Hitachi
8640 CD-SEM
Provisional entry — research in progress
This page was generated automatically from cited public sources and hasn't completed the full research pass yet. Every specification shown carries its source; more detail is added as research completes.
What it is
General reference — not yet source-verifiedA CD-SEM is a metrology and inspection tool used to measure patterned features on wafers by electron microscopy. CD-SEM tools are used to examine linewidth, spacing, and profile-related dimensional information on microfabricated structures.
How it works
The Hitachi 8640 is a critical dimension scanning electron microscope. The Hitachi 8640 is configured with a handler and a console.[2][1]
Where it fits in the process flow
General reference — not yet source-verifiedCD-SEM tools are used after pattern formation steps when dimensional verification is needed on wafer features. CD-SEM tools commonly support process monitoring around lithography and etch by checking whether transferred patterns match intended dimensions.
Applications
General reference — not yet source-verifiedCD-SEM tools are applied to measurement of critical patterned features in semiconductor manufacturing. CD-SEM tools are used for linewidth control, space measurement, process characterization, and monitoring of pattern fidelity on device structures.
What do the numbers mean?
Wafer handling2
- Handler[2]
Dimensions & facilities1
Configuration & options3
- Console[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
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
Not publicly documented
The following facts about the 8640 CD-SEM 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 production dates or lifecycle milestones (introduction, end of production, EOL) for the 8640 CD-SEM are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the 8640 CD-SEM 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 8640 CD-SEM 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 8640 CD-SEM are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 8640 CD-SEM is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No research found yet — worked with this tool? Share what you know.
Sources & citations
Sources (2)Every fact above is drawn from these public sources
- [1]waferpedia.com — waferpedia.comwaferpedia.com
- [2]inventory listing
Last updated Oct 16, 2026.
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