Waferpedia

Tokyo Electron

Alpha 805 D

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What it is

General reference — not yet source-verified

The Tokyo Electron Alpha 805 D is a thermal diffusion furnace.

How it works

General reference — not yet source-verified

A thermal diffusion furnace processes wafers in a heated tube or chamber to drive heat treatment reactions across the wafer surface and through shallow subsurface regions.

A diffusion furnace classically supports batch thermal processing for semiconductor wafers, where temperature and ambient composition control drive steps such as oxidation, diffusion, annealing, and similar heat-based operations.

Where it fits in the process flow

General reference — not yet source-verified

A diffusion furnace is generally used after front-end wafer preparation steps that require elevated-temperature treatment and before later patterning or back-end integration steps.

Applications

The Alpha 805 D is a thermal or diffusion tool for 8-inch wafer processing.[2][1]

What do the numbers mean?

Wafer handling1

Wafer size
8 inch[1]
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Configuration & options5

PIQ[1]
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Manufacturer
Tokyo Electron[1]
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Model
Alpha 805 D[2]
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Equipment type
Furnace[1]
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Category
Thermal / Diffusion[1]
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Where are the manuals?

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Not publicly documented

Field notes

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Frequently asked questions

What type of equipment is the Tokyo Electron Alpha 805 D?

The Tokyo Electron Alpha 805 D is a furnace in the thermal or diffusion category.[1][2]

What wafer size does the Tokyo Electron Alpha 805 D support?

The Tokyo Electron Alpha 805 D supports 8-inch wafers.[1][2]

Who made the Alpha 805 D?

The Alpha 805 D was made by Tokyo Electron.[1]

Not publicly documented

The following facts about the Alpha 805 D 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 Alpha 805 D are on record.

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

  • No publicly documented variants, configuration options, or revision breakpoints of the Alpha 805 D 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 Alpha 805 D 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 Alpha 805 D are on record.

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

  • The process node or technology generation of the Alpha 805 D is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

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Sources & citations

Sources (2)Every fact above is drawn from these public sources
  1. [1]waferpedia.com — waferpedia.comwaferpedia.com
  2. [2]Equipment inventory listing
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Last updated Oct 16, 2026.

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