This paper describes how we have used this test vehicle to evaluate Conformal Coating materials, compare application equipment along with providing site enablement and optimization methods for the conversion to high reliability/minimized cost Conformal Coating processes.

Seven assembly process variables were investigated. The three most critical variables were identified and their impacts will be discussed. Practical manufacturing techniques that maximize production "Return on Invested Capital" ROIC will also be discussed. IPC-CC-830[1] and ASTM D3359[2] standards were used to execute the test plan.

Key words: Conformal Coating, Optimization Methods, Process Yields, Return on Invested Capital (ROIC)">

Pan Pacific Symposium Conference Proceedings


EVALUATING THE MANUFACTURABILITY AND OPERATIONAL COSTS FOR NEW CONFORMAL COATING PROCESSES

Authors: Jason Keeping, P. Eng.
Company: Celestica Inc.
Date Published: 1/24/2008   Conference: Pan Pacific Symposium


Abstract: There are test vehicles to address SMT assembly process development and optimization, but none to address Conformal Coating operations. To fill this gap, Celestica has designed the "CC-Tango" test vehicle. The continued migration in the electronics industry to higher density components and smaller footprint layouts makes the Conformal Coating process more challenging in terms of achieving acceptable first pass process yields and cycle times that are cost effective. The "CC-Tango" test vehicle can be used to assess the assembly processes for cleaning, masking and inspection/rework requirements and their effect on Conformal Coating applications. These are some of the main features that require further investigation for manufacturability optimization. This information is critical for Aerospace, Military, Industrial customers and any other products that may be exposed to harsh environmental conditions with either lead free or mixed conditions requiring Conformal Coating.

This paper describes how we have used this test vehicle to evaluate Conformal Coating materials, compare application equipment along with providing site enablement and optimization methods for the conversion to high reliability/minimized cost Conformal Coating processes.

Seven assembly process variables were investigated. The three most critical variables were identified and their impacts will be discussed. Practical manufacturing techniques that maximize production "Return on Invested Capital" ROIC will also be discussed. IPC-CC-830[1] and ASTM D3359[2] standards were used to execute the test plan.

Key words: Conformal Coating, Optimization Methods, Process Yields, Return on Invested Capital (ROIC)



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