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The science behind thin film Nano-coatings in protecting electronic circuit boards from harsh environments

Nano-coatings are being used all the time to protect electronic circuit board assemblies.

This is because the base materials they are formulated from are fluorinated polymers that have very different properties to traditional conformal coatings.

So, how are the Nano-coatings different to conformal coatings?

To understand the properties of a Nano-coating you have to understand what a fluoropolymer coating is made of.

How was the new Molecular Vapor Deposition (MVD) technology developed for protecting electronic circuit boards?

The Molecular Vapor Deposition (MVD®) process was found in 2003 by the SPTS MVD group located in San Jose, California.

SPTS provided Nano-film technology processing, equipment and coating services, supplying to multiple markets including:

Five key facts about Parylene for protecting electronic circuit boards

Parylene is a high performance coating used to protect electronic circuit boards against environmental attack.

It is an organic polymer thin film that is created via a controlled Chemical Vapor Deposition (CVD) process.

This involves the vaporization and subsequent pyrolysis of a feedstock (dimer), resulting in the formation of a monomer that is then polymerized in a vacuum chamber (at low pressure and at room temperature).

What sectors are acrylic conformal coatings used in protecting electronic circuit boards?

Acrylic conformal coatings are used in protecting circuit boards in every sector of the modern world.

Historically, they are the oldest material to be used as a conformal coating and the acrylic resin continues to dominate for the time being.

There are many reasons why the acrylic conformal coating is the most popular.

These reasons include:

Why use masking boots in a conformal coating process?

Custom masking boots can provide protection for many different types of components on a circuit board from ingress of coatings.

In fact, they can form an integral part of a full masking solution in all of the conformal coating application techniques including batch and selective robotic spraying (as an alternative to difficult technical programming), vertical and horizontal dipping and chemical vapour deposition (CVD) processes such as Parylene and atomic layer deposition (ALD).

Ten reasons to use Molecular Vapor Deposition (MVD) in protecting electronic circuit boards

Molecular Vapor Deposition (MVD) is a new coating from Thin Film Partners that uses a hybrid coating process of alternating layers of ALD (Atomic Layer Deposition)  and CVD (Chemical Vapor Deposition) films combined with a hydrophobic final top coat.

The MVD method uses multiple alternate layers of these ultra-thin coatings with differing properties to build a completely protective coating.

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