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## Custom Superconducting Wire

Most fabricators stock NbTi in standard gauges. When your experiment needs Nb3Sn at a specific critical temperature, or YBCO tape conductor, or a research alloy your lab developed—they say no.

We say yes, and we manufacture it to order.

CryoWeave produces custom superconducting wire in any alloy type, any gauge, small batch quantities. Need 50 meters of NbTi optimized for 1.5K operation? Done. Need YBCO tape conductor integrated into a mixed assembly? Done.

Every wire is tested for critical temperature and current before integration. You don't discover problems at first cooldown.

### Specifications

- Alloy types: NbTi, Nb3Sn, Nb, YBCO, MgB2, research alloys
- Custom critical temperature specifications
- Any gauge from 32 AWG to multi-strand
- Small batch quantities (no 1000m minimum)
- Integrated or dedicated wire assemblies
- Cryogenic performance testing included

## Handwoven Mixed-Type Assemblies

### Why Handweaving Matters

- Reduce feedthrough count by 50-75%
- Minimize thermal conduction paths
- Custom twist configurations (including reverse)
- Integrated shielding where needed
- Universal connector compatibility
- Precise length control for phased arrays

Your dilution refrigerator has limited feedthrough ports. Running separate cables for DC power, RF signals, and sensor readout means three penetrations—three thermal leak paths, three vacuum seals, three mechanical points of failure.

A handwoven mixed-type assembly puts all three in one cable.

Superconducting wire for DC power. Coax for RF. Twisted pair for sensors. Woven together with custom geometry, integrated shielding, and the exact twist configuration your experiment needs.

CryoWeave has been weaving mixed assemblies for space missions for 20 years. We know which configurations minimize crosstalk, which twist patterns reduce microphonics, and how to terminate dissimilar conductors without thermal stress failures.

Custom configurations we handle: Reverse twist (cancels magnetic pickup), coax + twisted pair interwoven, superconducting shield over signal bundle, phase-matched RF pairs for detector arrays, custom break-out harnesses at temperature stages.

## Integrated Thermal Management

Standard practice: run your cables, then add thermal bleed-off stages afterward. Machine custom copper plates. Drill mounting holes. Thread cables. Solder thermal anchors. Hope the geometry works.

CryoWeave integrates thermal management into the assembly.

Custom copper plates mounted at your specified temperatures (4K, 1K, 100mK, whatever your cryostat needs). Cables pre-routed through thermal anchors. Pre-calculated heat load budgets. Mechanical strain relief included.

Result: 10× faster installation, 50-75% lower heat load, zero geometry surprises.

### Thermal Solutions

- Built-in bleed-off plates at any temperature
- Custom stage count and positioning
- Heat load calculations included
- Optimized cable routing for minimal conduction
- Mechanical strain relief at each stage
- Compatible with standard cryostat geometries

Why it matters: Every watt of heat leaking down your cables costs helium. In a dilution refrigerator, every microwatt at the mixing chamber costs cooling power. Integrated thermal management isn't about convenience—it's about whether your experiment reaches base temperature.

## Precision Coaxial Assemblies

### Coax Capabilities

- Non-standard semi-rigid (custom impedances)
- Micro-coax for high-density detector arrays
- Phase-matched pairs for interferometry
- SMT terminations for direct PCB mounting
- Cryogenic-grade dielectrics
- Custom connector combinations

Standard catalog coax: 50Ω, SMA connectors, room-temperature dielectric. Works fine for RF labs. Doesn't work for bolometer arrays operating at 100mK where you need 75Ω micro-coax with phase-matched pairs and SMT terminations.

CryoWeave fabricates custom coax for cryogenic environments.

Non-standard impedances (not just 50Ω). Cryogenic-grade dielectrics that don't crack at 4K. Phase-matching to sub-degree precision for detector arrays. SMT terminations that mount directly to your readout boards.

We handle the combinations other shops won't quote: SMP to LEMO. Reverse-gender SMA to custom PCB launch. Micro-coax bundles with individual shields.

## Space-Grade Standards, Every Assembly

Whether you're building a dark matter detector or a satellite cryostat, every CryoWeave assembly meets IPC J-STD-001ES space applications standards, IPC-A-610 Class 3 inspection criteria, and IPC/WHMA-A-620 cable fabrication requirements. Because research can't afford to fail.

## Technical Specifications

### Temperature Range

Millikelvin to 300K operation

Assemblies tested for thermal cycling between room temperature and your operating point. Materials selected for CTE matching and cryogenic reliability.

### Lead Times

60-day custom delivery

From approved drawings to shipped assembly. Faster turnaround available for critical deadlines. Small batch orders don't wait behind production runs.

### Quality Control

Space-grade inspection

100% visual inspection to IPC-A-610 Class 3. Continuity testing on every conductor. Cryogenic performance verification where applicable.

## What We Don't Do

CryoWeave doesn't do mass production. If you need 10,000 identical assemblies on a six-month production schedule, we're not the right fabricator. We're optimized for complexity, not volume.

We don't do consumer electronics. If your product needs to be manufactureable at scale in China, we're not your vendor. We're optimized for one-offs and small batches where precision matters.

We don't do room-temperature-only assemblies. If your application never sees cryogenic temperatures, standard fabricators will be faster and cheaper. We're optimized for the thermal, mechanical, and electrical challenges of millikelvin environments.

We do custom cryogenic assemblies that other fabricators reject. That's our entire focus.