Parylene is a that is deposited onto printed circuit boards (PCBs) as a gas in a vacuum chamber. The international symbol for Parylene as a conformal coating is XY. Parylene is a dry process compared to the standard “wet” liquid
Nexus, the independent conformal coating information site, recently completed some research on a new method of LED coating that could potentially offer amazing performance at a low cost. Everyone knows that coating LEDs to improve their reliability is big business.
For conformal coating there are two types of standards used. These are: Material manufacture Production process There are International, National, National Trade Bodies and internal company standards for both material manufacture and conformal coating processing and inspection. More information on
I am regularly asked how thick should the conformal coating be? After all, the performance of the coating is dependent on the coating thickness applied. Well, the simple answer is thick enough so the conformal coating works and protects the
1. Parylene is a trade name for an organic polymer, generically known as Poly (p-xylylene). 2. The Parylene film is created via Chemical Vapor Deposition (CVD) process. This involves the vaporization and subsequent pyrolysis of a dimer (raw unprocessed coating)
Hydrophobic Properties – A fluoropolymer nano coating is generally hydrophobic in nature. It repels water when the water is on the surface of the coating. It will not wet the surface. A normal conformal coating like an acrylic or polyurethane
The Polyurethane (urethane) lacquer is part of the organic family of conformal coatings. The urethanes are normally used for providing chemical resistance to the circuit board. as well as providing good humidity & moisture protection, and generally higher dielectric properties.
Acrylic conformal coatings are one of the most popular types of protective lacquers in the world. Their properties include having excellent humidity resistance and great particulate protection. They also offer extremely competitive pricing and easy ability to be applied. It