What are my options for conformal coating application methods?

This is a question I am asked time and again.

Of course most people know of the selective robot and how it applies conformal coating.

However, there are many different application methods available for both liquid conformal coatings and Parylene and listed below are the common techniques:

Click on each to examine individually for details or click conformal coating application techniques for an overview.

Note, each of the various methods has different strengths and weaknesses.

However, each of these application methods should be considered in relation to the holistic approach to conformal coating processing 

What is the holistic approach to conformal coating?

The holistic approach states that you should consider the conformal coating material, the application process and the circuit board together and not as three separate entities.

I consider this approach the most fundamental issue and crucial factor in all of conformal coating processing.

Ironically, it is ignored on a regular basis.

In fact, I find that the failure to apply the holistic approach at the beginning of the conformal coating selection process is normally the root cause of many conformal coating problems.


Click conformal coating application techniques to find out more.

Need help with your conformal coating process?

Contact Nexus now and let us show you how we can help you.

Dr Lee Hitchens, Author of Nexus website and ebook

Dr Lee Hitchens is the Author of the Nexus eBook and a main contributor to Nexus.


Nexus Series of Webinars: Conformal Coating Application Methods, Materials for Field Reliability

Nexus are to hold a series of webinars on conformal coating topics in the Autumn of 2012.The series of four online conformal coating webinars will cover the following topics and each last 90 min. The second of the online training webinars will be:

Application Methods, Materials for Field Reliability
Monday 10th December

There are different Conformal Coating application methods and materials to coat a board assembly. The product type and its application are the key factors in the decision process but do you have the onsite knowledge? You should also look at the onsite or subcontract services options, depending on the product and the requirements, and it may make sense to contract it out for technical reasons. Assessment of the effectiveness of the selected conformal coating is key to long term reliability but how is this assessed and what are the criteria?

Topics will include:

Service environment and coating selection
Application with dip, spray, vacuum (parylene) & manual methods
Onsite or contract service what are the options?
What are the true cost factors to consider?
Reliability testing of coatings and products

Please click online conformal coating webinars for further information.