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Viscom delivers system for coating inspection

Posted: 10 Mar 2015 ?? ?Print Version ?Bookmark and Share

Keywords:Conformal coating?

Viscom unveiled its S3088 system for Conformal Coating Inspection (CCI), which inspects coatings for defects such as cracks, defective areas, layers that are too thin or too thick, smearing, impurities, or splashes.

Transparent conformal coatings protect electronics assemblies against moisture and wetness. With Viscom's S3088, electronic assemblies can be inspected from both an orthogonal view and angled view. The system also features plasma coating inspection as well as an optional wet inspection for defective areas.

The new inspection system for conformal coatings has been an integral part of the Viscom product family since 2013. It works with UV LEDs, which strongly contrast the UV-reactive conformal coating against the background material, clearly detecting the contours of the lacquer. With a resolution of 11.7?m/px or 23.5?m/px, even the smallest defective areas, impurities or splashes are clearly visible. These are then either classified as defects, or used as valuable indicators to further improve the coating process.

Viscom's angled view enables the S3088 CCI to reliably inspect the spaces between the components for defects, in addition to offering orthogonal inspection. Furthermore, a wet inspection facilitates optical inspection before the conformal coating has cured. This way, defects can be recognised during an early production stage.

Viscom CCI

The S3088 CCI also is available with a new high-precision plasma inspection feature. For plasma coatings, polymers in the nanometre range are vapour-deposited in sheer layers within a vacuum chamber with under pressure. With this, Viscom can now inspect weakly fluorescing plasma coatings with reliability.

With its versatile algorithms, the system can be quickly adapted to different conformal coatings. Simple inspection programmes can be created in only a few minutes. The Viscom S3088 CCI ensures that electronics manufacturers fully comply with the IPC-CC-830 directive for qualification and performance of electrical insulating compounds for printed circuit boards.

This system works with the Viscom SI inspection software and offers the same user and programming interface as other inspection systems from the Viscom portfolio. Thus, traceability concepts and special inspections such as reading labels with a data matrix code (DMC) can be realised. The S3088 CCI also can be easily integrated into Manufacturing Execution Systems (MES).

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