Hitachi
8840 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
The Hitachi 8840 CD-SEM is a critical dimension scanning electron microscope used in semiconductor manufacturing for metrology and inspection.[1][3]
How it works
General reference — not yet source-verifiedA CD-SEM uses a focused electron beam to scan features on a wafer surface, generating high-resolution images for precise measurement of critical dimensions.
The instrument relies on secondary electron detection to produce topographical images of patterned structures.
Where it fits in the process flow
General reference — not yet source-verifiedThe 8840 CD-SEM sits in the metrology and inspection segment of semiconductor fabrication, typically used after lithography and etch steps to verify that features meet design specifications.
The tool is used for in-line process control, measuring critical dimensions on product wafers without destroying them.
Applications
General reference — not yet source-verifiedThe 8840 CD-SEM is applied to critical dimension measurement of photoresist and etched features in advanced semiconductor device manufacturing.
What do the numbers mean?
Wafer handling1
Dimensions & facilities1
Configuration & options5
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 8840 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 8840 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 8840 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 8840 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 8840 CD-SEM are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the 8840 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 (3)Every fact above is drawn from these public sources
- [1]Inventory photo
- [2]waferpedia.com — waferpedia.comwaferpedia.com
- [3]Hitachi | Service for Hitachi S-8840 CD-SEM systems — classoneequipment.comclassoneequipment.com
Last updated Oct 8, 2026.
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