Fine-L-Kote SR Silicone Conformal Coating

• UL recognized (UL746E) - file #E475454
• Thermal resistance - 392°F (200°C)
• Dielectric strength - 1100 volts/mil
• Moisture resistant
• Chemically resistant
• Vibration resistant & flexible
• IPC-CC-830B qualified

Surface to be sprayed should be thoroughly cleaned with solvent such as Flux Remover G3® (1631). Surface must be completely dry before application of coating. Shake can well. Hold the board to be coated in a horizontal position and spray from top to bottom, holding the can four to six inches from surface. First, apply a light topical coating, then, after board has been fully coated, immediately apply a second heavier coat. Allow material to flow around the components. After application, invert can and spray until no liquid is expelled. Coating will be tack free in approximately 1 hour; however, full cure requires 72 hours depending upon humidity. Coated boards can be reworked by applying soldering iron directly to coating. Coated boards can be reworked by applying soldering iron directly to coating, or complete removal can be achieved in 1 to 3 hours by using Conformal Coating Remover (2510). Removal time depends upon temperature, thickness of coating, and application.
Application method considerations:
Dip – High volume method to fully coat boards. Thickness of final coating is controlled by viscosity and withdrawal speed from the pot. Selective spray system – Computer controlled selective spray systems, eliminate the need for masking. Higher viscosity than full coverage sprayer is generally needed (70-200 cps) to create precise edge definition and prevent splattering.
Manual Application – Aerosol and brushing are generally used for small production runs, rework and repair. If using for rework, the aerosol needs to be compatible with the original coating.