Physics Limits Interposer Line Lengths


Electrical interposers provide a convenient surface for mounting multiple chips within a single package, but even though interposer lines theoretically can be routed anywhere, insertion losses limit their practical length. Lines on interposers — and on silicon interposers in particular — can be exceedingly narrow. Having a small cross-section makes such lines resistive, degrading signals... » read more

Chip Industry Week in Review


Qualcomm announced plans to buy Alphawave Semi for ~$2.4 billion in a deal expected to close in Q1 2026. Qualcomm plans to leverage Alphawave Semi's connectivity products, including chiplets, to develop high-performance, low-power solutions for AI inferencing and customized CPUs in data centers. Qualcomm's traditional targets were mobile phones and edge computing. [Updated 6/9.] Global semic... » read more

Packaging With Fewer People And Better Results


Advanced packaging has evolved far beyond the simple stacking of dies and connecting of interposers. Once a passive conduit between silicon and the outside world, it has become an active component of overall device performance. In today’s multi-die assemblies, the assembly and packaging lines are expected to maintain signal integrity at multi-gigahertz frequencies, manage heat in verticall... » read more

Chip Industry Week In Review


Check out our new Inside Chips podcast. President Trump’s ‘Liberation Day’ tariffs were announced this week. The executive order stated that semiconductors and copper imports are not directly subject to the reciprocal tariff, although the exemption may be short-lived. Semiconductor equipment and tools were not mentioned, leaving the industry searching for clarification. Regardless, hig... » read more

Big Changes Ahead For Interposers And Substrates


Interposers and substrates are undergoing a profound transformation from intermediaries to engineered platforms responsible for power distribution, thermal management, high-density interconnects, and signal integrity in the most advanced computing systems. This shift is being driven by AI, high-performance computing (HPC), and next-generation communications, where the need for heterogeneous ... » read more

What Exactly Are Chiplets And Heterogeneous Integration?


The terms “chiplet” and “heterogeneous integration” fill news pages, conference papers, and marketing presentations, and for the most part engineers understand what they're reading. But speakers sometimes stumble during a presentation trying to figure out whether a particular die qualifies as a chiplet, and heterogeneous integration comes in different guises for different people. Both t... » read more

Challenges Grow For Medical ICs


Demand for medical ICs used inside and outside the body is growing rapidly, but unique manufacturing and functional requirements coupled with low volumes have turned this into a complex and extremely challenging market. Few semiconductor applications demand this level of precision, reliability, and long-term stability. Unlike consumer electronics, where failure might mean a reboot or chip re... » read more

Chip Industry Week In Review


Worldwide silicon wafer shipments declined nearly 2.7% to 12,266 million square inches in 2024, with wafer revenue contracting 6.5% to $11.5 billion, according to the SEMI Silicon Manufacturers Group. CSIS released a new report, “Critical Minerals and the Future of the U.S. Economy,” with detailed analysis and policy recommendations for building a secure mineral supply chain for semicond... » read more

Chip Industry Week In Review


GlobalFoundries will create a new center for advanced packaging and testing of U.S.-made essential chips within its New York manufacturing facility. A flurry of announcements on advanced semiconductors and AI rolled out this week as U.S. President Biden wrapped up his term: The Biden-Harris Administration released an Interim Final Rule on Artificial Intelligence Diffusion to strengthen ... » read more

Chip Industry Week in Review


Lawrence Livermore National Laboratory is ramping up R&D for next-gen EUV and plasma-based particle sources, aiming to increase the EUV laser source power by an order of magnitude while also making it more energy-efficient. Specifically, the goal is to replace today's CO2-based laser with a solid-state laser, using a thulium-doped yttrium lithium fluoride medium to increase the laser's powe... » read more

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