Waferpedia

Hitachi

Kokusai DJ 825 V 8 BL

Thermal / DiffusionHitachi Kokusai family
Research Quality: 20% complete

The Hitachi Kokusai DJ 825 V 8 BL is a thermal / diffusion furnace. The Hitachi Kokusai DJ 825 V 8 BL is an 8-inch furnace. The Hitachi Kokusai DJ 825 V 8 BL has a low pressure vertical loadlock chamber.[1][2]

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

Power

DJ 825 V 8 BL[2]

Vacuum

Low Pressure Vertical Loadlock Chamber[2]

What is it?

The Hitachi Kokusai DJ 825 V 8 BL is a 8-inch furnace with a low pressure vertical loadlock chamber, described as a batch furnace for 100 wafers and doped poly silicon.

Why won't it start?

Documented failure modes, common issues, and field considerations.

  • Not working

What do the numbers mean?

Power & electrical1

Model
DJ 825 V 8 BL[2]
Accurate?

Vacuum & pumping2

Low Pressure Vertical Loadlock Chamber[2]
Accurate?
Vacuum / pumping
Low Pressure Vertical Loadlock Chamber[1]
Accurate?

Wafer handling1

Wafer size
8 inch[2]
Accurate?

Configuration & options9

Furnace Frame[1]
Accurate?
Batch of 100wfr (oven size)[2]
Accurate?
Doped Poly SI[2]
Accurate?
not working[2]
Accurate?
Manufacturer
Hitachi Kokusai[2]
Accurate?
Category
Thermal / Diffusion[1]
Accurate?
Batch size
Batch of 100wfr (oven size)[1]
Accurate?
Process material
Doped Poly SI[1]
Accurate?
Working status
not working[1]
Accurate?

Vintage & configurations

  1. 1996Vintage[2]

    1996 Vintage

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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.

  • ConfigurationLow Pressure Vertical Loadlock Chamber[2]
  • ModelDJ 825 V 8 BL[2]
  • Vacuum / pumpingLow Pressure Vertical Loadlock Chamber[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 wafer size does the DJ 825 V 8 BL support?

The DJ 825 V 8 BL supports 8 inch wafers.[2][1]

Not publicly documented

The following facts about the Kokusai DJ 825 V 8 BL 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 variants, configuration options, or revision breakpoints of the Kokusai DJ 825 V 8 BL 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 Kokusai DJ 825 V 8 BL are not on record.

    Answerable by: an engineer who operated it or OEM installation records

  • The process node or technology generation of the Kokusai DJ 825 V 8 BL is not on record.

    Answerable by: an OEM datasheet or a fab qualification report

  • No publicly documented compatible parts, consumables, or accessories for the Kokusai DJ 825 V 8 BL are on record.

    Answerable by: an OEM parts catalog or a service engineer

  • No publicly hosted manuals, SOPs, or datasheets for the Kokusai DJ 825 V 8 BL are on record.

    Answerable by: university cleanroom staff or an OEM application specialist

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 7, 2026.

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