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Protective Coatings for Printed Circuit Boards


Easy to apply, nonflammable surface modifiers - alternatives to conformal coatings

Consumer demand for electronic devices that are more compact, portable and loaded with features has made protecting sensitive electronic components against soils, contaminants and moisture more challenging than ever before.

Now, 3M brings you a family of fast drying, easy-to-apply, protective electronic coatings for printed circuit boards and other electronic components – all designed to maintain optimal performance and reliability in a broad range of environments and applications.

3M™ Novec™ Electronic Grade Coatings provide

  • Excellent protection and repellency properties
  • Improved manufacturing efficiencies
  • Health and safety benefits
  • Environmental and sustainability benefits

Figure 1: Closeup of water drops beading up on a circuit board protected with 3M Novec Electronic Grade Coating

These nonflammable surface modifiers offer you a reliable alternative to traditional conformal coatings – combining outstanding performance with easy application.

Features and Benefits

  • Excellent repellency – reduces the component surface energy, repelling moisture and many liquids
  • Protects - thermally and electrically stable, with excellent dielectric properties
  • Thin - provides protection by drying to a one micron thick, clear, uniform protective film
  • Speed of application - air-dries in seconds, minimizes masking, thermally cures quickly
  • Ease of application - can be applied via dip, spray*, brush or syringe dispensing
  • Sustainable – made with sustainable chemistries, they are non ozone-depleting, contain no volatile organic components and have low global warming potential
  • Health and safety – are nonflammable and low in toxicity

  • *Use of appropriate PPE or engineering controls recommended.
 

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3M™ Novec™ Electronic Grade Coatings
Product Selection Guide for Internal Component Protection

Application
Area

Novec Coating

Solids
(%)

Solvent

Recommended
Application Method1

Dry Time
Cure Time

PCB Moisture Protection

ACF Connection Protection

Anti-Migration

Removable

UV Detectable

Internal Protection

Designed to protect printed circuit boards, solder alloys, components, metals, composites
1700 2 3M™ Novec™ 7100 Engineered Fluid Dip 5-30 seconds
No cure is required
 
1702 0.2 Dip
1710 10 Dip
1901 1 3M™ Novec™ 7100 and 7200 Engineered Fluids Blend Spray 5-30 seconds
No cure is required
 
1902 2 Spray
1904 4 Spray
1908 8 Dip
27002 0.2 3M™ Novec™ 7200 Engineered Fluid2 Syringe 5-30 seconds
No cure is required
2701 1 Spray
2704 4 Spray
2708 8 Dip
2702 2 3M™ Novec™ 7200 Engineered Fluid Spray 30-90 seconds
Cure at 70-150°C for 15-60 minutes
     
1 All Novec coatings can be applied using spray, dip or syringe methods. For spray application, 3M recommends using engineered controls or PPE to minimize worker exposure.
2 Contains < 5% by weight PGMEA, a VOC. See SDS for specific product information.