Root Cause Failure Analysis of Printed Circuit Board ... - SMTA

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DFX PCA Test Software Systems Mentor -Valor Valor Computerized Computerized Systems Systems • Mentor (Enterprise 3000, Trilogy 5000) Mentor – Router Solutions • Mentor (CAMCAD) • Siemens Siemens UGS UGS - Technomatix Technomatix (Test Expert) • Teradyne Teradyne (D2B Alchemist, D2B Strategist) • Digitaltest Digitaltest (C-Link) • Agilent Agilent (Access Consultant) • Aster Aster Technology Technology (Testway)
DFX Mechanical Software Systems Analysis Analysis Software Software Software • Boothroyd Boothroyd Boothroyd and and Dewhurst Dewhurst (DFMA) • Geometric Geometric Ltd. Ltd. (DFMPro) • Galorath Galorath (SEER) Design Design Software Software • PTC PTC (Pro/Engineer) • Autodesk Autodesk (AutoCAD) Dessault Dessault • Dessault (Solidworks , Catia, Delmia) • Siemens Siemens (NX - SDRC)
Page 1 and 2:
Root Root Root Cause Cause Failure
Page 3 and 4:
Today’s Electronic Designs • Co
Page 5 and 6:
Component Issues - Warpage • High
Page 7 and 8: Component Issues - Decreasing Pitch
Page 9 and 10: LGA Pad Design Solder Solder Mask M
Page 11 and 12: % PAD SIZE INCREASE 60 50 40 30 20
Page 13 and 14: Component Pad - Thermal Imbalance
Page 15 and 16: Thick Copper Design A A CTE CTE Mis
Page 17 and 18: Thick Copper Design Lack Lack Of Of
Page 19 and 20: Copper Etch Process • H H = = = H
Page 21 and 22: Pad Size Reduction Current Procedur
Page 23 and 24: • Voids in Solder Joints - Unfill
Page 25 and 26: Stencil Tolerances Artwork Artwork
Page 27 and 28: Offset Paste - Normal Placement Pho
Page 29 and 30: Match Placement To Paste • Slight
Page 31 and 32: Solder Paste Printing Volume Air Bu
Page 33 and 34: Internal PCB Impacts Number Of Laye
Page 35 and 36: Wave Solder & Rework Issues 0.005
Page 37 and 38: PCB Finish Vs Solder Spread - OSP -
Page 39 and 40: Defects Caused By Improper Thermal
Page 41 and 42: Through Hole Pad Design • Square
Page 43 and 44: Effect of Board Thickness On Topsid
Page 45 and 46: Solder Mask Selection Matte Finish
Page 47 and 48: Cleaning Chemistry Compatibility
Page 49 and 50: Inspectability - AOI, AXI, HVI •
Page 51 and 52: Cracked Cap Issue • PCA Is Assemb
Page 53 and 54: Source Of Contamination What is Sou
Page 55 and 56: DFX Software Flexibility • Concur
Page 57: DFX PCA-PCB Software Systems Mentor
Page 61 and 62: Closing Thought “We can’t solve
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Root Cause Failure Analysis of Printed Circuit Board ... - SMTA

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