Bruce
BDF 41 Diffusion
The Bruce BDF 41 Diffusion Furnace is a horizontal diffusion furnace. The Bruce BDF 41 Diffusion Furnace is configured for 6-inch wafers. The Bruce BDF 41 Diffusion Furnace uses 5-zone heating elements and a four-tube-level configuration.[1][2][3]
What it is
The Bruce BDF 41 is a thermal diffusion furnace for semiconductor wafer processing. The Bruce BDF 41 is configured for 6 inch wafers. The BDF 41 is a four stack diffusion furnace system designed to accept process wafers up to and including 200 mm in diameter.[1][2][3]
How it works
The BDF 41 uses a horizontal furnace architecture with a load station, process tubes, heating elements, and a source cabinet. The BDF 41 main frame accepts a maximum of four heating elements. The BDF 41 furnace section uses 5 zone heating elements. The BDF 41 has a 40 inch thermal flat zone. All tube levels include a quartz process tube sized for processing up to 6 inch diameter wafers. The BDF 41 uses diamond cantilever loaders and controllers, Model DDC-2. The BDF 41 uses SiC paddles on all tube levels. The BDF 41 includes a horizontal laminar flow load station. The BDF 41 includes Model 7355X process controllers. The BDF 41 system control is a distributed control system that uses the 7360 DDC microcontroller as a host with individual microcontroller modules for dedicated control tasks.[1][2][3]
Where it fits in the process flow
General reference — not yet source-verifiedDiffusion furnaces are used in the thermal portion of wafer fabrication after incoming wafer preparation and between pattern transfer and later device formation steps. Diffusion furnaces commonly follow cleaning and precede steps that depend on formed oxide, activated dopants, annealed films, or other thermally conditioned layers. Diffusion furnaces are batch tools, so they fit process flows that value uniform treatment of many wafers through a repeated recipe.
Why won't it start?
Documented failure modes, common issues, and field considerations.
- One source notes that the unit was pulled from working service but could not be fully tested because of lack of power supply.
- One source notes that some spike thermocouples were mostly broken.
- One source notes that a main breaker needed replacing.
What do the numbers mean?
Power & electrical2
- Tube level 1 includes a DirectInject Steam Generator System[1]
Wafer handling7
Configuration & options19
- 5 zone heating elements[1]
- 40" thermal flat zone[1]
- SiC paddles on all tube levels[1]
- Horizontal laminar flow load station[1]
- Model 7355X Process Controllers[1]
- Furnace Configuration[1]
- Tube Level 1 – Wet & Dry Oxidation[1]
- Tube Level 2 – Anneal[1]
- Tube Level 3 – Annealing and Dry Oxidation[1]
Vintage & configurations
- 1993Original year shipped[4]
Original Year Shipped is stated as 1993 for the DBTB-2 configuration.
Documented models & variants
What replaced it?
Alternatives
Tools documented as functional equivalents — same process step and wafer size, from a different manufacturer. Each equivalence cites its source.
- Tokyo Electron Alpha 8 SE— Same function class: Thermal / Diffusion, UnknownCompare in depthsource[5]
What does it need to run?
Site utility requirements, footprint, and infrastructure needed to install and operate this tool. Sourced from public records.
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
No research found yet — worked with this tool? Share what you know.
Frequently asked questions
Is the Bruce BDF 41 a horizontal or vertical furnace?
How many tube levels does the Bruce BDF 41 have?
The Bruce BDF 41 uses a four tube level configuration. The Bruce BDF 41 main frame accepts a maximum of four heating elements.[2][3]
Not publicly documented
The following facts about the BDF 41 Diffusion 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 BDF 41 Diffusion are not on record.
Answerable by: an engineer who operated it or OEM installation records
The process node or technology generation of the BDF 41 Diffusion is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the BDF 41 Diffusion are on record.
Answerable by: an OEM parts catalog or a service engineer
No publicly hosted manuals, SOPs, or datasheets for the BDF 41 Diffusion are on record.
Answerable by: university cleanroom staff or an OEM application specialist
Sources & citations
Sources (5)Every fact above is drawn from these public sources
- [1]Inventory photo
- [2]BDF 41 Diffusion — Bruce | Specs, Sourcing & Service | Waferpedia — waferpedia.comwaferpedia.com
- [3]brucetechnologiesinc.com — brucetechnologiesinc.combrucetechnologiesinc.com
- [4]brucetechnologiesinc.com — brucetechnologiesinc.combrucetechnologiesinc.com
- [5]Equipment inventory listing
Last updated Oct 16, 2026.
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