A NEW family of high-performance fluorochemistries customized to meet the toughest challenges from Thin Film Partners

thinfilmpartners-logo low resThin Film Partners LLC have launched a complete range of high-performance fluorochemistries designed for glass and plastic.

Ultra-thin OPX features superior protection is ideal for display screens on cell phones and tablets. The fluoropolymer keeps your display free of smudges and fingerprints.

Even better, it offers unequaled protection from the wear and tear of every day use.

Chemically bonded to the surface, OPX forms a clear, scratch resistant barrier that can withstand the worst abrasion, even thousands of rubs with steel wool.

Find out more here about Thin film Partners 

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What is mealing in conformal coating processing?

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Mealing is delamination under the conformal coating that causes a blister

Mealing is a form of delamination of the conformal coating that occurs across the circuit board.

It is a blistering (vesication) affect.

There are several causes for mealing that are similar to de-lamination.

These include:

  • Cleanliness
  • Material Compatibility
  • Permeability to moisture of the coating
  • Degree of coating cure

Click to find out more about how you can prevent the mealing defect in conformal coating.

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What are Atomic Layer Deposition Coatings?

test-tubes low resAtomic Layer Deposition (ALD) belongs to the family of chemical vapor deposition methods (CVD).

It is a deposition process of a coating at a nano-scale level within a vacuum chamber.

The deposition process forms ultra-thin films (atomic layers) of coating with extremely reliable film thickness control.

This provides for highly conformal and dense films at extremely thin layers (1-100nm).

ALD is used in many different areas including:

  • Micro-electronics
  • Semiconductors
  • Photovoltaics
  • Biotechnology
  • biomedical
  • LEDs
  • Optics
  • Fuel cell systems

Find out more here by clicking what is atomic layer deposition?

Need help with your process?

Contact us at Nexus and we can help solve your issues.

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Conformal coating inspection is the key to success in production

Circuit board inspection of conformal coating is the most critical process in the complete production line.

Get this wrong and the reliability of the board can be significantly effected.

Inspection should be carried out on completion of the coating process. However, it is often a neglected stage of the conformal coating production line.

Conformal coating inspection reduced size
Conformal coating inspection is often a neglected stage of the conformal coating production line

 

 

The International standards such as IPC A 610 and IPC CC 830 are explicit in their requirements for conformal coating inspection. Yet, few companies actually inspect to the required level or indeed understand what is required.

Click to find out more about the conformal coating standards and also how you can improve your conformal coating inspection process.

Need help with your process?

Contact us at Nexus and we can help solve your issues.

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What is layering in conformal coating and is it a problem for the protection of the circuit board?

Layering is where multiple coats of material are applied to a circuit board and they do not adhere to each other or cause incorrect curing of the individual layers.

This can lead to a weakened performance in the conformal coating, which in turn can lead to the failure of the circuit board.

There are several causes of layering in conformal coating. These include incorrect adhesion, curing and keying of the coatings.

Click conformal coating layering to find out more and how to prevent this problem.

Need help with your process?

Contact us at Nexus and we can help solve your issues.

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Why hybrid processing of traditional conformal coatings and fluoropolymer, nanocoatings could improve your reliability

Traditional conformal coatings protect the circuit well if they are selected correctly. However, where the coating is not applied there is little or no protection.

Nano coatings (FC), ultra thin coatings of thickness <2μm, provide hydrophobic properties and don’t need masking.

The lack of need for masking is due to the coating thickness being so thin that there is no resistance to removing the material. This means the FC can coat all of the circuit including connectors and offer the protection of the coating.

However, this very fact means the FC coating is delicate to handle and may not provide the long term reliability needed like a traditional coating.

So, what if we could combine the two materials and have the properties of both?

The circuit board would have:

  • The long term protection due the traditional conformal coating
  • The hydrophobic nature due to the FC coating
  • Protection all across the circuit board

Nexus have been experimenting wth dual coating with both traditional conformal coatings and ultra-thin coatings.

water repelled from a connector due to FC coating square crop
A circuit board with both conformal coating and a fluoropolymer (FC) coating applied. The FC material in the connector repels the water droplet that would normally capillary into the component.

The results are extremely interesting for potentially increasing the protection of the circuit without adding a significant amount of cost to the process.

To find out more read the Nexus Article The Rise of the Hybrid Conformal Coating to find out.

Need help with your process?

Contact us at Nexus and we can help solve your issues.

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How can a conformal coating audit help your process?

help Guides  low resAnalysing your conformal coating production process, whether its a conformal coating line or a Parylene batch system, can create huge benefits due to improvements made in the production performance.

Using our expert knowledge and experience from Nexus, we can examine your individual production processes and examine your output for your coating line.

This can save you money, time, and improve quality, depending on your needs.

A typical audit would include:

  • A site visit to audit your conformal coating facilities and processes surrounding the conformal coating area.
  • Discussions with staff members regarding the conformal coating processes, understanding their needs for production, the requirements for the product to be protected by the conformal coating and any other issues such as commercial or health & safety restraints
  • Analysis of the conformal coating process findings with recommendations for further improvements delivered in a report for future reference

We would work with you to understand your requirements an priorities. We can then tailor the system to fit your needs, whilst employing the best knowledge available for your field of production.

Let us help you and audit your conformal coating process line.

Contact us at Nexus and we can help solve your issues.

Subscribe to the Nexus Newsletter now.