Acrylic conformal coatings, such as MG Chemicals 419C and Humiseal 1B31 are a very popular conformal coating choice. They are used primarily for moisture protection on printed circuit boards. Often times, they are the cheapest conformal coating to apply because of their easy to use nature. As a result of this, people try to apply acrylic conformal coating as a DIY project. An issue that arises frequently is an improper thickness of coating, resulting in lackluster protection.
Parylene Coating Blog by Diamond-MT
Type AR (acrylic resin) conformal coatings are a popular choice for conformal coating projects because of their moisture protection, low cost, and ease of application. There are many different varieties of type AR conformal coatings such as: