August 13, 2026 Protecting printed circuit boards (PCBs) from severe operating environments, extreme temperatures, and mechanical vibration is essential for industrial electronics. Fine-L-Kote High Viscosity SR 2102-HV (Product# 2102-HV) offers a flexible, high-viscosity silicone coating designed for robust physical and dielectric circuit protection.
What is Fine-L-Kote High Viscosity SR 2102-HV?
Fine-L-Kote High Viscosity SR 2102-HV is a premium silicone conformal coating manufactured by Techspray. Universal in its protective capabilities, this formulation forms a tough, flexible barrier that shields sensitive electronics against moisture, chemical exposure, and thermal shock up to operating temperatures of 392°F (200°C).
Key Features and Benefits of Fine-L-Kote High Viscosity SR 2102-HV
- High Thermal Stability: Withstands continuous operating temperatures up to 392°F (200°C).
- Superior Dielectric Strength: Delivers an impressive 1100 volts/mil dielectric insulation rating.
- Flexible & Vibration Resistant: Absorbs mechanical stress and thermal expansion to protect delicate solder joints and components.
- Environmental Protection: Highly resistant to moisture, humidity, and corrosive industrial chemicals.
- Certified Industry Compliance: UL Recognized (File #E475454), UL94 V-0 flammability rated, and compliant with IPC-CC-830B standards.
- Eco-Friendly: Non-ozone depleting solvent chemistry.
Target Applications
Due to its high viscosity and flexible silicone formulation, this protective coating is suited for demanding production workflows, including:
- Automotive & Aerospace Systems: High-heat under-hood electronics and flight control units.
- Industrial Machinery: Heavy-duty motor controls and instrumentation subjected to continuous vibration.
- Outdoor Power Displays: Power supplies and circuitry exposed to harsh weather and moisture.
Application Guidelines
1. Surface Cleaning
Prior to application, thoroughly clean circuit boards to remove flux residues and contaminants using Techspray G3, E-LINE™, or Precision-V defluxers. Ensure the surface is completely dry before applying the coating.
2. Application Techniques
- Spray Application: Apply top to bottom, allowing material to flow evenly around components. Rotate the board 90º and repeat. Apply four passes in total, allowing curing between coats if additional thickness is required.
- Dip Application: Slowly immerse the PCB into the coating and withdraw at an average rate of 1 foot per minute using hand immersion or automatic dipping equipment.
- Brush Application: Evenly apply coating to targeted areas at the desired thickness, allowing proper cure time before re-applying. Use WonderMASK to protect masked components.
3. Rework & Removal
If repair or component replacement is necessary, cured coating can be removed using the Techspray Conformal Coating Removal Pen (2510-N or 2510-P).
Technical Specifications
| Property | Specification |
|---|---|
| Product Name / Part Number | Fine-L-Kote™ High Viscosity SR Silicone / 2102-HV |
| Physical State | Liquid |
| Color / Appearance | Colorless to light yellow |
| Maximum Operating Temperature | 392°F (200°C) |
| Dielectric Strength | 1100 volts/mil |
| Relative Density | 0.83 |
| Flash Point (Closed Cup) | 39.9°F (4.4°C) |
| Boiling Point | 174.2°F (79°C) |
| Volatility | 86% (w/w) |
| Certifications & Ratings | UL Recognized (#E475454), UL94 V-0, IPC-CC-830B |
| Shelf Life | 1 Year from manufacturing date |
Conclusion & Support
For high-temperature resistance, vibration damping, and all-around PCB protection, Fine-L-Kote High Viscosity SR 2102-HV provides an exceptional industrial solution. For technical assistance, safety data sheets (MSDS), or purchasing inquiries, please visit Contact – LORIOT INDUSTRIAL to reach our specialist team.
