Waferpedia

ASML

Twinscan AT 850 B Wafer

LithographyASML Twinscan AT 850 family
Research Quality: 30% complete
Twinscan AT 850 B Wafer — Inventory photo
Fig. 01Twinscan AT 850 B WaferInventory photo[1]

Power

3 Phase[1]

Optics

Cymer laser[1]

What is it?

ASML Twinscan AT 850 B Wafer Stepper is a lithography tool described as a wafer stepper with several included modules and cabinets.

What do the numbers mean?

Power & electrical2

Phase
3 Phase[1]
Accurate?
50/60 Hz[1]
Accurate?

Optics & imaging1

Cymer laser[1]
Accurate?

Control & software1

ACC air control cabinet[1]
Accurate?

Configuration & options7

with HDD[1]
Accurate?
WS, WH, RH, EIM modules[1]
Accurate?
Chiller cabinet[1]
Accurate?
Transformer cabinet[1]
Accurate?
MDC, LCWC, MFCWC, MCWC cabinets[1]
Accurate?
Donaldson filter cabinet[1]
Accurate?
Cables[1]
Accurate?

Vintage & configurations

  1. 2002Vintage[1]

    The source states 2002 vintage.

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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • Phase3 Phase[1]
  • Configuration50/60 Hz[1]

Where are the manuals?

Generated from public-source data on file. Enter your email to access — nothing is published; details are routed privately.

Not publicly documented

Field notes

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Not publicly documented

The following facts about the Twinscan AT 850 B Wafer are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • No publicly documented variants, configuration options, or revision breakpoints of the Twinscan AT 850 B Wafer are on record.

    Answerable by: an OEM product catalog or an engineer who ordered or specified the tool

  • The control-system platform and OS era of the Twinscan AT 850 B Wafer are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • No publicly documented failure modes or field errata for the Twinscan AT 850 B Wafer are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the Twinscan AT 850 B Wafer is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the Twinscan AT 850 B Wafer are on record.

    Answerable by: an OEM parts catalog or a service engineer

No research found yet — worked with this tool? Share what you know.

Sources & citations

Sources (1)Every fact above is drawn from these public sources
  1. [1]Equipment inventory listing
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Last updated Jul 29, 2026.

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