What standards can the SCH Technologies Conformal Coating AOI systems inspect to?

The systems have a variety of software options right up to inspecting TRUE IPC Class III standards. The reason we state true standards is that most people are not inspecting to this level even though they think they are. This is due to two reasons:

  1. It is very difficult to inspect to IPC Class III standards as it is under magnification, is time-consuming and challenging for operators.
  2. Also, it is very difficult generally for customers to produce conformal coating finish to this level without creating lots of defects.

The key to all inspection, manual or automatic, is to decide what you are looking for.

The surface energy of the substrate is lower than the conformal coating

The surface energy of the substrate is lower than the conformal coating

So, what type of conformal coating defects are you looking for? Are you looking for bubbles?Are you looking for foreign bodies? Or is it just coating in the right place and coating not in connectors? These questions are related to the inspection criteria you desire and it is very important to define exactly what are you actually looking for.


The software we use can measure all of these factors. The key is to understand whether your production process can stand up to the level of inspection/interrogation that the machine will provide?

Click For further information on Conformal Coating AOI Systems from SCH Technologies.

Or, contact us here at +44 1226 249019 or email sales@schservices.com


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About Dr Lee Hitchens

Dr Hitchens has been working in the electronics industry and the area of conformal coatings for over 25 years in various areas including sales and technical support. He has also been training people for almost the same amount of time in all areas of conformal coating whether that is materials & equipment selection, process development or troubleshooting to help them solve their particular problem. Recently, he decided that the industry needed a specific place where all of the useful knowledge on conformal coatings could be collated for users to find easily and use in their own production process. So, Nexus was born and he began the Nexus eBook project.

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