Signatone
WL 250
What it is
How it works
The WL 250 has the same sturdy features found in the manual probe station, and it adds the ability to step and repeat as well as run automatically. The WL 250 includes a probe station controller built around an AT computer running Windows 3.1 based software. The Signatone Solutions software allows setup of complex probing applications and control of all motions. The WL 250 has a point-and-shoot feature that lets the user point to a target probe site on the computer screen and move the chuck to that position. The WL 250 also features 2 point alignment, wafer mapping of good or bad die, and soft Z control.[3]
Where it fits in the process flow
General reference — not yet source-verifiedProbe stations are used after wafers or test structures have been fabricated and are ready for electrical access. Probe stations fit into engineering analysis, device characterization, failure analysis, and process-monitor flows where direct on-wafer contact is needed before packaging or after selected fabrication steps.
What do the numbers mean?
Configuration & options10
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
Is the Signatone WL 250 manual or semi-automatic?
The Signatone WL 250 is a semi-automatic probe station.[2][3]
What wafer formats does the WL 250 support?
The WL 250 is available in 150 mm or 200 mm formats.[3]
Can the WL 250 perform automated site-to-site movement?
The WL 250 has the ability to step and repeat as well as run automatically.[3]
Not publicly documented
The following facts about the WL 250 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 WL 250 are on record.
Answerable by: OEM historical records or a trade-press announcement
No publicly documented variants, configuration options, or revision breakpoints of the WL 250 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 WL 250 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 WL 250 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the WL 250 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]web.archive.org — signatone.com (Aug 22, 2009)web.archive.org
Last updated Oct 16, 2026.
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