Lam Research
Rainbow 4720 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.
The Lam Rainbow 4720 Dry is a dry etcher made by Lam Research. The Rainbow 4720 Dry supports 6 inch wafers.[1]
What it is
How it works
General reference — not yet source-verifiedIons and radicals from the plasma chemically react with the wafer material and physically bombard the surface to etch defined patterns.
What do the numbers mean?
Wafer handling1
Configuration & options3
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 Rainbow 4720 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 Rainbow 4720 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 Rainbow 4720 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 Rainbow 4720 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 Rainbow 4720 Dry are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the Rainbow 4720 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]Equipment inventory listing
- [2]waferpedia.comwaferpedia.com
Last updated Oct 6, 2026.
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