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The Hidden Heat Challenge of 3D ICs—and What Designers Need to Know

The Hidden Heat Challenge of 3D ICs—and What Designers Need to Know

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 Why is thermal analysis no longer an afterthought in 3D IC design—and what is Siemens doing to empower engineers across every step of the process? In this episode of the Siemens EDA Podcast Series on 3D IC chiplet ecosystems, host John McMillan welcomes András Vass-Varnai, 3DIC Solutions Engineer at Siemens Digital Industries, to spotlight one of the most critical (and often underestimated) challenges in modern chip design: thermal analysis. As power densities soar and chiplets stack closer together than ever before, effective thermal management is essential—not just for performance, but for reliability, lifespan, and product feasibility. András explores how Siemens is bridging the gap between design, packaging, and thermal engineering through integrated toolchains and a new generation of digital twins. Whether you're a silicon designer, package architect, or thermal analyst, this episode offers valuable insights into the future of collaborative thermal modeling, IP protection, and real-time simulation integration. What You’ll Learn in this Episode: Andrass Vass-Varnai’s background and current role at Siemens EDA (1:25) How is the shift to 3D IC packaging affecting thermal analysis? (2:35) What is the issue with the current approach to thermal analysis? (4:20) What is the significance of having thermal models for the customers? (6:50) Siemens' vision for the ideal future workflow (11:00) Conclusion and future outlook (17:00) Connect with John McMillan LinkedIn Website Connect with Andras Vass-Varnai LinkedIn Website

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