Five key facts about ultra-thin, nano- coatings used in electronics protection

  1. Water repelling (hydrophobic) Properties – An ultra-thin coating is normally hydrophobic. This is because it is normally a fluoropolymer technology. The coating does not allow the water to wet on the on the surface of the coating. It modifies the surface and changes its dyne energy. A typical conformal coating like an acrylic or polyurethane is not water repellent and water wets the surface. nano coating
  2. Ultra-thin –Typical coating thickness is 1-2um for a coating (depending on application) compared to the acrylic, urethane and silicone conformal coatings that are applied at >25um.
  3. No masking of connectors required – The circuit board can be completely submerged in the coating liquid with no masking applied. Due to the extremely thin coating applied (<1-2um), the components can be connected together and the electrical connection is easily made. This would not be possible for a standard conformal coating. So, costs of processing are extremely low.
  4. Simple application process – The ultra-thin coating can be applied by dip, brush or spray.  But, the simplest method is dipping. Since there is no masking then the dip process is simple and is an extremely cost effective application method.
  5. Fast drying – Since the coating is ultra-thin and the solvents normally used are fast drying then the fluoropolymer coating dries extremely quickly. The coating can be dry in seconds and ready for use in a few minutes.

Need to find out more?

For further information on the ultra-thin, nano- coatings then contact us directly.

Or, you can go to our free eBook by clicking fluoropolymer coating materials now.

If you are new to Nexus and our work on conformal coatings then a good place to go is our Start Here page.

 

Things you should know about Parylene

What is Parylene?

Parylene is a conformal coating that is deposited as a gas in a vacuum chamber.

It is a completely different process to the liquid conformal coatings and its properties offer advantages and disadvantages in comparison.

Parylene is a dry process compared to the standard “wet” liquid conformal coatings.

Since Parylene is deposited as a gas its thickness is almost uniform across the whole circuit board.

 

The ABCs of Parylene

Parylene is an organic polymer conformal coating that is deposited as a gas in a vacuum chamber.

Therefore, the Parylene application process is a completely different process to the liquid conformal coatings.

This gives Parylene unique properties that are not possible with the typical liquid conformal coatings normally used in electronics protection.

 

Five key facts about Parylene

  1. Parylene is the trade name for a variety of poly(p-xylylene) polymers
  2. It is a conformal coating that is deposited as a gas in a vacuum chamber. This is different to liquid conformal coatings.
  3. The Parylene film is created via a controlled Chemical Vapor Deposition (CVD) process.
  4. It is a dry process compared to the standard “wet” liquid conformal coatings.
  5. This process makes Parylene a highly effective moisture and dielectric barrier that outperforms most liquid conformal coatings.

 

Three important points you should know about Parylene

  1. Parylene has unique properties that are not possible with the liquid conformal coatings.
  2. Parylene is a conformal coating that is deposited as a gas in a vacuum chamber.
  3. This is different to liquid conformal coatings that can be brushed, dipped or sprayed.

Where to start with Nexus and conformal coating

If you are new to Nexus and our work on conformal coatings then a good place to go is our Start Here page.

When people visit our site they go to certain areas. I have tried to indicate these pages directly and help you save some time.

It also tells you a little bit more about why Nexus was written.

What is Nexus?

Nexus is an independent website and eBook dedicated to providing information on all areas of conformal coating and the related topics connected to the process.

This includes Parylene and other deposition processes, fluoropolymer technologies plus the traditional conformal coating materials.

It is made up of a lot of knowledge from many different people from the world of conformal coating that you should find useful.

Why create Nexus?

I have been working in the area of conformal coatings and electronics high reliability for over 25 years in various areas including sales, technical support and training.

A few years ago I decided that people needed a specific place where they could find all of the useful knowledge on conformal coatings and use in their own production process.

So, Nexus was created and I began writing the website.

Why is Nexus independent?

People from all over the conformal coating industry are helping with the quality of the content and helping peer review the information.

This is so the conformal coating knowledge you have from Nexus is as independent as it can ever be and should be able to guide you through most issues without risk of commercial bias.

I hope that you find it the case and the information you find is useful.

Finally, this is a continuous project and I am always looking to improve the content. If you need anything specific then let me know and I will be more than happy to help out.

I hope that you find this the case and that you will find all the knowledge you need on understanding conformal coatings and being successful in their application.

Send me an email at lhitchens@nexus3c.com and let me know what you think?


Dr Lee Hitchens, Author of Nexus website and ebook
Dr Lee Hitchens, Author of Nexus

Dr Lee Hitchens is the author of the Nexus conformal coating website and eBook.

Nexus is an Independent Conformal Coating Resource and Database

Nexus brings together the accumulated knowledge of a group of conformal coating and electronics material dispensing consultants who provide a unique service, focussed on helping electronics manufacturing clients improve their conformal coating and electronics materials processes.

Nexus operate across North America, Europe and Asia and can provide a unique perspective to the rapidly growing conformal coating and electronics materials industry. Expertise is held in liquid and parylene coating, capital equipment sales and specifications and material, equipment and process specification, troubleshooting and training.

One of the founder members of Nexus is Dr Lee Hitchens PhD who has worked within the conformal coating industry for over 18 years. Until recently Dr Hitchens’ work included sales of conformal coating materials and capital robotic equipment in all areas of the world. However, he decided to form Nexus and become independent.

Dr Hitchens sums up Nexus,

“The demands on conformal coatings and the processes that apply them are becoming more and more complex with the exponential growth in electronics. Couple this with the knowledge gap and the lack of time to learn in most companies and you find a very difficult situation for most users.

Nexus is here to bridge the gap. Independent of all material and major capital equipment suppliers, our consultants can offer a unique perspective into conformal coating that users can tap into, as much or as little as needed. We can champion the user but also offer help to the supplier who needs to educate a rapidly growing market across the globe.”

Want to find out more about Nexus? Join us at Nexus3c.com

Conformal Coating Polls – Join in to help understand Global Conformal Coating Processes for the Electronics Industry

Complete the Polls on the Home Page of the Nexus and help Nexus understand what information is required to support companies and the results are published

Nexus3C have launched a monthly conformal coating poll so users of the service can gain insight on key processing issues, trends and markets to help them in the future.

Topics in the near future will include conformal coating rework, parylene versus liquid coating and trends towards environmentally friendly conformal coatings.

Contact Nexus3C to view our conformal coating poll and submit your vote

Sign Up for the Conformal Coating Newsletter from Nexus3C Conformal Coating Database and Resource

Apply for the Nexus3C Newsletter which will be launched free to all companies who sign up to receive a copy. The Newsletter signposts to industry events, exhibtions, new suppliers, products, training opportunities and any area that aids users of conformal coatings to improve their process.

Contact Nexus3C to receive your Free Conformal Coating Newsletter from Nexus3C Conformal Coating Database and Resource

Hello world!

Welcome to the new Nexus3C blog.

Nexus3C combines the expertise of a uniquely qualified group of conformal coating and electronics material dispensing consultants focused on helping electronics manufacturing clients improve their conformal coating processes.

Nexus3C is the perfect Conformal Coating & Dispensed Materials Consultancy partner, offering complete solutions in an extensive range of Conformal Coating & Dispensing industry areas including process optimisation and control, benchmarking, coating & dispensing equipment and material selection, troubleshooting and technical support.

Contact Nexus3c for further information.