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Silicone Conformal Coatings | MS-460H

Silicone Conformal Coatings | MS-460H

Miller-Stephenson’s Silicone Conformal Coating is a transparent, soft, flexible coating which offers excellent moisture resistance, good dielectric properties, and excellent light transmission capabilities for solar applications.  It has good weatherability and resistance to U.V. light and dirt pick-up.  This coating can be “solder-through” for easy repair. Contains Dow Corning 1-2577 silicone resin. This silicone resin meets the requirements of MIL-I-46058C, Type SR, IPC-CC-830B and  UL 746E approva. It is also compatible with WEEE and RoHS.

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Silicone Conformal Coatings | MS-460H

Transparent, Flexible, Robust Coatings – MIL-SPEC approved

Miller-Stephenson Silicone Conformal Coatings ( MS-460H ) is a transparent, soft, flexible MIL-SPEC coating which offers excellent moisture resistance, good dielectric properties, and excellent light transmission capabilities for solar applications.  It has good weatherability and resistance to U.V. light and dirt pick-up.  This coating can be “solder-through” for easy repair. Contains Dow Corning 1-2577 silicone resin. This silicone resin meets the requirements of MIL-I-46058C, Type SR, IPC-CC-830B and  UL 746E approval. It is also compatible with WEEE and RoHS.

Printed circuit boards (PCBs) form the foundation for electronics in automotive, consumer electronics, communications and industrial and energy applications. Yet these PCBs are often exposed to damaging environmental factors, ranging from moisture, dust and harsh chemicals to extreme thermal cycling and vibration.

Formulated from tough but flexible silicone technology, Miller-Stephenson’s MS-460H Silicone Conformal Coatings promote extended service life and enhanced reliability for your PCB components and assemblies. Our industry-leading solutions have delivered proven protection for decades against moisture, service environment and a variety of harsh operating conditions includinga wide range of temperatures – from -45°C to 200°C. An additional benefit of silicone conformal coating is its excellent moisture protection.  Silicones have been used in cases where there were extreme temperature differences, which resulted in excessive moisture.  Other conformal coatings failed within hours or days, while silicone, especially when applied thickly, has been proven to succeed.  One particular application was for electronically controlled heaters developed for artic temperatures.

Silicone Conformal Coatings Performance

After cure, Miller-Stephenson’s Silicone Conformal Coatings deliver dependable, long-lasting protection. Their natural elasticity also helps minimize mechanical or thermal stress on delicate component leads. Additional select grades deliver tougher, more abrasion resistant coatings ideally suited for electronic printed wiring board applications.

For help in choosing the correct conformal coating for your application see our article section

More than a world-class materials supplier, Miller-Stephenson is an expert and dedicated collaborator. If our product finder cannot identify an off-the-shelf solution that meets your precise specifications or if you are looking for application expertise and support please contact us.

The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.

Cure Electrical Properties

Dielectric Strength (volts/mil)400
Dielectric Constant (10Hz )2.74
Dissipation Factor 10^5 Hz<0.0002
Volume Resistivity (ohm/cm)5×10^13

Cure Physical Properties

Operating Temperature94 V-00
UL Flammability Classification240
Tensile Strength (psi) @ 77F/25C74
Elongation (%) @ 77F/25C80
Durometer Hardness, Shore A, Points2.1 x 10^-4
Coefficient of Thermal Expansion2.0 x 10^-4
Water Absorption
100 hrs. @ 77oF/25oC0.11%
100 hrs. @ 221F/105C & 98%RH0.33%

The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.

MS-460H

MS-460H TDS

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Silicone Conformal Coating dries in approximately one hour and completely cures within 72 hours after coating.  A good cure for a working environment requires 24 hours at 77oF/25oC and 50% relative humidity.  Higher humidity and temperature will result in a faster cure.  The coating can be cured in 30 minutes at 168oF/75oC or in 15 minutes at 302oF/150oC in an air circulating oven.

The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.

14 oz Aerosol

The recommendation made here with and the information set forth with respect to the performance or use of our products are believed, but not warranted to be accurate. The products discussed are sold without warranty, as to fitness or performance, express or implied and upon condition that purchasers shall make their own test to determine suitability of such products for their particular purposes. Likewise, statements concerning the possible uses of our products are not intended as recommendations to use our products in the infringement of any patent.