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KLA

5100 Overlay Measurement

Metrology & InspectionKLA 5100 family
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KLA5100 Overlay Measurement
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What it is

The KLA 5100 Overlay Measurement System is a metrology and inspection tool for measuring overlay on wafers.[2][1]

The KLA 5100 Overlay Measurement System is configured for 8-inch wafers.[2][1]

How it works

The KLA 5100 uses optical microscopes for measurement functions.[1]

The KLA 5100 includes a 12k microscope and a 750 micron field-of-view microscope with a light source, and the 50 micron field-of-view microscope performs optical measurement, interferometer measurement, and autofocus.[1]

Where it fits in the process flow

The KLA 5100 belongs in the metrology and inspection portion of wafer fabrication.[2]

Applications

The KLA 5100 is used for overlay measurement on 8-inch wafers.[2][1]

The KLA 5100 measures steps from 100 Å to 300 µm, and it has a 200 mm sample table with vacuum, a maximum sample thickness of 20 mm, and a minimum sample length of 25 mm.[3]

What do the numbers mean?

Wafer handling1

Dual SMIF Cassette loader, 200mm[1]
Accurate?

Optics & imaging3

Optical system:[1]
Accurate?
12k and 750 micron FOV optical microscopes with light source[1]
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50 micron FOV microscope performs optical measurement, interferometer measurement, and autofocus[1]
Accurate?

Control & software1

Windows NT / VAX software[1]
Accurate?

Configuration & options3

OS
VMS[1]
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SCSI Back up unit[1]
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Thermal mini printer[1]
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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

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Frequently asked questions

What wafer size does the KLA 5100 Overlay Measurement System use?

The KLA 5100 Overlay Measurement System uses 8-inch wafers.[2][1]

What measurement range is given for the KLA 5100?

The KLA 5100 measures steps from 100 Å to 300 µm.[3]

What sample handling features are given for the KLA 5100?

The KLA 5100 has a 200 mm sample table with vacuum, a maximum sample thickness of 20 mm, and a minimum sample length of 25 mm.[3]

Not publicly documented

The following facts about the 5100 Overlay Measurement 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 5100 Overlay Measurement are on record.

    Answerable by: OEM historical records or a trade-press announcement

  • No publicly documented variants, configuration options, or revision breakpoints of the 5100 Overlay Measurement 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 5100 Overlay Measurement 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 5100 Overlay Measurement are on record.

    Answerable by: a field service engineer, process engineer, or maintenance technician

  • The process node or technology generation of the 5100 Overlay Measurement is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

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Sources & citations

Sources (3)Every fact above is drawn from these public sources
  1. [1]inventory listing
  2. [2]KLA 5100 family | Waferpedia — waferpedia.comwaferpedia.com
  3. [3]KLA 5100 Overlay Measurement vs KLA P-15 | Waferpedia — waferpedia.comwaferpedia.com
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Last updated Sep 26, 2026.

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