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Overview

General comment

48 rack unit (RU), 1400 ampere power distribution busbar assembly for data center racks. Supports 48VDC nominal (40-59.5VDC range) power distribution to IT equipment. Designed for OCP Open Rack V3 and MGX accelerated computing racks. Features blind-mate electrical connections, isolated or hard-grounded chassis options, and integral venting for thermal management.

Technology
Electrical Infrastructure, DC Power Distribution
Geography
Global average data from equipment vendor specifications and industry literature

System boundary

System boundary - MGX Busbar 1400ASystem boundary figure: identity, gate in, entering flows, the dashed system boundary and the unit processes inside it, the reference product, emissions and waste, and below it the flows that are recorded but not quantified. No inventory quantities.MGX Busbar 1400AGATE INRaw materials and sub-componentsENTERING FLOWSElectricityWaterMaterialsSYSTEM BOUNDARYMODELLED PROCESS SEQUENCEProcess sequenceCu primary formingCu shapingAluminum chassis formingSilver platingEpoxy powder coatingBusbar final assemblyREFERENCE PRODUCTMGX Busbar 1400AAssembled and tested componentEMISSIONS AND WASTEEmissions to airEmissions to waterWaste routesRECORDED BUT NOT QUANTIFIEDIn scope, left out of the quantified inventoryCut off below the significance threshold, or with no background dataset available - each is listed with its reason1FLOWsystem boundaryreference flowentering flowemission / waste

The figure groups this dataset's unit processes by class. It is not a count of manufacturing steps — each process runs over as many passes as the flow requires, and those pass counts ship with the dataset.

Download this figure (SVG)

Data quality and references

Composite DQI 2.7 Good
Reliability
3.0
Completeness
4.0
Temporal
2.0
Geographic
2.0
Technological
3.0
How the score is calculated: evaluator-authored model verdict

Pedigree scores follow the ecoinvent data-quality matrix: 1 is the best attainable, 5 the weakest. The composite is their aggregate.

Sampling procedure
Component vendor specifications, academic papers, industry literature
Coverage status
Partial
Pedigree-scored source files
5 — the source records behind this dataset's manufacturing operations. Each carries the five pedigree axes above; the composite DQI aggregates them.

Technosphere inputs

10 flows. Quantities are not published; they ship with the dataset on Circa.

Aluminum 6063 billet Materialkg · ±1.2%
Source citations
  • Castool. (2022). Billet Geometry and Scrap Allocation
Background data
proxy-mapped
Background dataset
aluminium, wrought alloy
Uncertainty
±1.2% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
kg
Copper cathode Materialkg
Source citations
Background data
ecoinvent 3.12
Background dataset
copper, cathode
Uncertainty
No range defined.
Unit
kg
Epoxy powder Materialkg · -16.5% / +25.6%
Source citations
Background data
ecoinvent 3.12
Background dataset
epoxy resin, liquid
Uncertainty
-16.5% / +25.6% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
kg
Forming lubricant Materialkg
Derivation basis
  • Calculated from per-operation consumption, operation counts, and manufacturing yield.
  • REEL derivation: dimensions measured from vendor manual Figures 8-6 and 8-7; mass computed from the measured geometry and the material density
  • REEL derivation: supporting geometry and configuration read from the vendor documentation pages 35-38
  • REEL derivation: engineering estimate of the busbar manufacturing inventory from vendor process descriptions and the measured part geometry; no single published inventory covers this part

The sources for this row are listed below.

Source citations (dataset-level)
  • MGX Accelerated Computing Rack and Trays Specification 1.1
Background data
ecoinvent 3.12
Background dataset
lubricating oil
Uncertainty
No range defined.
Unit
kg
Nickel strike Materialkg · -34.3% / +32.8%
Source citations
Background data
ecoinvent 3.12
Background dataset
nickel, class 1
Uncertainty
-34.3% / +32.8% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
kg
Silver anode Materialkg · ±33.3%
Source citations
Background data
ecoinvent 3.12
Background dataset
silver
Uncertainty
±33.3% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
kg
Silver nitrate Materialkg
Source citations
Background data
proxy-mapped
Background dataset
silver
Notes
Proxy mapping uses 63.5% of the material mass.
Uncertainty
No range defined.
Unit
kg
Sulfuric acid pickle Materialkg · -40% / +100%
Derivation basis
  • Calculated from per-operation consumption, operation counts, and manufacturing yield.
  • REEL derivation: dimensions measured from vendor manual Figures 8-6 and 8-7; mass computed from the measured geometry and the material density
  • REEL derivation: supporting geometry and configuration read from the vendor documentation pages 35-38
  • REEL derivation: engineering estimate of the busbar manufacturing inventory from vendor process descriptions and the measured part geometry; no single published inventory covers this part

The sources for this row are listed below.

Source citations (dataset-level)
  • MGX Accelerated Computing Rack and Trays Specification 1.1
Background data
ecoinvent 3.12
Background dataset
sulfuric acid
Uncertainty
-40% / +100% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
kg
Electricity, Global (GLO) ElectricitykWh · -48% / +73.8%
Derivation basis
  • Calculated from equipment energy across all manufacturing operations. This model includes no facility support, so the total is the manufacturing operations alone.
  • REEL derivation: dimensions measured from vendor manual Figures 8-6 and 8-7; mass computed from the measured geometry and the material density
  • REEL derivation: supporting geometry and configuration read from the vendor documentation pages 35-38
  • REEL derivation: engineering estimate of the busbar manufacturing inventory from vendor process descriptions and the measured part geometry; no single published inventory covers this part

The sources for this row are listed below.

Source citations (dataset-level)
  • MGX Accelerated Computing Rack and Trays Specification 1.1
Background data
ecoinvent 3.12
Background dataset
electricity, medium voltage
Uncertainty
-48% / +73.8% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
kWh
Process water WaterL · -50% / +100%
Derivation basis
  • Calculated from process-water and ultrapure-water demand across all manufacturing operations. This model includes no facility support, so the demand is the manufacturing operations alone. The fresh intake shown is that demand less the share reused under the water-recycling scenario this dataset assumes, and wastewater follows the same balance.

No source is attached to this row.

Source citations
Not stated
Background data
ecoinvent 3.12
Background dataset
tap water
Notes
Water demand from silver plating, adjusted for assembly yield.
Uncertainty
-50% / +100% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
L

Outputs and waste

Wastewater Wastewaterm3 · -50% / +100%
Derivation basis
  • Calculated from the water balance: fresh-water input minus evaporation.

No source is attached to this row.

Source citations
Not stated
Background data
carried, no background dataset
Background dataset
No treatment route recorded for this output.
Uncertainty
-50% / +100% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
m3
Recyclable copper scrap Solid wasteg
Derivation basis
  • Calculated from the mass balance of spent materials and consumables, with treatment selected from the waste classification.

No source is attached to this row.

Source citations
Not stated
Background data
ecoinvent 3.12 treatment route
Background dataset
market for copper scrap, sorted, pressed
Uncertainty
No range defined.
Unit
g
Copper punching slugs Solid wasteg
Derivation basis
  • Calculated from the mass balance of spent materials and consumables, with treatment selected from the waste classification.

No source is attached to this row.

Source citations
Not stated
Background data
ecoinvent 3.12 treatment route
Background dataset
market for copper scrap, sorted, pressed
Uncertainty
No range defined.
Unit
g
Copper burrs, chips, and dust Solid wasteg
Derivation basis
  • Calculated from the mass balance of spent materials and consumables, with treatment selected from the waste classification.

No source is attached to this row.

Source citations
Not stated
Background data
ecoinvent 3.12 treatment route
Background dataset
market for copper scrap, sorted, pressed
Uncertainty
No range defined.
Unit
g
Aluminum extrusion scrap Solid wasteg
Source citations
  • Castool. (2022). Billet Geometry and Scrap Allocation
Background data
ecoinvent 3.12 treatment route
Background dataset
market for aluminium scrap, new
Uncertainty
No range defined.
Unit
g
Anodizing sludge Solid wasteg
Source citations
  • Saunders, F.M. (1988). Reclamation of Aluminum Finishing Sludges. EPA Project Summary
Background data
ecoinvent 3.12 treatment route
Background dataset
treatment of hazardous waste, underground deposit
Uncertainty
No range defined.
Unit
g
Metal-precipitation sludge Solid wasteg
Derivation basis
  • Calculated from the mass balance of spent materials and consumables, with treatment selected from the waste classification.

No source is attached to this row.

Source citations
Not stated
Background data
ecoinvent 3.12 treatment route
Background dataset
treatment of hazardous waste, underground deposit
Uncertainty
No range defined.
Unit
g
Uncured powder overspray Solid wasteg
Derivation basis
  • Calculated from the mass balance of spent materials and consumables, with treatment selected from the waste classification.

No source is attached to this row.

Source citations
Not stated
Background data
ecoinvent 3.12 treatment route
Background dataset
treatment of inert waste, sanitary landfill
Uncertainty
No range defined.
Unit
g
Rejected Assemblies Solid wastekg
Derivation basis
  • Calculated from the mass balance of spent materials and consumables, with treatment selected from the waste classification.

No source is attached to this row.

Source citations
Not stated
Background data
ecoinvent 3.12 treatment route
Background dataset
treatment of inert waste, sanitary landfill
Uncertainty
No range defined.
Unit
kg

Emissions to air

1 elementary flow released to air by this dataset's own operations. Quantities are not published; they ship with the dataset on Circa.

Cure volatile organic compounds Emission to airg
Derivation basis
  • REEL derivation: cure volatile organic compound release is a declared engineering estimate; no retrievable public document was identified for the adopted value
  • No corresponding ecoinvent dataset or flow was identified for this entry, so it is published with its own quantity and no background link

No source is attached to this row.

Source citations
Not stated
Compartment
Air
ecoinvent 3.12 elementary flow
Not stated
Uncertainty
No range defined.
Unit
g

Emissions to water

3 elementary flows released to water by this dataset's own operations. Quantities are not published; they ship with the dataset on Circa.

Silver Emission to waterg
Derivation basis
  • REEL derivation: residual silver discharge after metals precipitation taken as about one percent of the silver input as a declared engineering estimate; no retrievable public document was identified for the adopted value

No source is attached to this row.

Source citations
Not stated
Compartment
Water (surface water)
Formula
Ag+
CAS number
14701-21-4
ecoinvent 3.12 elementary flow
Silver I
Uncertainty
No range defined.
Unit
g
Nickel Emission to waterg
Derivation basis
  • REEL derivation: nickel release to the plating rinse stream is a declared engineering estimate; no retrievable public document was identified for the adopted value

No source is attached to this row.

Source citations
Not stated
Compartment
Water (surface water)
Formula
Ni2+
CAS number
14701-22-5
ecoinvent 3.12 elementary flow
Nickel II
Uncertainty
No range defined.
Unit
g
Sulfate Emission to waterg
Derivation basis
  • REEL derivation: sulfate release to the plating rinse stream is a declared engineering estimate; no retrievable public document was identified for the adopted value

No source is attached to this row.

Source citations
Not stated
Compartment
Water (surface water)
Formula
SO42-
CAS number
14808-79-8
ecoinvent 3.12 elementary flow
Sulfate
Uncertainty
No range defined.
Unit
g

Flows not quantified

1 flow is recorded for this dataset but carries no quantity — cut off below the significance threshold, or with no background dataset available. It remains inside the declared system boundary; each is listed with its reason.

Not modelled (1)

5,5-Dimethylhydantoin (DMH) complexant Materialkg · -33.4% / +33.3%
Source citations
Background data
not modelled
Background dataset
Not applicable: this flow is not quantified in the inventory.
Reason
The quantified material is retained, but its authored name does not identify a sufficiently specific background dataset or defensible proxy; background modeling remains an explicit gap.
Uncertainty
-33.4% / +33.3% around the published quantity. The bounds themselves ship with the dataset on Circa.
Unit
kg

The flows above are this dataset's own records. What follows are the scope rules set once for the whole database in the methodology report, repeated here so every dataset page carries them.

Database-wide boundary policy — applies to every REEL dataset

These boundaries are set once for the whole database, in Chapter 2 of the methodology report, and apply to this dataset wherever they are relevant to it. The excluded flows listed above are specific to this dataset.

Use phase
Product operation is outside the cradle-to-gate scope.
End-of-life treatment
Recycling and disposal are outside the cradle-to-gate scope.
Distribution and retail
The gate is a finished component ready for integration into a higher-level assembly.
Inbound transport of raw materials
Transport of purchased raw materials to the manufacturing facility is already inside the upstream "market for" datasets that users link to a background database, so it is not modelled a second time here. This does not cover freight between REEL production stages, which is modelled where a dataset authors it.
Returnable shipping containers
Where freight between production stages is modelled, the mass moved is the product itself. The shipping container (FOSB, SEMI M31) is returnable capital equipment whose per-trip share is unsourced, so its tare is excluded from the transport effort.
Photomask fabrication
A mask set's embodied burden is amortised across a high-volume production run and is not attributed per wafer. Users assessing low-volume production should add mask fabrication separately; the methodology report gives the basis for the exclusion.
Employee transport, administration and R&D overhead
Employee transportation, facility administration and R&D/pilot-production overhead are outside scope.
Capital goods
Manufacturing equipment, cleanroom construction and facility infrastructure are excluded, on the grounds of absent public data on equipment embodied energy, uncertainty in equipment lifetime and allocation, common practice in electronics LCA, and a focus on the operational inventory. Future versions may include capital goods when sufficient public data becomes available.
Precious metal recovery credits
Scrap recovery credits for precious metals are excluded pending data availability.
Wafer reclaim
Test wafers and scrap are outside the system boundary.

Inside the boundary, linked rather than modelled

Silicon ingot growth and wafer slicing
Inside the cradle-to-gate scope, but treated as upstream material inputs linked to background databases rather than modelled as REEL processes.
Freight between production stages
Where a dataset's product moves between REEL production stages - wafer fabrication to the packaging site, for example - that leg is authored as a transport service and linked to an ecoinvent freight activity. It is measured as a transport effort in tonne-kilometres, not as a mass. Route distances are authored per route class with a stated band; a lower bound of zero is a modelling statement that the two sites can be co-located, not a missing value.

Cut-off criteria

A flow is excluded from a process inventory when it contributes less than 1 % of the total mass of inputs to that unit process, or less than 1 % of its total energy input. The denominator is total process inputs, not product mass. That distinction matters in semiconductor manufacturing, where the input mass of water, chemicals and gases greatly exceeds the product mass, so the threshold removes only genuinely minor flows.

Included regardless of the cut-off

  • Perfluorocarbons (CF4, C2F6, SF6, NF3) - high GWP, EPA regulated
  • Heavy metals (Pb, Cd, Hg, Cr(VI)) - RoHS regulated, high toxicity
  • Volatile organics (photoresist solvents, PGMEA) - air quality
  • Precious metals (Au, Ag, Pd, Pt) - high embodied impacts
  • Ozone-depleting substances (legacy CFCs, HCFCs) - Montreal Protocol