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Unity II E 855 DD Oxide
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 Unity II E 855 DD is an oxide etcher that processes 8-inch (200 mm) wafers.[1]
How it works
General reference — not yet source-verifiedReactive-ion etching (RIE) is the standard operating principle for oxide etchers such as the Unity II series, using a combination of physical ion bombardment and chemical reactions to remove silicon dioxide layers.
Applications
General reference — not yet source-verifiedPrimary applications include etching vias and trenches for interconnect formation in advanced logic and memory devices, especially where aluminum or copper metallization is used.
What do the numbers mean?
Wafer handling1
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.
Not publicly documented
The following facts about the Unity II E 855 DD Oxide are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
Fewer than 3 independently cited specifications for the Unity II E 855 DD Oxide are on record; the remainder await public documentation.
Answerable by: an OEM datasheet, a cleanroom equipment inventory, or an engineer who operated or installed it
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the Unity II E 855 DD Oxide 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 DD Oxide 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 DD Oxide 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 DD Oxide are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
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]Equipment inventory listing
Last updated Aug 20, 2026.