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COMPANY RESEARCH · Enabling technology

Delft Circuits

Supplies Cri/oFlex wiring intended to carry signals into cryogenic quantum hardware.

Official website ↗
Netherlands · Research brief reviewed 23 Sept 2026

Initial record: initial research brief recorded.

Review history 1 record

Record dates use UTC and show when an assessment or clarification was saved. Review dates show the evidence check. Earlier records were recovered from QubitWire’s source history; no earlier score movement is inferred.

  1. Initial research brief recorded

    Research reviewed 23 Sept 2026

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    Sources in this record (1)
Identity & attribution
Organization record
Delft Circuits (organization-111)
Recorded role
Enabling Technologies, Cloud & Infrastructure
Recorded aliases
No aliases recorded in this assessment.
Name and period
No dated name or ownership transition is recorded here. An alias is a search aid, not evidence of a legal ownership relationship.
Product scope
Flexible superconducting microwave interconnects and integrated cryogenic filtering.

A company profile may discuss several systems. Capabilities remain attached to the product and conditions named in each source; they do not transfer automatically to related organizations. A verified security relationship has not been attached to this record.

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Company evidence and analysis

Dated company evidence, its limits and the next test to follow. These notes do not change a QRank score.

Delft CircuitsCryogenic interconnects and flexible wiring

Sources reviewed 20 Oct 2026. Event dates remain attached to the original evidence.

Delft Circuits announced an €8 million financing extension in December 2025, bringing the referenced financing total to €15 million. Its cryogenic wiring work addresses interconnects inside quantum installations. The historical funding event is context for an infrastructure profile, not October 2026 breaking news.

Wiring is a useful place to see how quantum-system scale becomes an engineering problem. Each connection must carry a suitable signal while adding manageable heat and fitting into a serviceable physical arrangement. A thinner or denser cable can be valuable, but it should be compared at equal electrical performance and operating temperature. Compare insertion loss, crosstalk, thermal load and mechanical reliability together, including the connectors and transitions actually used. The buyer also needs to know whether a replacement or expansion can be made without disturbing the rest of the installation. The strongest next evidence would come from repeated customer operation through thermal cycles, with failures and maintenance included. That would show whether an interconnect reduces total integration effort rather than simply moving the burden to another part of the system. Funding and production plans should remain separate from those observed outcomes.

For a reader evaluating Delft Circuits, the practical question is whether higher wiring density preserves signal quality and meets the cryostat’s thermal budget. A useful next evidence check is specific: compare channel density, insertion loss, crosstalk, stage heat load and mechanical reliability in a realistic installation. Dense wiring can create thermal or signal-integrity tradeoffs that a simple cable-count headline misses. These are proposed tests for judging a later update, not claims that the company has already passed them.

Security status: No public security verified in reviewed material; directory/watch profile only

Facts, comparisons and next evidence

At a glance

Quantum role
Cryogenic wiring and interconnects
Source published
2025-12-03
Assessment action
Research context added; published score unchanged

Dated milestones

  • date
    2025-12-03
    Date scope
    Source publication date
    event
    Financing extension disclosed
    status
    Published primary source
    What this does not establish
    Dense wiring can create thermal or signal-integrity tradeoffs that a simple cable-count headline misses.

Quantum role

layer
Cryogenic wiring and interconnects
Question
Whether higher wiring density preserves signal quality and meets the cryostat’s thermal budget.

Questions for comparison

  • Electrical performance with connectors included
  • Thermal load and channel density
  • Thermal-cycle and service reliability

Related approaches

  • name
    Bluefors
    relationship
    Proposed comparison of relevant dimensions; not a claim of equivalent products or a ranking
    dimensions
    • Electrical performance with connectors included
    • Thermal load and channel density
    • Thermal-cycle and service reliability
  • name
    YQuantum
    relationship
    Proposed comparison of relevant dimensions; not a claim of equivalent products or a ranking
    dimensions
    • Electrical performance with connectors included
    • Thermal load and channel density
    • Thermal-cycle and service reliability

Limits and missing evidence

  • Dense wiring can create thermal or signal-integrity tradeoffs that a simple cable-count headline misses.
  • Customer-installed configuration and acceptance
  • Long-run thermal-cycle reliability
  • Current financing update before claiming a new round

What evidence would resolve the open question

Evidence to look for
Compare channel density, insertion loss, crosstalk, stage heat load and mechanical reliability in a realistic installation.
Evidence needed
Dated primary technical report, product specification or customer/issuer disclosure directly answering the test.
How to assess it
Identify the configuration, time boundary and measured outcome; retain unsuccessful attempts and stated limitations.
Limit
Dense wiring can create thermal or signal-integrity tradeoffs that a simple cable-count headline misses.

A starting question

question
Why do quantum cables need more than a bandwidth specification?
answer
They also carry heat into cold equipment and must survive installation and temperature changes. Compare the complete connection, including connectors, for signal quality, thermal load and reliability under the same operating conditions.
Original sources and scope
  1. Delft Circuits announces financing extension ↗Source dated 3 Dec 2025

    Header Dec2/dateline Dec3. €8m extension brings announced financing to €15m; planned 2026 round is not completed.

Delft CircuitsPrivate industry context; no public security added

Sources reviewed 20 Oct 2026. Event dates remain attached to the original evidence.

Announced or reported: Delft Circuits reported an €8 million extension bringing the referenced financing to €15 million.

Still conditional: A planned 2026 financing is not treated as completed; the December event is not breaking news at this cutoff.

The useful update is a manufacturing and qualification watch rather than a recycled funding headline. Cryogenic interconnect suppliers need repeatable electrical and thermal performance across products that survive installation and thermal cycling. The business evidence should therefore connect production expansion to accepted customer configurations, failure rates and lead times. A useful card also asks whether growth comes from repeatable standard assemblies or labor-intensive custom designs. The next reporting milestone should show how a financing-supported production change affected those outcomes. Funding totals must retain their original scope: an extension and the total containing it are not separate amounts to add. This creates a substantive infrastructure view of the quantum sector while recognizing that a private supplier’s cash flow and profitability may remain undisclosed.

Keep an extension inside its round history and check planned later rounds independently. The concrete next evidence is: a dated completed financing notice and product evidence showing thermal and signal-integrity performance. Plans for future financing do not establish a completed close or available capital. This watch record should change when that evidence changes, with the original event and reporting period preserved so readers can distinguish a new outcome from a refreshed page.

Facts, comparisons and next evidence

At a glance

Commercial evidence stage
Funding extension
Catalyst date
2025-12-03
Security treatment
Private/industry watch; no verified public security

Dated milestones

  • date
    2025-12-03
    event
    Historical financing extension and production watch
    status
    Funding extension
    Remaining condition
    See this card’s remaining-condition panel for the complete unresolved scope.

Cash and revenue boundary

Question
Keep an extension inside its round history and check planned later rounds independently.
risk
Plans for future financing do not establish a completed close or available capital.
realized or announced
See this card’s announced-fact panel; the complete source-backed state is recorded there once.
still conditional
See this card’s remaining-condition panel; keep its qualifications attached to the fact.

What evidence would resolve the open question

Evidence needed
A dated completed financing notice and product evidence showing thermal and signal-integrity performance.
How to assess it
Keep an extension inside its round history and check planned later rounds independently.
Limit
Plans for future financing do not establish a completed close or available capital.

Basis for comparison

dimensions
  • Close hierarchy
  • product qualification
  • customer concentration
rule
Compare the same period, currency, instrument or contract status. Unknown values stay blank; no cross-company score is supplied.

Limits and missing evidence

  • Plans for future financing do not establish a completed close or available capital.
  • Is a historical funding event being republished as current?
  • Does cable density come with higher failure or integration costs?

Measures to follow

  • Accepted assemblies and thermal-cycle reliability
  • Lead time and manufacturing yield
  • Standard/custom product mix

Documents still needed

  • Current financing status
  • Customer qualification and repeat orders
  • Production capacity versus accepted output

Reporting currency

EUR
Original sources and scope
  1. Delft Circuits announces financing extension ↗Source dated 3 Dec 2025

    Header Dec2/dateline Dec3. €8m extension brings announced financing to €15m; planned 2026 round is not completed.

TECHNOLOGY & ACCESS

What it does. Where it fits.

Flexible superconducting microwave interconnects and integrated cryogenic filtering.

Who should look closer

Laboratories and system builders evaluating cryostat wiring density and thermal budgets.

QubitWire’s editorial assessment of practical fit.

Direct hardware supply

Select interconnect configuration with the supplier for the target cryostat and signal requirements.

Check the current access route ↗
DOCUMENTED EVIDENCE

What the sources establish

The current Cri/oFlex platform combines superconducting flexible cabling with filtering and connection options.

delft-circuits.com ↗

What remains unresolved

Thermal load, attenuation and channel density depend on the full assembly. A wiring product does not by itself demonstrate processor performance or scalable error correction.

The next question to watch

Published measurements of installed assemblies under realistic thermal and signal loads.

A research question, not a promised milestone.

QubitWire coverage

No published QubitWire stories currently match this organization. The evidence sources below provide the starting point.

Open research questions

Editorial questions for this profile. No reviewed closure decision has been recorded; unanswered questions do not lower the official score.

Open research question

Published measurements of installed assemblies under realistic thermal and signal loads.

What evidence would help

A source addressing this question must identify the named system, experiment or deployment, its conditions, measured outcome and remaining limitations. Are performance limits stated under realistic loads and operating conditions?

What would resolve it?

An editorial review must explain which part of this question the evidence resolves. A roadmap or an announcement alone does not close it.

No resolved, partial or disputed outcome is asserted without a reviewed transition and its evidence.

Suggest evidence
Open research question

Which named system or service can I use under the documented access route?

What evidence would help

Check the current terms for direct hardware supply. Identify the system version, eligibility, restrictions and whether the result used hardware or simulation.

What would resolve it?

Current primary documentation must identify the offering, eligible user and access conditions. An unspecified company-level access claim is insufficient.

No resolved, partial or disputed outcome is asserted without a reviewed transition and its evidence.

Suggest evidence
Open research question

Are performance limits stated under realistic loads and operating conditions?

What evidence would help

Provide the source location, relevant product or generation, workload, resource constraints and reported uncertainty. Keep measurements, simulations and announced targets distinct.

What would resolve it?

A source reviewer must map the evidence to this exact scope. Missing disclosure remains unknown; it is not technical failure.

No resolved, partial or disputed outcome is asserted without a reviewed transition and its evidence.

Suggest evidence

Questions are drawn from the existing brief and sector reading guide. Research brief reviewed 23 Sept 2026. Following stores a local bookmark; it does not send email alerts or imply a scheduled review.

Since your review

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CHECK THE ORIGINALS

Sources & evidence

  1. Delft Circuits announces financing extension ↗Company primary announcement · 3 Dec 2025

    The useful update is a manufacturing and qualification watch rather than a recycled funding headline. Cryogenic interconnect suppliers need repeatable electrical and thermal performance across products that survive installation and thermal cycling. The business evidence should therefore connect production expansion to accepted customer configurations, failure rates and lead times. A useful card also asks whether growth comes from repeatable standard assemblies or labor-intensive custom designs. The next reporting milestone should show how a financing-supported production change affected those outcomes. Funding totals must retain their original scope: an extension and the total containing it are not separate amounts to add. This creates a substantive infrastructure view of the quantum sector while recognizing that a private supplier’s cash flow and profitability may remain undisclosed.

  2. Delft Circuits Cri/oFlex ↗Company technical disclosure · Publication date not stated

    Describes superconducting flexible cabling and cryogenic integration products.