KLA
Surfscan 6420 Unpatterned Surface
What it is
How it works
General reference — not yet source-verifiedUnpatterned surface inspection systems examine bare wafers for surface defects and contamination before the wafers move into later fabrication steps.
Surface inspection tools in this class typically scan the wafer surface and detect light scattering or similar signals that indicate particles or other imperfections.
Where it fits in the process flow
The KLA Surfscan 6420 Unpatterned Surface fits in the metrology and inspection portion of semiconductor manufacturing.[2]
Applications
The KLA Surfscan 6420 Unpatterned Surface is used for inspection of bare wafer surfaces.[2]
What do the numbers mean?
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
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
What wafer size does the KLA Surfscan 6420 Unpatterned Surface handle?
The KLA Surfscan 6420 Unpatterned Surface is for eight-inch wafers.[2][1]
What category does the KLA Surfscan 6420 Unpatterned Surface belong to?
The KLA Surfscan 6420 Unpatterned Surface belongs to the metrology and inspection category.[2]
Not publicly documented
The following facts about the Surfscan 6420 Unpatterned Surface 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 Surfscan 6420 Unpatterned Surface are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the Surfscan 6420 Unpatterned Surface 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 Surfscan 6420 Unpatterned Surface 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 Surfscan 6420 Unpatterned Surface are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the Surfscan 6420 Unpatterned Surface 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 photo
- [2]waferpedia.com — waferpedia.comwaferpedia.com
Last updated Oct 9, 2026.
Compare with similar tools
View all →The KLA .204 PSL Wafer is an 8-inch NIST-traceable reference wafer compatible with Surfscan 6xy0 and Sp1 particle counters.
KLA .496 PSL Wafer is an 8-inch NIST traceable wafer stated to be capable on Surfscan 6xy0 and SP1.
The KLA .498 PSL Wafer is a NIST traceable reference wafer.
