details.

  • Shelf Life: Contact to Techniq VN for details.

1. Product Overview

SILTRUST™ ECC3050S is a low-viscosity, solventless silicone conformal coating that cures rapidly at room temperature to form a soft, transparent silicone rubber. It can also be cured using a low-temperature oven process, making it suitable for high-volume PCB assembly production with temperature-sensitive components. The coating provides excellent long-term moisture protection and minimizes stress on sensitive components due to its low modulus.


2. Key Features and Benefits

  • Fast curing: Ready to handle in minutes

  • Solventless formulation: Safer and environmentally friendly

  • Low viscosity: Suitable for spray or flow coating applications

  • Excellent adhesion: Long-term protection against moisture

  • Low stress: Reduces CTE-induced stress on components

  • Flame retardant: UL94 V-0 recognized (File No. E135148)

3. Typical Physical Properties

Property Unit Value
Uncured Properties
Viscosity (23°C) mPa·s 550
Tack-Free Time (23°C, 50% RH) min 5
Cure Time (23°C, 50% RH) min 30
Cure Time (60°C, 15% RH) min 2
Cured Properties (3 days @ 23°C, 50% RH)
Appearance Translucent
Specific Gravity (23°C) 0.98
Hardness (Type A) 22
Volume Resistivity MΩ·cm 1 × 10⁷
Dielectric Strength kV/mm 20
Dielectric Loss (60 Hz) 0.001
Dielectric Constant (60 Hz) 2.60
Low Molecular Siloxane (D4–D10) wt % 0.01

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