Conformal coatings play an integral part for the PCB assembly as it serves to protect the circuit boards from the harsh environment, electrical insulation, thermal and electrical resistance the entire circuitry life. Conformal coatings are proven to be effective in protecting circuit boards used in the Automotive Electronics, Aerospace & Military Electronics, Shipboard & Marine Electronics, Solar & Energy Electronics, Mobile Consumer Electronics, Medical Electronics and Outdoor Electronics

The typical chemistry base for conformal coatings: 

• Acrylic
• Silicone
• Polyurethane
• UV Acrylic
• Epoxy.

More recently, AI Technology introduces two new types of conformal coatings that are qualified under the IPC-CC-830C standards of testing and meet the Mil-Std requirements of MIL-I-46058.

The key difference in these new types of conformal coatings is the ability to block moisture and corrosive gases while being hydrophobic for unparalleled conformal circuit protection.

• Ultra-Hydrophobic (Repels Water Completely)
• Super Non-Hygroscopic (Does Not Absorb or Retain Moisture)
• Moisture Blocking

Both types of conformal coatings can be applied with standard spray-dip-brush methods and air dry at ambient temperature for the thickness of 15-50 microns and “Parylene-type” performance.

Today’s advanced outdoor electronics may be exposed to high humidity, salt-fog and salt-spray, temperature variance or even thermal shock, and the industrial atmosphere is laden with corrosive gases like sulfur dioxide, hydrogen sulfide, nitrogen dioxide, etc. Millimeter frequency devices, like those used with 5G, feature fine-pitch components and leads separated by smaller, ever closing distance, creating a greater need for the prevention of ionic migration.