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JEOL

DA-1

Metrology & InspectionIntroduced JEOL DA-1 family
Research Quality: 20% complete

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.

JEOLDA-1
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What is it?

The DA-1 is identified in the source as a prototype magnetic field–type electron microscope developed by an early JEOL predecessor group in Japan. The same source states that it was sold to Mitsubishi in 1947.

What can it run?

Process applications and technology nodes documented for this tool.

  • electron microscopy

What do the numbers mean?

Gas & chemistry1

Developer context
developed by an initial group that included Kenji Kazato and Kazuo Ito in Mobara, Chiba Prefecture, Japan[1]
Accurate?

Configuration & options1

Type
prototype magnetic field–type electron microscope[1]
Accurate?
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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.

  • Developer contextdeveloped by an initial group that included Kenji Kazato and Kazuo Ito in Mobara, Chiba Prefecture, Japan[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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Not publicly documented

The following facts about the DA-1 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.

  • Fewer than 3 independently cited specifications for the DA-1 are on record; the remainder await public documentation.

    Answerable by: an OEM datasheet, a cleanroom equipment inventory, or an engineer who operated or installed it

  • No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the DA-1 are on record.

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

  • No publicly documented variants, configuration options, or revision breakpoints of the DA-1 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 DA-1 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 DA-1 are on record.

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

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Sources & citations

Sources (3)Every fact above is drawn from these public sources
  1. [1]en.wikipedia.orgen.wikipedia.orgen.wikipedia.org
  2. [2]#information #jeol | JEOL Ltd.linkedin.comlinkedin.com
  3. [3]電子顕微鏡開発のルーツ「DA-1」がたどった道 日本電子 創立75周年newstsukuba.jpnewstsukuba.jp
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Last updated Jul 29, 2026.

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