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Anchor-Electronics has been supplying Silicon Valley's engineers, students and hobbyists for over 35 years...
Silicone Conformal Coating
Protective coatings are necessary to ensure a long and effective working life of electrical and electronic components. Ideal for high temperature environments, Silicone Conformal coating is a thin flexible finish product that provides a protective coating for printed circuit boards against moisture, corrosion, and thermal shock. It protects and insulates electrical and electronic components and assemblies, including generators, motors, transformers, relays, and solenoid coils. For spraying, liquid can be thinned using M.G. Thinner Cleaner. Thin up to one half part thinner to one part coating. Also available in a micro tip pen format.
Availability: In-Stock
Silicone Spray 12 oz.: $19.25
Green Overcoat Pen 0.16 oz.: $8.95
Directions for Use
Spray an even coat with a minimum application of .048 grams per square centimeter. Application measurements can be achieved by first weighing the can, then spraying an even coat, then reweighing the can. Knowing the dimensions of your board, one can calculate as to whether your application is within certified limits. This method will give you maximum surface area coverage of 7080 cm2 (7.6 ft2).
Best results will be obtained by applying to thoroughly cleaned and dried parts or materials. It is essential that surfaces be free of any trace of grease or organic substances.
At room temperature, the product will tack free in approximately 30 minutes, and full cure will be achieved in approximately 48 hours. Curing may be accelerated by applying moderate heat with either a convection oven or infrared lamps. We recommend curing in a convection oven at 65°C (149°F) for one hour, but other temperature and time combinations can work well. Heat curing will improve the physical strength of this coating.
Specs
| Standards | |
| CSA tested | (file # L0 4000-4068) |
| UL Recognized | (file # E203094) |
| Meets UL 94 | Flame Class, 94V-0 |
| Properties | |
| Color | Clear |
| Service temperature range | -40°C to 200°C (-40°F to 350°F) |
| Specific gravity of liquid | 0.96 |
| Liquid viscosity | 14.4 cps |
| Solvents | xylene, acetone |
| Percent solids by weight | 25% (liquid); 15% (aerosol) |
| Tack free time | 5-7 minutes at 22°C |
| Full cure | 48 hrs. @ 20°C (68°F) 60 min. @ 65°C (149°F) |
| Hardness | 75 Shore D |
| Dielectric Properties | |
| Dielectric strength | 80 kV/mm (2000 V/mil) |
| Dielectric constant @ 100MHz | 2.7 |
| Loss angle tangent @ 100 MHz | 0.001 |
| Volume resistivity, Ohm * cm | 1 x 10^14 |
| Dielectric withstanding voltage @ 1,500 VDC for 1 min (IPC-TM-650) | Pass |
Orville's 2 Bits
Heat and dust have always been the silent killers of electronic circuits. But an often overlooked factor is water vapor that can lead to corrosion.As your products get smaller, more portable, and are shipped to a wide range of climates, your circuit will need to be kept clean and protected from changes in humidity.
Our spray on coating from M.G. Chemicals will seal your design in an envelope of silicon resin. It will protect against dirt, corrosion, and will offer better electrical isolation for surface-mount or high-density boards.