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Silicones and Electronics
Long-term, reliable protection of sensitive circuits and components has become increasingly more important in many delicate and demanding electronic applications. Silicones function over a wide temperature and humidity range as durable dielectric insulation, as barriers against environmental contaminants and as stress-relieving shock and vibration absorbers. In addition to sustaining their physical and electrical properties over a broad range of operating conditions, silicones are resistant to ozone and ultraviolet degradation and have good chemical stability. Most Dow Corning silicones contain significantly less solvent than organic coatings and are available in a wide variety of cure systems.

Conformal Coatings
Conformal coatings are materials applied in thin layers (typically a few mils or microns) onto printed circuits or other electronic substrates. They provide environmental and mechanical protection to significantly extend the life of the components and circuitry. Conformal coatings are traditionally applied by dipping, spraying or simple flow coating, and increasingly by select coating or robotic dispensing. Conformal coatings protect electronic printed circuit boards from moisture and contaminants, preventing short circuits and corrosion of conductors and solder joints. They also minimize dendritic growth and the electromigration of metal between conductors. In addition, the use of conformal coatings protects circuits and components from abrasion and solvents. Stress relief is also provided, as is protection of the insulation resistance of the circuit board. Dow Corning coatings are particularly useful for protecting circuitry in severe-service environments, while maintaining a low-stress environment for components and connections. These severe environments range from everyday temperature and humidity extremes seen in consumer electronics to the more harsh automotive under-hood environment, up to the extreme conditions demanded in military or industrial applications. The coatings are supplied in a variety of forms that can be cured at room temperature or accelerated by heat, adaptable to your processing needs. Most conformal coatings contain a UV indicator enabling blacklight visualization of the coating.

Dow Corning® Conformal Coatings are supplied in three product families:
  • Solventless RTV elastomeric conformal coatings require atmospheric moisture to cure. This family of coatings is rapidly gaining popularity due to its environmentally friendly and solventless formulations, its rapid cure rates that can be dramatically accelerated by mildheat, and its cost effectiveness. These elastomers, when cured, offer the optimum stress relief for components and interconnections in a variety of service environments.
  • Solventless heat cure conformal coatings are designed for rapid processing at moderate temps (above 100 °C). They require some heating to cure, offering long bath life at room temperature. Like the room-temperature-curing elastomers, these products offer optimum stress relief for components and interconnections in a variety of service environments. This product line also features coatings that are manufactured for controlled volatility.
  • RTV elastoplastic conformal coatings have firm, dry surfaces for better handling and abrasion resistance after cure. They require atmospheric moisture to cure and their cure rates can be accelerated by mild heat. They are supplied in solvent, with low-VOC versions available.
1 - 19 of 19 | Results Per Page | View | Unit of Measure
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Item #

Type

Product Form

Color

Viscosity

Durometer

Room Temperature Tack-Free Time

3-1953 Conformal Coating N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 350 mPa/s N/A 16 A N/A 8 min
3-1965 Conformal Coating N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 125 mPa/s N/A 29 A N/A 7 min
3-1944 Conformal Coating N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 65725 mPa/s N/A 29 A N/A 16 min
3140 RTV Coating N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 35950 mPa/s N/A 34 A N/A 105 min
HC 1000 N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Gray N/A 12000 mPa/s N/A 24 A N/A 11 min
HC 1100 N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Gray N/A 2375 mPa/s N/A 22 A N/A 9 min
HC 2000 N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 130 mPa/s N/A 25 A N/A 15 min
HC 2100 N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 400 mPa/s N/A 10 A N/A 10 min
SE 9157 N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 5675 mPa/s N/A 25 A N/A 6 min
SE 9186 L N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Black Translucent N/A 26900 mPa/s N/A 24 A N/A 8 min
SE 9187 L N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Black Translucent White N/A 1100 mPa/s N/A 17 A N/A 9 min
SE 9189 L RTV N/A Solventless RTV Elastomeric Conformal Coatings N/A 1-part RTV cure N/A Gray White N/A 23300 mPa/s N/A 33 A N/A 8 min
CC-4555 Long Bath Life Conformal Coating N/A Solventless Heat Cure Conformal Coatings N/A 1-part heat cure N/A Translucent N/A 225 mPa/s N/A 22 A N/A
Q1-4010 Conformal Coating N/A Solventless Heat Cure Conformal Coatings N/A 1-part heat cure N/A Translucent N/A 825 mPa/s N/A 33 A N/A
1-4105 Conformal Coating N/A Solventless Heat Cure Conformal Coatings N/A 1-part heat cure N/A Translucent N/A 470 mPa/s N/A 65 OO N/A
1-2577 RTV Coating N/A RTV Elastoplastic Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 950 mPa/s N/A 20 D N/A 7 min
1-2577 Low VOC RTV Coating N/A RTV Elastoplastic Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 1050 mPa/s N/A 25 D N/A 6 min
1-2620 RTV Coating N/A RTV Elastoplastic Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 150 mPa/s N/A 25 D N/A 5 min
1-2620 Low VOC RTV Coating N/A RTV Elastoplastic Conformal Coatings N/A 1-part RTV cure N/A Translucent N/A 350 mPa/s N/A 25 D N/A 5 min
1 - 19 of 19 | Results Per Page | View | Unit of Measure
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