Waferpedia

Tokyo Electron

Formula Vertical

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.

Tokyo Electron logo
Fig. — Manufacturer logo, not a photo of this toolWikimedia Commons (see file page for license)

What it is

The Tokyo Electron Formula is a vertical diffusion furnace. The Formula is configured for 300 mm (12 inch) wafers. The machine is categorized as a thermal / diffusion tool.[1][2][3][4][5][6]

How it works

General reference — not yet source-verified

A vertical furnace operates by placing wafers vertically on a quartz boat that is loaded into a heated quartz tube from below. The tube is surrounded by resistive heating elements divided into multiple zones to maintain a precisely controlled temperature profile across the wafer batch. Process gases are introduced at the top of the tube and flow downward over the wafers, while exhaust is removed from the bottom. The system can operate at atmospheric or reduced pressure, enabling low-pressure CVD (LPCVD) processes.

Applications

General reference — not yet source-verified

Vertical diffusion furnaces are used for a variety of thermal processes including thermal oxidation, low-pressure chemical vapor deposition of silicon nitride, polysilicon, and silicon dioxide, as well as dopant diffusion and annealing. The equipment can be configured for different chemistries depending on the desired film type.

What do the numbers mean?

Wafer handling2

Wafer size
300 mm (12 inch)[3]
Accurate?
Wafer size (alternate listing)
12 INCH[4]
Accurate?

Configuration & options5

Manufacturer
Tokyo Electron[1]
Accurate?
Model
Formula[1]
Accurate?
Category
Thermal / Diffusion[2]
Accurate?
Description
Vertical Diffusion Furnace[3]
Accurate?
Available process types
ALD HIGH K(H TYPE), DCS SiN, DCS/NH3/HF/F2, TEOS/HF/F2, DCS SiN(H TYPE), DCS SiN(M TYPE), H TYPE, Teos(H TYPE)[5]
Accurate?

Vintage & configurations

Documented models & variants

DesignationGenerationVintageChangesSource
FORMULA VERTICAL FURNACE, ALD HIGH K(H TYPE) PROCESS——configured for ALD high-k (H type) processfabsurplus.com[5]
FORMULA VERTICAL FURNACE, DCS SiN PROCESS——configured for DCS SiN (silicon nitride) processfabsurplus.com[5]
FORMULA Vertical Furnace, DCS/NH3/HF/F2——configured for DCS/NH3/HF/F2 chemistryfabsurplus.com[4]
FORMULA VERTICAL FURNACE, TEOS/HF/F2 PROCESS——configured for TEOS/HF/F2 processfabsurplus.com[5]
FORMULA VERTICAL FURNACE, DCS SiN(H TYPE) PROCESS——configured for DCS SiN (H type) processfabsurplus.com[5]
FORMULA VERTICAL FURNACE, DCS SiN(M TYPE) PROCESS——configured for DCS SiN (M type) processfabsurplus.com[5]
FORMULA VERTICAL FURNACE, H TYPE PROCESS——configured for H type processfabsurplus.com[5]
FORMULA VERTICAL FURNACE, Teos(H TYPE) PROCESS——configured for Teos (H type) processfabsurplus.com[5]
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Where are the manuals?

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Not publicly documented

Field notes

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Frequently asked questions

Is the Formula a horizontal or vertical furnace?

The Formula is a vertical furnace.[1][3]

What is the category of the Formula?

The Formula is categorized as a thermal / diffusion tool.[2]

Not publicly documented

The following facts about the Formula Vertical 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 Formula Vertical are on record.

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

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

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

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

    Answerable by: an OEM datasheet or a fab qualification report

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

    Answerable by: an OEM parts catalog or a service engineer

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Sources & citations

Sources (6)Every fact above is drawn from these public sources
  1. [1]Equipment inventory listing
  2. [2]waferpedia.com — waferpedia.comwaferpedia.com
  3. [3]fabsurplus.com — fabsurplus.comfabsurplus.com
  4. [4]fabsurplus.com — fabsurplus.comfabsurplus.com
  5. [5]fabsurplus.com — fabsurplus.comfabsurplus.com
  6. [6]TEL TOKYO ELECTRON FORMULA VERTICAL FURNACE ,DCS SiN PROCESS for sale — fabsurplus.comfabsurplus.com
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Last updated Oct 2, 2026.

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