How a GaN Substrate Breakthrough Could Shape Shin-Etsu Chemical’s (TSE:4063) Role in Advanced Electronics

Simply Wall St
  • IMEC announced that Shin-Etsu Chemical's 300-mm QST substrate, developed in partnership with QROMIS, enabled a record-breaking voltage resistance in GaN power device evaluations, surpassing 800V and addressing key scalability challenges.
  • This advance could accelerate the mass adoption of large-diameter GaN devices in fast-growing areas like AI data centers, electric vehicles, and industrial power systems.
  • We'll examine how Shin-Etsu Chemical's breakthrough in large-diameter GaN substrate technology shapes its investment narrative for advanced electronics.

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What Is Shin-Etsu Chemical's Investment Narrative?

For shareholders in Shin-Etsu Chemical, the big picture centers on the belief that innovation in advanced materials can unlock sizeable long-term value across high-tech end markets. The recent IMEC announcement about Shin-Etsu's 300-mm QST substrate achieving record voltage resistance in GaN devices could meaningfully reshape near-term investment catalysts. Where previous analysis highlighted slow revenue growth and a subdued outlook compared to peers, this breakthrough directly addresses a key bottleneck in GaN production. If early evaluations translate to real-world uptake in power-hungry segments like AI data centers and electric vehicles, Shin-Etsu could find itself at the center of a meaningful wave of adoption. At the same time, however, the pressure is now on to scale up mass production and prove cost efficiencies, with risks around execution, customer qualification, and market timing in focus. Price moves so far have not fully reflected this news, and its ultimate impact could shift risk and opportunity in the months ahead.
But while innovation has its upside, scaling 300-mm QST technology poses new operational risks that investors should not overlook.

Despite retreating, Shin-Etsu Chemical's shares might still be trading 31% above their fair value. Discover the potential downside here.

Exploring Other Perspectives

TSE:4063 Community Fair Values as at Nov 2025
Across five Simply Wall St Community fair value models, estimates range from ¥3,153 to a very large ¥6,550 per share, underscoring broad splits in outlook. With the recent GaN substrate milestone, many are watching to see if execution risks or new adoption waves drive the company’s next turn, explore these perspectives for a fuller picture.

Explore 5 other fair value estimates on Shin-Etsu Chemical - why the stock might be worth as much as 46% more than the current price!

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This article by Simply Wall St is general in nature. We provide commentary based on historical data and analyst forecasts only using an unbiased methodology and our articles are not intended to be financial advice. It does not constitute a recommendation to buy or sell any stock, and does not take account of your objectives, or your financial situation. We aim to bring you long-term focused analysis driven by fundamental data. Note that our analysis may not factor in the latest price-sensitive company announcements or qualitative material. Simply Wall St has no position in any stocks mentioned.

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