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Rigaku

MiniFlex

Metrology & InspectionProduced 1973–Rigaku MiniFlex family
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The Rigaku MiniFlex is an X-ray diffraction (XRD) analytical measuring instrument produced by Rigaku. The Rigaku MiniFlex was the first commercial benchtop (tabletop) X-ray diffraction instrument. The Rigaku MiniFlex 600 is a compact benchtop x-ray diffraction system with capabilities including identification of crystalline phases, crystallinity, crystallite size, and crystal structure determination.[1][2]

MiniFlex — Inventory photo
Fig. 01MiniFlexInventory photo[3]

Produced

1973–

Power

450 watts at 30 kV and 15 mA[1]

Optics

1D silicon strip detector[1]

What it is

The Rigaku MiniFlex is an X-ray diffraction analytical measuring instrument. The Rigaku MiniFlex is a benchtop X-ray diffraction instrument. The Miniflex line was introduced in 1973. The current instrument is the fourth in the series.[1]

How it works

The original MiniFlex and its successor employed a horizontal goniometer with data output from an internal strip chart recorder. The MiniFlex+ employed a vertical goniometer. The MiniFlex II offered a monochromatic X-ray source and a 1D silicon strip detector. The later MiniFlex generation introduced in 2017 incorporated a 2D hybrid pixel array detector and an 8-position automatic sample changer.[1]

The MiniFlex 600 is equipped with an automated 6 position sample changer with sample spinning capability. The MiniFlex 600 supports identification of crystalline phases, crystallinity, crystallite size, and crystal structure determination.[2]

Where it fits in the process flow

General reference — not yet source-verified

X-ray diffraction sits in the characterization and failure-analysis portion of a process flow rather than in the main patterning or deposition path. X-ray diffraction is typically used after material formation steps such as deposition, growth, annealing, reaction, or powder preparation. X-ray diffraction results can guide subsequent process tuning, materials selection, or confirmatory analysis by complementary metrology methods.

Applications

The MiniFlex 600 can be used for identification of crystalline phases, crystallinity, crystallite size, and crystal structure determination.[2]

What do the numbers mean?

Power & electrical2

X-ray power (Miniflex+)
450 watts at 30 kV and 15 mA[1]
Accurate?
Power (MiniFlex+)
450 watts, operating at 30kV and 15mA[1]
Accurate?

Optics & imaging3

Detector (Miniflex II)
1D silicon strip detector[1]
Accurate?
Detector (6th generation)
2D hybrid pixel array detector (HPAD)[1]
Accurate?
Detector (6th gen)
2D hybrid pixel array detector (HPAD)[1]
Accurate?

Control & software3

Comes with PC, Chiller, Cables and single sample holder[3]
Accurate?
Software (MiniFlex600)
New PDXL powder diffraction software[1]
Accurate?
Software (6th generation)
Updated SmartLab Studio II software with fundamental parameter method (FP), phase identification using the Crystallography Open Database (COD), and a wizard for ab initio crystal structure analysis[1]
Accurate?

Configuration & options19

Refurbished[3]
Accurate?
Tube power (MiniFlex600)
600 W[1]
Accurate?
Sample changer
6-position automatic sample changer[1]
Accurate?
Sample changer (6th generation)
8-position automatic sample changer[1]
Accurate?
Source (Miniflex II)
Monochromatic X-ray source[1]
Accurate?
Goniometer (original and 2nd generation)
Horizontal goniometer[1]
Accurate?
Goniometer (Miniflex+ and current generation)
Vertical goniometer[1]
Accurate?
Data output (original and 2nd generation)
Internal strip chart recorder[1]
Accurate?
Sample spinning (MiniFlex 600)
Sample spinning capability[2]
Accurate?
Type
X-ray Diffraction (XRD) Analytical Measuring Instrument[1]
Accurate?
Form Factor
Benchtop (tabletop)[1]
Accurate?
Power (MiniFlex600)
600W[1]
Accurate?
Sample Changer (MiniFlex+ and later)
6-position automatic sample changer[1]
Accurate?
Sample Changer (6th gen)
8-position automatic sample changer[1]
Accurate?
Instrument type
X-ray diffractometer / X-ray diffraction (XRD) analytical measuring instrument[3]
Accurate?
Form factor
Compact benchtop X-ray diffraction system[2]
Accurate?
Capabilities
Identification of crystalline phases, crystallinity, crystallite size, and crystal structure determination[2]
Accurate?
Sample handling
Automated 6 position sample changer with sample spinning capability[2]
Accurate?
Historical note
First commercial benchtop (tabletop) X-ray diffraction instrument[1]
Accurate?

Vintage & configurations

  1. 1973Production start[1]

    The original Miniflex was introduced in 1973.

  2. 1973Original MiniFlex introduced[1]

    First commercial benchtop X-ray diffraction instrument introduced

  3. 19762nd generation MiniFlex introduced[1]

    Second generation MiniFlex introduced

  4. 1995MiniFlex+ (3rd gen) introduced[1]

    Third generation MiniFlex+ with 450W power and computer control

  5. 2006MiniFlex II introduced[1]

    Fourth generation with monochromatic X-ray source and 1D silicon strip detector

  6. 2012MiniFlex600 introduced[1]

    Fifth generation with 600W tube power and PDXL software

  7. 20176th generation MiniFlex introduced[1]

    Sixth generation with 2D HPAD detector and 8-position sample changer

  8. 20176th generation introduction[1]

    6th generation MiniFlex was introduced in 2017.

Documented models & variants

DesignationGenerationVintageChangesSource
Miniflexoriginal1973—en.wikipedia.org[1]
MiniFlex II—2006Introduced a monochromatic X-ray source and a 1D silicon strip detector.en.wikipedia.org[1]
MiniFlex6005th generation2012Built upon the line with 600 W tube power and PDXL powder diffraction software.en.wikipedia.org[1]
Original Miniflex1st generation1973About one-tenth the size and dramatically less expensive than conventional X-ray diffraction equipment of the period; employed a horizontal goniometer with data output provided by an internal strip chart recorderen.wikipedia.org[1]
2nd Generation Miniflex2nd generation1976Employed a horizontal goniometer with data output provided by an internal strip chart recorderen.wikipedia.org[1]
6th generation MiniFlex6th generation2017Incorporated a 2D hybrid pixel array detector (HPAD) and an 8-position automatic sample changer; updated SmartLab Studio II software with fundamental parameter method (FP), phase identification using the Crystallography Open Database (COD), and a wizard for ab initio crystal structure analysisen.wikipedia.org[1]
MiniFlex (original)1st generation1973First commercial benchtop X-ray diffraction instrument; horizontal goniometer with strip chart recorderen.wikipedia.org[1]
MiniFlex (2nd generation)2nd generation1976Horizontal goniometer with strip chart recorderen.wikipedia.org[1]
MiniFlex (6th generation)6th generation20172D hybrid pixel array detector (HPAD); 8-position automatic sample changer; SmartLab Studio II software with fundamental parameter methoden.wikipedia.org[1]
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What does it need to run?

Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.

  • X-ray power (Miniflex+)450 watts at 30 kV and 15 mA[1]
  • Power (MiniFlex+)450 watts, operating at 30kV and 15mA[1]

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 kind of instrument is the Rigaku MiniFlex?

The Rigaku MiniFlex is an X-ray diffraction analytical measuring instrument.[1]

Is the Rigaku MiniFlex a benchtop system?

The Rigaku MiniFlex is a benchtop X-ray diffraction instrument.[1]

Does the MiniFlex 600 have automatic sample handling?

The MiniFlex 600 is equipped with an automated 6 position sample changer with sample spinning capability.[2]

Not publicly documented

The following facts about the MiniFlex are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • The control-system platform and OS era of the MiniFlex 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 MiniFlex are on record.

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

  • The process node or technology generation of the MiniFlex is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the MiniFlex are on record.

    Answerable by: an OEM parts catalog or a service engineer

  • No publicly hosted manuals, SOPs, or datasheets for the MiniFlex are on record.

    Answerable by: university cleanroom staff or an OEM application specialist

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Sources & citations

Sources (6)Every fact above is drawn from these public sources
  1. [1]en.wikipedia.org — en.wikipedia.orgen.wikipedia.org
  2. [2]tmi.utexas.edu — tmi.utexas.edutmi.utexas.edu
  3. [3]Inventory photo
  4. [4]Inventory photo
  5. [5]Equipment inventory listing
  6. [6]Equipment inventory listing
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Last updated Oct 15, 2026.

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