Tokyo Electron
Unity II E 855 II IEM Dry
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
How it works
General reference — not yet source-verifiedDry etchers process wafers inside a vacuum chamber where process gases are introduced and energized to create reactive species that attack exposed film areas. Dry etchers rely on chamber conditions, gas chemistry, and plasma-driven surface reactions to remove selected materials while the mask protects other regions. Dry etchers commonly combine chemical reaction and ion-assisted bombardment so that etched features can be transferred with directional control.
Where it fits in the process flow
The Tokyo Electron Unity II E 855 II IEM Dry belongs to the etch equipment category.[2]
Applications
General reference — not yet source-verifiedDry etchers are used to pattern wafer films by removing exposed regions while leaving masked regions in place. Dry etchers are applied in semiconductor fabrication wherever a stack requires selective material removal as part of device formation, interconnect definition, contact opening, or isolation patterning. Dry etchers are also used in process flows that require anisotropic profile control or plasma-based material transfer that is not practical with wet chemistry alone.
What do the numbers mean?
Wafer handling1
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 Unity II E 855 II IEM Dry 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 Unity II E 855 II IEM Dry are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the Unity II E 855 II IEM Dry 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 Unity II E 855 II IEM Dry 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 Unity II E 855 II IEM Dry are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the Unity II E 855 II IEM Dry 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]inventory listing
- [2]waferpedia.com — waferpedia.comwaferpedia.com
Last updated Oct 16, 2026.
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