Protective coating for electronic device components

Novec electronic grade coatings have been proven effective against corrosion through extensive testing, as seen in these images showing untreated and treated circuitry that has been exposed to salt fog. They act as an excellent circuit board protective coating, providing a uniform oleophobic and hydrophobic layer that helps cover surfaces of a component for exceptional repellency of moisture, oils, dirt, grime, fingerprints and other environmental contaminants. Novec coatings help provide excellent protection and resistance against corrosive agents that devices might encounter, including:
 

• Moisture
• Water
• Salt fog or mist
• Sulfur

Ultra-thin Novec coatings can be alternatives to traditional conformal coatings and a smart choice for your business. In a dip application, thicknesses can range from 0.1 to 1.3 microns, or 1 to 6 microns. In a typical single-pass spray, thicknesses range from 1 to 6 microns; layers can be built up to create appropriate thicknesses. This compares to up to 25 microns or more for typical conformal coatings. Thinness has several advantages, including:
 

• Electrical contact can be made through the coating, eliminating the need for masking
• Excellent coverage of complex geometries
• Thermal management properties — the thinner coating doesn’t trap as much heat

3M Novec Electronic Grade Coatings can save costs and increase efficiency without compromising performance.
 

• Compatible with existing spray, dip, or syringe application processes and equipment
• Simple spray application means less need for specialised labour and equipment
• Easy application that is dry to the touch in seconds, and most don't require curing
• May eliminate masking, saving time and steps
• Reworkable to help improve production yields
• Build up the protection needed with multiple layers
• Some products feature UV-detectable dye to simplify inspection

Performance without compromise means choosing products that don’t put workers or the environment at risk. Novec electronic grade coatings are formulated with 3M™ Novec™ Engineered Fluids, which offer: 
 

• Non-flammability and low toxicity for improved worker safety
• Non-conductivity
• Low environmental impact, with zero ozone depletion potential (ODP) and low global warming potential (GWP), compared with conventional coatings formulated with hydrocarbon solvents
• Exemption from the U.S. EPA definitions for volatile organic compounds (VOCs)
• Strong regulatory compliance — not scheduled for restriction or phasedown