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What is EUV lithography and why does it matter for semiconductors?

AlphaOS investment intelligence · Research and education only — not investment advice · Updated Jul 5, 2026

Extreme Ultraviolet (EUV) lithography is a cutting-edge photolithography technology that uses light with an extremely short wavelength (13.5 nanometers) to print intricate patterns on silicon wafers, enabling the manufacturing of smaller, more powerful, and energy-efficient semiconductor chips. This technology is critical for semiconductors because it allows chipmakers to continue shrinking transistor sizes beyond the capabilities of older deep ultraviolet (DUV) lithography, thereby adhering to Moore's Law and driving advancements in computing power for applications like artificial intelligence, high-performance computing, and advanced mobile devices.

Key Takeaways

  • EUV lithography utilizes a 13.5 nm wavelength, significantly shorter than DUV's 193 nm, enabling finer feature sizes.
  • ASML is the sole commercial supplier of EUV lithography systems globally, holding a near-monopoly in this critical technology.
  • EUV is essential for manufacturing advanced logic chips at 7nm, 5nm, 3nm, and future nodes, which are vital for next-generation electronics.
  • The high cost and complexity of EUV systems, each costing over $150 million, represent a significant barrier to entry for chip manufacturers.
  • EUV technology allows for increased transistor density, leading to more powerful and energy-efficient processors.
  • The adoption of EUV is a key differentiator for leading-edge foundries like TSMC and Samsung, impacting their competitive advantage.
  • EUV enables the continued scaling of semiconductor technology, supporting the growth of data-intensive industries such as AI and 5G.

Evidence & Analysis

  • ASML reported net sales of €27.6 billion in 2023, with EUV systems being a significant revenue driver.
  • TSMC's 3nm process node, used in Apple's A17 Pro chip, heavily relies on EUV lithography.
  • An ASML EUV machine can cost upwards of $150 million, with the latest High-NA EUV systems projected to exceed $300 million.
  • EUV technology reduces the number of patterning steps compared to multi-patterning DUV, improving yield and reducing manufacturing costs for advanced nodes.
  • The EUV light source, generated by a tin plasma, is extremely complex, requiring 50,000 pulses per second to achieve sufficient power.

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