Thomas Rodgers, Senior Director of Market Strategy, ZEISS Microscopy

The Top Failure Analysis Challenges for Advanced Packaging in 2026

The semiconductor industry is entering a new era where performance gains are increasingly delivered through advanced packaging, not just transistor scaling. Chiplets, 2.5D/3D integration, high bandwidth memory (HBM), hybrid bonding, and co-packaged optics (CPO) are enabling unprecedented bandwidth, power efficiency and system-level performance.

But as heterogeneous integration becomes the new norm, failure analysis (FA) is becoming significantly more difficult. The very innovations that unlock performance are creating dense, multi-layered, multi-material structures that push traditional FA tools and methods to the edge.

In 2026, the biggest challenges will stem from:
• deeply buried structures
• heterogeneous materials
• multi-physics interactions
• new interconnect technologies
• chiplet-level system behavior

New and emerging technologies, like CPO, tightly integrate lasers, modulators, photodiodes, and silicon photonics with high-power ASICs. This creates a set of FA challenges that engineers have never had to confront before—photonic failure modes located deep inside the package.

In 2026, we will see more emphasis on cross-disciplinary engineering collaboration to solve these challenges. Multi-modal workflows will be increasingly necessary and will also leverage artificial intelligence to speed up FA—from data collection to defect localization to root-cause analysis. This evolution is essential for supporting the reliability, yield, and performance of next-generation devices.