ASML unveils EUV light source advance that could yield 50% more chips by 2030

Transistor scaling and node naming

• Commenters clarify that the news is about throughput per EUV tool, not shrinking transistors.
• Modern “3nm” processes still have gate pitches and widths in the 30–50 nm range; some features go down to ~10–14 nm, showing how marketing diverges from physics.
• There’s discussion of moving from “nm” to angstrom labels (e.g., 18Å) and jokes about “0 nm” / “-1 nm” being pure marketing.
• Several people argue a better metric would be average gates per mm² rather than node labels, likening current terminology to loose “free range” food labels.

EUV light source mechanism and upgrades

• The core method: spray microscopic tin droplets in vacuum and hit each with precisely timed laser pulses to create a tiny EUV-emitting plasma.
• The disclosed advance: doubling droplet rate to ~100,000/s and moving from one to two shaping pulses (plus the main pulse), pushing source power from ~600 W to 1,000 W, with a roadmap to 1,500–2,000 W.
• Commenters stress how extreme this is for a vacuum system highly sensitive to heat and contamination.

Why EUV is uniquely hard

• Multiple explanations contrast EUV with X-rays and visible light:
  • Many materials are opaque at these wavelengths, forcing all-mirror optics with tight reflectivity and absorption constraints.
  • X-ray tubes are efficient only at much higher voltages (shorter wavelengths); at EUV energies they’d be absurdly inefficient and thermally impossible.
  • Focusing and photoresist behavior get much harder at higher photon energies; X-ray lithography exists but is considered even less practical and more stochastic than EUV.
• Overall consensus: EUV “barely works” and required a moonshot-level effort.

Engineering complexity and cleanliness

• Interior conditions must be far cleaner than any human cleanroom while continuously “exploding” tin; this drives extreme purity, maintenance, and multi-hundred-million-euro tool costs.

Corporate, geopolitical, and competitive context

• Thread pushes back on framing this as ASML vs “U.S. rivals”: the EUV source is developed by a U.S. subsidiary, within a broader multinational supply chain (optics, mechanics, etc.).
• Some note U.S. funding and deliberate tech transfer; others emphasize ASML as a genuine European-led integrator of global technologies.
• Potential competitors mentioned include a U.S. light-source startup backed by CHIPS Act funding and some Japanese research efforts, but timelines are seen as long and uncertain.

Economic impact and AI demand

• Several commenters predict that increased throughput will mainly feed AI accelerators.
• Frustration that consumer CPUs/GPUs are delayed or capacity-constrained due to AI demand, with one call for heavy-handed regulation to prevent AI firms from monopolizing advanced manufacturing.
• Others skeptically note that even with more logic chips, memory and storage capacity may remain bottlenecks.