NEXUS FEATURE: Ask the Experts – What Challenges do subcontract coating services have when working with OEMs

One of the trickiest jobs is a take a PCB and conformal coat it. For a coating house this could be a board they haven’t even made. What issues arise that the subcontractors see that may help users of coating services get a better service? Experts from a variety of conformal coating services and houses around the world share their knowledge on issues that arise with them.
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Nexus Newsletter Feature So you are considering outsourcing your conformal coating to a subcontract coating house.

Subcontracting out your conformal coating process to a third party can be a great solution or a complete disaster. Nexus have written a detailed article on all the points that should be considered before you take that step and outsource your conformal coating process.  Check out the feature and ensure you don’t make a critical error.

Nexus Newsletter looks at Conformal Coating Subcontract Services and houses

In this issue Nexus reviews subcontract conformal coating services provided by coating houses and the problems faced today. If you want to subcontract out then read this article. Nexus is also looking closer at conformal coating defects related to the IPC Standards and why they occur? The technical article Who Do Defects Occur? gives some insight into how to solve most of the main issues that can stop the line and cause a lot of heartache.

Also, we are introducing a new section at Nexus this month called Conformal Coating101. This section answers all the questions about why we use coating, what it does etc and answers many of the questions we are regularly asked.

Finally, Nexus starts its Conformal Coating Workshop Program off in October and November in China and India, respectively and we confirm further dates for North America and Europe in the New Year.

Click Nexus Conformal Coating Newsletter to access the full details.

Ask The Expert: Dr Lee Hitchens, Nexus on Key Conformal Coating Material Challenges

“Out of all the Key Material Challenges I see on a regular basis, one of the most prolific is difficulties in adhesion to solder resist or to no clean residues and contaminants.“
 “It can be as basic as the coating just will not stick to the PCB or it runs away from areas on the PCB. At other times, it’s interpreting just how well the coating is stuck and determining if it’s good enough for the customer? Normally, this cannot be answered instantly and leads to some serious thinking!”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating material challenges.

Ask The Expert: Karl Hardcastle, SCH Services Ltd, Subcontract Conformal Coating Service on Key Conformal Coating Material Challenges

“One of the biggest issues we face is availability of the materials. As a subcontract coating house we generally have to use the coating selected by the customer. This can have dramatic issues occasionally when lead times on products can stretch into weeks or months and the customer wants the product now!”
“Conformal coating is one of the last processes on the PCB. Coating houses are normally making up the time lost in other areas. If you can plan the production to coincide with the material supply chain it’s a great help!”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating material challenges.

Ask The Expert: Karl Hardcastle, SCH Services Ltd, Subcontract Conformal Coating Service on Key Conformal Coating Inspection Challenges

“One of the interesting points is not all conformal coating defects and problems show up under UV light. You really need to inspect your PCB under white light and UV light to check for different defects. What can look like a perfect coating under UV can cosmetically look awful under normal daylight!”

“Also, you cannot tell how good coating adhesion is with visual inspection only. We examine the PCB as a coating service and if it looks good that’s fine. but without testing we cannot tell how well the conformal coating has adhered.”

Visit the Nexus Associate Experts Section and read what other experts have to say about conformal coating inspection.

Nexus Conformal Coating Newsletter in September

The next Nexus Newsletter will be published in the middle of September. Covered within the issue will be articles including:

Main Feature – Subcontract Conformal Coating Services – A necessary evil or the ideal solution.

Technical Article – So you are considering outsourcing – What does that really cost?

Ask the Experts – Users and suppliers of subcontract service explain their viewpoint on challenges found in contract coating.

Got a Viewpoint on Conformal Coating Service to add to the Newsletter?

Contact Nexus and be part of the solution.