{ "query": "Diffusion Barrier Plating in Electronics", "total": 20, "limit": 10, "catalog_generated_at": "2026-09-17T18:09:54Z", "results": [ { "report_id": "SEM-EVIDENCE-0002", "slug": "diffusion-barrier-plating-in-electronics", "title": "Diffusion Barrier Plating in Electronics", "abstract": "This paper covers the use of diffusion barriers in electronics manufacturing and the practical reasons they matter. The source page notes that diffusion barriers have been used for decades, but that SEM Lab still sees cases where barrier layers are omitted when they likely should have been used. The page positions the paper as a series of examples illustrating diffusion-barrier use in electronics manufacturing and links the issue directly to soldering-process quality and solder-joint reliability. That makes the paper useful both as a microstructural reference and as a process-selection reference.", "failure_modes": [ "barrier-layer omission", "interfacial degradation" ], "technologies": [ "diffusion barrier plating in electronics", "plating systems", "solder-joint reliability", "microstructural evaluation", "barrier layers", "manufacturing process quality" ], "materials": [ "diffusion-barrier plating", "solder" ], "methods": [ "SEM", "metallographic cross-sectioning" ], "keywords": [ "diffusion barrier plating in electronics", "plating systems", "solder-joint reliability", "microstructural evaluation", "barrier layers", "manufacturing process quality", "barrier-layer omission", "interfacial degradation", "diffusion-barrier plating", "solder", "SEM", "metallographic cross-sectioning" ], "audience": [ "electronics failure-analysis engineers", "manufacturing engineers", "materials engineers", "plating engineers", "reliability engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "30.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/diffusion-barrier-plating-in-electronics.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0013", "slug": "images-of-failures-in-microelectronics-packaging", "title": "Images of Failures in Microelectronics Packaging", "abstract": "This paper is positioned as a collection of failures seen at SEM Lab in microelectronics packaging. The source page states that it includes examples such as gold embrittlement, mechanical damage, solder-joint failure, black pad syndrome, and various other failure mechanisms. That makes the paper useful as a broad visual and mechanism-oriented reference rather than a narrowly focused single-topic treatment. It appears to function as a consolidated packaging-failure example set.", "failure_modes": [ "gold embrittlement", "mechanical damage", "black pad", "solder-joint failure" ], "technologies": [ "failures in microelectronics packaging", "gold embrittlement", "mechanical damage", "solder-joint failure", "black pad syndrome", "packaging failure mechanisms", "image examples" ], "materials": [ "microelectronics packaging", "solder" ], "methods": [ "SEM", "visual comparison" ], "keywords": [ "failures in microelectronics packaging", "gold embrittlement", "mechanical damage", "solder-joint failure", "black pad syndrome", "packaging failure mechanisms", "image examples", "black pad", "microelectronics packaging", "solder", "SEM", "visual comparison" ], "audience": [ "electronics failure-analysis engineers", "packaging engineers", "reliability engineers", "manufacturing engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "320.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/images-of-failures-in-microelectronics-packaging.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0011", "slug": "gold-embrittlement-of-solder-joints", "title": "Gold Embrittlement of Solder Joints", "abstract": "This expanded paper draws on solder-joint investigations performed over more than 20 years. It examines eutectic tin-lead, SN62, Sn-Ag, and SAC305 joints using BSE SEM imaging, EDS, image analysis, fracture-surface examination, plating cross-sections, and mass-balance calculations. The paper treats approximately 3 wt% gold as a useful screening value while showing why average gold concentration alone can be misleading. Case evidence includes localized Au-Sn segregation below the calculated joint average, agreement and disagreement between chemistry and image area, Cu- and Ni-bearing reaction products in lead-free systems, an extreme SAC305 transformation, thin die-attach damage during cool-down, anomalous connector plating, thermal-aging effects, and low-gold comparison cases.", "failure_modes": [ "gold embrittlement", "brittle solder-joint fracture" ], "technologies": [ "gold embrittlement of tin-based solder joints", "AuSn4", "AuSn2", "gold inventory", "intermetallic volume fraction", "Sn-Pb", "SN62", "Sn-Ag", "SAC305", "Cu-bearing reaction products", "SEM/EDS", "BSE imaging", "image analysis", "fracture surfaces", "thermal aging", "plating verification" ], "materials": [ "gold", "solder", "intermetallic compounds" ], "methods": [ "metallographic cross-sectioning", "SEM", "EDS" ], "keywords": [ "gold embrittlement of tin-based solder joints", "AuSn4", "AuSn2", "gold inventory", "intermetallic volume fraction", "Sn-Pb", "SN62", "Sn-Ag", "SAC305", "Cu-bearing reaction products", "SEM/EDS", "BSE imaging", "image analysis", "fracture surfaces", "thermal aging", "plating verification", "gold embrittlement", "brittle solder-joint fracture", "gold", "solder", "intermetallic compounds", "metallographic cross-sectioning", "SEM", "EDS" ], "audience": [ "failure-analysis engineers", "materials engineers", "reliability engineers", "soldering-process engineers", "electronics-packaging engineers", "manufacturing engineers", "quality engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "150.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/gold-embrittlement-of-solder-joints.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0014", "slug": "intermetallics-in-solder-joints", "title": "Intermetallics in Solder Joints", "abstract": "This paper explains why intermetallic compounds in solder joints are not a simple \"good\" or \"bad\" issue. It covers the basic role of intermetallic layers, why excessive intermetallic formation can damage joint performance, and why the absence of expected interfacial intermetallics can indicate a process or material problem. The paper discusses several intermetallic systems that are important in electronics work, including Cu6Sn5, Cu3Sn, Ni3Sn4, AuSn4, and Ag3Sn. It also includes discussion of gold embrittlement, volume-fraction effects, and ternary intermetallic phases that can contribute to brittle interfacial behavior.", "failure_modes": [ "excessive intermetallic growth", "brittle interfacial fracture" ], "technologies": [ "solder-joint intermetallic compounds", "gold embrittlement", "Cu-Sn intermetallics", "Ni-Sn intermetallics", "Ag-Sn intermetallics", "interfacial solder-joint microstructure" ], "materials": [ "Cu6Sn5", "Cu3Sn", "Ni3Sn4", "AuSn4", "Ag3Sn" ], "methods": [ "metallographic cross-sectioning", "SEM", "EDS" ], "keywords": [ "solder-joint intermetallic compounds", "gold embrittlement", "Cu-Sn intermetallics", "Ni-Sn intermetallics", "Ag-Sn intermetallics", "interfacial solder-joint microstructure", "excessive intermetallic growth", "brittle interfacial fracture", "Cu6Sn5", "Cu3Sn", "Ni3Sn4", "AuSn4", "Ag3Sn", "metallographic cross-sectioning", "SEM", "EDS" ], "audience": [ "electronics failure-analysis engineers", "manufacturing engineers", "materials engineers", "reliability engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "45.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/intermetallics-in-solder-joints.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0003", "slug": "failure-analysis-of-aluminum-electrolytic-capacitors", "title": "Failure Analysis of Aluminum Electrolytic Capacitors", "abstract": "This paper is described on the source page as a 21-page booklet summarizing the author's experience performing failure analysis on aluminum electrolytic capacitors over a fifteen-year period. It covers failure mechanisms seen in these capacitors and the failure-analysis techniques used to identify the failures. The source page also notes that the document includes figures, equations, and graphs. That makes it a deeper stand-alone technical reference rather than a short overview paper.", "failure_modes": [ "capacitor failure" ], "technologies": [ "failure analysis of aluminum electrolytic capacitors", "capacitor failure mechanisms", "analytical techniques", "figures", "equations", "graphs", "component failure analysis" ], "materials": [ "aluminum electrolyte systems" ], "methods": [ "component failure analysis" ], "keywords": [ "failure analysis of aluminum electrolytic capacitors", "capacitor failure mechanisms", "analytical techniques", "figures", "equations", "graphs", "component failure analysis", "capacitor failure", "aluminum electrolyte systems" ], "audience": [ "component engineers", "failure-analysis engineers", "reliability engineers", "manufacturing engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "105.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/failure-analysis-of-aluminum-electrolytic-capacitors.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0009", "slug": "forward-voltage-signatures-in-electronic-component-failure-analysis", "title": "Forward-Voltage Signatures in Electronic Component Failure Analysis", "abstract": "This paper examines ten anonymized semiconductor and optoelectronic failure-analysis cases and organizes their electrical behavior into practical forward-voltage signature classes. It distinguishes near-zero voltage, open or elevated voltage, current-dependent elevation, depressed voltage, and nominal voltage with degraded function. The central engineering lesson is that forward voltage is a strong triage and localization measurement, but not a stand-alone root-cause determination. Controlled current and temperature, matched references, functional observations, and targeted physical analysis are needed to support a defensible conclusion.", "failure_modes": [ "open circuit", "short circuit", "electrical degradation" ], "technologies": [ "forward-voltage interpretation in component failure analysis", "diode testing", "LED failure", "electrical overstress", "series resistance", "die cracking", "wear-out", "SEM correlation" ], "materials": [ "semiconductor junctions" ], "methods": [ "forward-voltage measurement", "electrical screening" ], "keywords": [ "forward-voltage interpretation in component failure analysis", "diode testing", "LED failure", "electrical overstress", "series resistance", "die cracking", "wear-out", "SEM correlation", "open circuit", "short circuit", "electrical degradation", "semiconductor junctions", "forward-voltage measurement", "electrical screening" ], "audience": [ "failure-analysis engineers", "reliability engineers", "component engineers", "manufacturing engineers", "quality engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "25.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/forward-voltage-signatures-in-electronic-component-failure-analysis.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0012", "slug": "hasl-finish-on-pwb", "title": "HASL Finish on PWBs", "abstract": "This paper covers HASL finish on PWBs and fits the practical process side of the SEM Lab paper catalog. It belongs with the papers that help engineers evaluate assembly-related materials and process conditions before those conditions turn into field or manufacturing failures. The paper should be positioned as a useful reference for engineers dealing with solderability, surface-finish quality, and the effect of board finish condition on assembly results and longer-term reliability.", "failure_modes": [ "solderability degradation", "surface-finish defects" ], "technologies": [ "HASL finish on printed wiring boards", "solderability", "surface finish evaluation", "assembly quality", "process control", "PWB reliability" ], "materials": [ "HASL", "solder", "printed wiring board" ], "methods": [ "surface-finish evaluation", "solderability assessment" ], "keywords": [ "HASL finish on printed wiring boards", "solderability", "surface finish evaluation", "assembly quality", "process control", "PWB reliability", "solderability degradation", "surface-finish defects", "HASL", "solder", "printed wiring board", "surface-finish evaluation", "solderability assessment" ], "audience": [ "manufacturing engineers", "process engineers", "materials engineers", "quality engineers", "reliability engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "35.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/hasl-finish-on-pwb.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0015", "slug": "mlcc-bending-flexure-fracture", "title": "MLCC Bending and Flexure Fracture Failure Mechanisms", "abstract": "This paper converts selected SEM Lab MLCC bending and flexure fracture case records into a stand-alone paid technical paper. It focuses on how to interpret MLCC ceramic cracks as electrical failure evidence, especially when fractures intersect active capacitor plates, bridge opposite-polarity electrodes, or coincide with short sites. The paper keeps case identifiers for traceability and separates direct bending/flexure evidence from supporting cases, inferred comparisons, and a no-fracture control case.", "failure_modes": [ "MLCC flex cracking", "bending fracture", "electrical leakage", "short circuit" ], "technologies": [ "MLCC flex cracking", "bending fracture", "flexure fracture", "depanelization stress", "microsection analysis", "capacitor shorting", "leakage", "fracture interpretation" ], "materials": [ "ceramic capacitor", "nickel electrodes" ], "methods": [ "microsectioning", "electrical analysis", "microscopy" ], "keywords": [ "MLCC flex cracking", "bending fracture", "flexure fracture", "depanelization stress", "microsection analysis", "capacitor shorting", "leakage", "fracture interpretation", "electrical leakage", "short circuit", "ceramic capacitor", "nickel electrodes", "microsectioning", "electrical analysis", "microscopy" ], "audience": [ "reliability engineers", "failure-analysis engineers", "manufacturing engineers", "quality engineers", "design engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "45.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/mlcc-bending-flexure-fracture.html", "page_url": "https://www.semlab.com/reports/mlcc-bending-flexure-fracture.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" }, { "report_id": "SEM-EVIDENCE-0021", "slug": "physical-composition-inorganic-fillers-solder-mask", "title": "Physical Composition of Inorganic Fillers in Printed Circuit Solder Mask", "abstract": "This paper converts archived SEM/EDS elemental measurements into estimated physical phase fractions for printed-circuit solder mask. The clean/reference cohort indicates approximately 10-11 vol% total inorganic filler in the modeled mask, with barium sulfate as the principal fitted filler and silica as a smaller but persistent secondary constituent. The paper explains the constrained-regression, stoichiometric, molar-mass, and density basis used to move from ZAF-corrected atomic percentages to mole, weight, and volume fractions. It also separates clean/reference acquisitions from residue-on-mask spectra and states the limits of localized SEM/EDS measurements, the binder surrogate, phase identification, and the small number of independent cases.", "failure_modes": [ "solder-mask formulation variation", "solder-mask cracking", "adhesion loss" ], "technologies": [ "physical composition of inorganic fillers in printed circuit solder mask", "solder-mask formulation", "barium sulfate filler", "silica filler", "filler volume fraction", "SEM/EDS interpretation", "constrained regression", "materials engineering", "process comparison" ], "materials": [ "solder mask", "barium sulfate", "silica", "epoxy binder" ], "methods": [ "SEM", "EDS", "nonnegative constrained regression", "stoichiometric mass-balance analysis" ], "keywords": [ "physical composition of inorganic fillers in printed circuit solder mask", "solder-mask formulation", "barium sulfate filler", "silica filler", "filler volume fraction", "SEM/EDS interpretation", "constrained regression", "materials engineering", "process comparison", "solder-mask formulation variation", "solder-mask cracking", "adhesion loss", "solder mask", "barium sulfate", "silica", "epoxy binder", "SEM", "EDS", "nonnegative constrained regression", "stoichiometric mass-balance analysis" ], "audience": [ "printed-circuit-board engineers", "materials engineers", "manufacturing engineers", "process engineers", "failure-analysis engineers", "reliability engineers", "quality engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "30.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/physical-composition-inorganic-fillers-solder-mask.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-09-17" }, { "report_id": "SEM-EVIDENCE-0018", "slug": "solder-joint-analysis", "title": "Solder Joint Analysis", "abstract": "This paper covers techniques for analyzing solder joints and highlights SEM Lab capabilities in solder-joint evaluation and failure analysis. The source page specifically identifies metallurgical cross-sectioning, SEM/EDS analysis, failure analysis, and computational metallurgical analysis as part of the paper's scope. The page also states that the analysis results are essential for credible design, process, and product failure analysis. That positions the paper as a broad solder-joint reference rather than a narrow mechanism note.", "failure_modes": [ "solder-joint failure", "metallurgical defects" ], "technologies": [ "solder joint analysis", "metallurgical cross-sectioning", "SEM/EDS", "solder-joint failure analysis", "computational metallurgical analysis", "design and process evaluation" ], "materials": [ "solder", "intermetallic compounds" ], "methods": [ "metallurgical cross-sectioning", "SEM", "EDS", "computational metallurgical analysis" ], "keywords": [ "solder joint analysis", "metallurgical cross-sectioning", "SEM/EDS", "solder-joint failure analysis", "computational metallurgical analysis", "design and process evaluation", "solder-joint failure", "metallurgical defects", "solder", "intermetallic compounds", "SEM", "EDS" ], "audience": [ "failure-analysis engineers", "manufacturing engineers", "materials engineers", "reliability engineers", "product engineers" ], "availability": [ "individual_purchase" ], "price": { "amount": "55.00", "currency": "USD" }, "purchase_url": "https://www.semlab.com/papers.html#catalog", "page_url": "https://www.semlab.com/reports/solder-joint-analysis.html", "author": "Ed Hare, PhD", "publisher": "SEM Lab, Inc.", "date_modified": "2026-08-01" } ] }