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The Effect of Coating and Potting on the Reliability of QFN Devices.

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SMTnet Express, August 28, 2014, Subscribers: 23150, Members: Companies: 14012, Users: 36727

Technical Library

The Effect of Coating and Potting on the Reliability of QFN Devices.

Greg Caswell, Cheryl Tulkoff; DfR Solutions.

The fastest growing package types in the electronics industry today are Bottom Termination Components (BTCs). While the advantages of BTCs are well documented, they pose significant reliability challenges to users. One of the most common drivers for reliability failures is the inappropriate adoption of new technologies. This is especially true for new component packaging like BTCs. Obtaining relevant information can be difficult since information is often segmented and the focus is on design opportunities not on reliability risks (...)

Commonly used conformal coating and potting processes have resulted in shortened fatigue life under thermal cycling conditions. Why do conformal coating and potting reduce fatigue life? This paper details work undertaken to understand the mechanisms underlying this reduction. Verification and determination of mechanical properties of some common materials are performed and highlighted. Recommendations for material selection and housing design are also given.

read article »

Forum search results for related keywords: QFN, BTC, conformal coating, potting.

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King of Prussia, PA, USA | September 11 | DDM Novastar - Our Open House will feature hands-on equipment demonstrations...

Cleaning Before Conformal Coating - Online Webinar

Online | September 18 | ZESTRON Corporation - An overview of potential failure mechanisms resulting from coating over residues....

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Zero returns due to coating issues

Selective Conformal Coating System - GPD SimpleCoat