tag: yield

What’s Failing At The Interface
By Gregory Haley - 07 Apr, 2026 - Comments: 0

Key Takeaways The interface is where failures in advanced packaging become visible, but it's increasingly not where they originate. Weak interfaces often don't fail at time zero, but they do degrade due to parametric drift and margin erosion that binary test screens miss entirely. The temporary test interconnect is the largest variable in the measurement chain and must be controlled ... » read more

Maximize Your Revenue With High-Speed Test Performance Optimization
By Jesse Ko - 10 Mar, 2026 - Comments: 0

In today’s competitive semiconductor market, revenue growth is often associated with design innovation, process advancements, or packaging breakthroughs. However, a powerful and frequently overlooked revenue lever lies much closer to production: high-speed test performance optimization. Test variability—particularly at high frequencies—can significantly influence product binning, yield... » read more

Detecting Chemical Variability At Advanced Nodes
By Gregory Haley - 10 Mar, 2026 - Comments: 2

Key Takeaways Yield loss is increasingly driven by molecular variability in thin films, interfaces, and contamination rather than visible defects. Reliability issues often appear first as parametric drift or margin erosion under workload and thermal stress. Detection requires correlating molecular metrology, embedded electrical telemetry, and AI-driven wafer inspection. As s... » read more

Chiplets 2026: Where Are We Today?
By Barry Pangrle - 24 Feb, 2026 - Comments: 0

Jim Handy of Objective Analysis and Jawad Nasrullah from Palo Alto Electron kicked off last week's Chiplet Summit with predictions about where the chiplet market is headed and why chiplets are needed to accelerate AI. Handy noted that in the 1990s, multi-chip modules (MCMs) led to mid-'90s multi-chip packages (MCPs), and then progressed to NAND flash stacking, stacked die, big chips (e.g., X... » read more

When Cleaning Chips Isn’t Clean Enough
By Gregory Haley - 19 Feb, 2026 - Comments: 0

Key Takeaways Contamination is becoming much more difficult to identify at the most advanced nodes, forcing fabs to rethink how control is achieved. Issues may show up as electrical or statistical anomalies, not particles, and not at time zero. Reliable classification is needed to identify critical contamination and reduce time and effort spent on nuisance failures. For much... » read more

Beyond Optical: A New E-Beam Inspection For Advanced Chips
By Christophe Begue - 10 Feb, 2026 - Comments: 0

The semiconductor industry is defined by its relentless pursuit of smaller, faster, and more powerful chips. As we push into advanced 3D architectures like gate-all-around (GAA) transistors, a critical challenge emerges: finding the defects that kill yield. Many of these flaws are deeply buried within complex structures and impossible to see with traditional optical inspection. This creates ... » read more

Advanced Packaging Traceability And Root Cause Analysis
By Aftkhar Aslam - 20 Nov, 2025 - Comments: 0

The semiconductor industry is undergoing a profound transformation. What once centered on single-die silicon packaged in QFN or BGA formats has evolved into a landscape of multi-die integration, chiplets, 3D stacking, and photonics coupling. These advanced packaging architectures are redefining design, manufacturing, and test paradigms—enabling new levels of performance, efficiency, and funct... » read more

Ensuring Reliability Becomes Harder In Multi-Die Assemblies
By Gregory Haley - 29 Oct, 2025 - Comments: 0

Multi-die assemblies are bringing together a variety of materials and processes with distinctly different physical properties, creating significant challenges in manufacturing and packaging that can impact yield at time zero and reliability in the field. What passes electrical screening at the end of the line may look good on paper, but these devices can still fail once exposed to rapid and ... » read more

Using AI/ML To Find And Correlate IC Test Data
By Ed Sperling - 15 Oct, 2025 - Comments: 0

What causes low yield in wafers? Usually it's due to design or process changes, but sometimes yield issues occur even if there haven't been any changes from one manufacturing lot to the next. Finding the cause requires some sleuthing, and the best approach for pinpointing problems is to mine design, process, and manufacturing data, and to correlate that data by date and time, by which equipment... » read more

Metrology’s Growing Role In Reducing False Defects
By Gregory Haley - 14 Oct, 2025 - Comments: 0

When a good die fails test and gets scrapped, often no one notices, because false failures look identical to real ones. Yet across the industry, these phantom defects are quietly eroding yield, inflating test costs, and masking the true health of manufacturing processes. At advanced nodes and in heterogeneous packaging, where margins are already razor-thin, even minor variations in contact r... » read more

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