Selecting the proper conformal coating type requires a knowledge in not only conformal coatings but the specific assemblies, and environments they will reside in. Summit Technologies has over 30 years of professional experience with conformal coatings, and will work closely with you to select the proper type of coating for your project should you need.
We have the ability to apply coatings through automation, spraying, dipping, brushing, and dispensing in order to facilitate all of our customers specifications.
While there are numerous conformal coating types that Summit Technologies, Inc. has the ability to utilize and work with the most common coatings applied are listed below.
ACRYLIC CONFORMAL COATINGS
(AR)- Acrylic: Acrylics are fungus resistant, fast curing and emit little to no heat. They also do not exhibit shrinkage. They offer the highest humidity resistance of all. They have a relatively high dielectric characteristic, fair chemical resistance, and good temperature resistance. They can be quickly reworked during rework with stripping solvents or by soldering directly through them for spot repairs making them the easiest conformal coatings to handle.
SILICONE CONFORMAL COATINGS
(SR)-Silicone: Silicone coatings offer high temperature (200° C), moisture and dielectric resistance. They are a semi-permeable media. A very low surface tensions aids in their ability to penetrate into parts of an assembly. Silicones flexibility allows for a much thicker build up and can be removed and reworked.
EPOXY CONFORMAL COATINGS
(ER)-Epoxy: Epoxy coatings provide excellent abrasion resistance, chemical resistance but poor moisture and dielectric performance. Usually a two part thermosetting coating that is very difficult to remove.
URETHANE CONFORMAL COATINGS
(UR)- Polyurethane or Urethane: (commonly shortened to Urethane)-offer excellent chemical resistance combined with temperature and dielectric characteristics. These are hard durable coatings their high level of chemical resistance however can be a major drawback since their rework can prove difficult and costly.
UV LIGHT CURED CONFORMAL COATINGS
(UV)-UV Light Cure: UV coating permits curing of material is seconds. A catalyst is often required to ensure a cure in shaded areas. These coating typically are not a solvent based and are a high solid content. Removal of this material can be difficult, usually requiring mechanical or chemical means of removal.
While these are the most common coatings, the industry is ever changing and Summit Technologies makes it a priority to stay on the cutting edge of technology in order to best serve our customers specialized coating needs.