how to find defects in smt electronics manufacturing

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www.creativeelectron.com LED, BGA, and QFN Assembly and Inspection Defect Inspection Examples Copyright © 2014 Creative Electron NOT FOR DISTRIBUTION

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Page 1: How to find defects in SMT electronics manufacturing

www.creativeelectron.com

LED, BGA, and QFN Assembly and Inspection

Defect Inspection Examples

Copyright © 2014 Creative ElectronNOT FOR DISTRIBUTION

Page 2: How to find defects in SMT electronics manufacturing

www.creativeelectron.com

Where Are Defects Introduced?

Counterfeit*Components

Page 3: How to find defects in SMT electronics manufacturing

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Defects associated with paste applicationExcess solderSolder bridgesInsufficient solder

Solder Paste Application Defects

Page 4: How to find defects in SMT electronics manufacturing

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Component Placement Defects

Defects associated with component placementMisalignmentPolarityMissing component

Page 5: How to find defects in SMT electronics manufacturing

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Reflow Oven Defects

Defects associated with the reflow profileVoidingBridgingSolder ballsExcess solderInsufficient solder

Page 6: How to find defects in SMT electronics manufacturing

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Statistical Process Control

Manufacturing process quality assurance.Solder joint measurement data, collected during x-ray test, can be statistically analyzed to identify manufacturing drifts, trends and other relevant process quality issues.

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BGA Head In Pillow Visual Inspection

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