Acrylic and urethane conformal coating are widely used conformal coatings.
Acrylic conformal coating pcb.
The fifth coating type parylene is applied using a unique vapor phase polymerization process.
Today we are going to discuss conformal coating pcb its benefits types and methods that might be helpful for you.
Afa optically clear acrylic conformal coating ideally suited for use as an led coating or in other commercial applications to protect the pcb from the environment.
Conformal coating material is a thin polymeric film which conforms to the contours of a printed circuit board to protect the board s components.
Acrylic resins ar are preformed acrylic polymers that are dissolved in a solvent and used to coat a pcb surface.
These coatings can be brushed on sprayed on or the circuit boards can be dipped in the coating.
Conformal coatings can be made from acrylic silicone or urethane resins as well as other more application specific compounds such as epoxy depending on the needs of the circuit board.
This is the most used conformal coating for pcbs.
The coating acts as both a protective shield and insulative material for a pcb.
While they share the same methods of applications and ultimate end item uses there are some differences that should be addressed prior to deciding what conformal coating is the best for your project.
Different conformal coating types such as acrylic conformal coating urethane conformal coating and silicone conformal coatings are frequently used in conjunction with different conformal coating systems to apply the coatings in a quick easy manner for larger scale production.
Its primary purpose is to protect electronics from environmental elements and corrosion.
There are five types conformal coating.
What generally distinguishes acrylic coating from other resins is ease of removal.
Typically applied at 25 250 μm micrometers thickness it is applied to electronic circuitry to protect against moisture dust chemicals and temperature extremes.
Afa boasts superb properties maintaining excellent clarity with minimal colour temperature shift after prolonged uv exposure making it a superb choice for an led coating application.
Benefits of conformal coating.
Acrylic coatings are easily and quickly removed by a variety of solvents often without the need of agitation.
The acrylic conformal coating is applied by using a hand brush sprayed or dipping the board in an acrylic resin coating.
Types of conformal coatings.
Coatings can be applied in a number of ways including brushing spraying.
Four of the five acrylic epoxy polyurethane and silicone are applied by either brushing spraying or dipping the coating on the substrate then letting it dry.
