Ultrasound Probe Cable

Ultrasound Probe Cable — Phase-Matched 128 to 512 Channel Micro Coaxial Assemblies for OEM Probe Manufacturers, 42/44 AWG, 50 Ω ePTFE micro coaxial. OEM manufacturer for GE, Philips, Siemens, Mindray. TDR certificate per channel.

Ultra-Fine Gauge × Ultra-High Core Density

ePTFE Low-Loss Dielectric Technology

Dual-Layer Shielding — Channel Isolation >40 dB

High-Flex — 1M Flex / 5M Torsion Cycles

ISO 9001 Certified · Fast Turnaround · Full Customization

Phase Matching ±1% — 100% TDR Verified

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Specialty Cable Assemblies

Ultrasound Probe Cable

The Ultrasound Probe Cable is the most performance-critical interconnect in any diagnostic ultrasound system. It carries analog echo signals from 128 to 512 individual transducer elements to the beamformer — a distance of 1.5 to 3.0 meters — where each channel must arrive with matched propagation delay within ±1% for accurate image reconstruction.

We are an OEM manufacturer of ultrasound probe cables, producing phase-matched bundled micro coaxial assemblies for probe manufacturers worldwide. Our cables use 42 or 44 AWG silver-plated conductors with ePTFE dielectric (Dk ≈ 1.45), achieving the lowest capacitance and highest velocity of propagation available in micro coaxial construction. Every assembly ships with per-channel TDR phase-match certificate and 100% electrical test records.

Product Range

Product	Gauge	Channels	Bundle OD	Phase Match	Application
Standard probe cable	42AWG	128	7.2 mm	±1.0%	2D cardiac, abdominal, OB
High-channel probe cable	42AWG	192–256	8.5–9.6 mm	±1.0%	3D cardiac, high-res linear
High-density probe cable	44AWG	256	7.8 mm	±0.5%	3D/4D volumetric
Matrix array cable	44AWG	512	11.2 mm	±0.5%	Real-time 3D matrix
TEE probe cable	44AWG	64–128	4.3–5.8 mm	±1.0%	Transesophageal
Compact/portable cable	44AWG	64–128	4.3–5.8 mm	±1.0%	Point-of-care, handheld
Replacement/second-source	42/44AWG	Per orig	Per orig	Per orig	GE, Philips, Siemens match

Technical Specifications

Parameter	42 AWG (Standard)	44 AWG (High-Density)
Conductor	0.064 mm Ag-plated CuAg	0.051 mm Ag-plated CuAg
Construction	7-strand (std) / 19-strand	7-strand / 19-strand
Dielectric	ePTFE, Dk ≈ 1.45	ePTFE, Dk ≈ 1.45
Element OD	0.48 mm ± 0.02 mm	0.38 mm ± 0.02 mm
Impedance	50 Ω ± 2 Ω	50 Ω ± 2 Ω
Capacitance	≤ 95 pF/m	≤ 110 pF/m
VoP	≥ 78%	≥ 78%
Phase match	±1.0% (std) / ±0.5% (prem)	±0.5% standard
Shield	Foil 100% + Ag braid ≥ 85%	Foil 100% + Ag braid ≥ 82%
Crosstalk isolation	> 40 dB at 10 MHz	> 38 dB at 10 MHz
Flex life (7-strand)	> 500K at 30 mm	> 500K at 25 mm
Flex life (19-strand)	> 1M at 25 mm	> 1M at 20 mm
Jacket	PUR / PFA	PUR / PFA
Biocompatibility	ISO 10993-5/10 (PFA option)	ISO 10993-5/10 (PFA option)
Cable length range	1.5–3.0 m	1.5–2.5 m
Biocompatibility	ISO 10993-5/10 (PFA option)	ISO 10993-5/10 (PFA option)
Cable length range	1.5–3.0 m	1.5–2.5 m

Platform Compatibility

We manufacture probe cables matching the specifications used in all major diagnostic ultrasound platforms. Cable assemblies are verified against original specifications through TDR measurement, dimensional inspection, and 100% electrical testing.

Supported platforms: GE Healthcare (Logiq, Voluson, Vivid), Philips (EPIQ, Affiniti, ClearVue), Siemens (ACUSON Sequoia, Juniper), Mindray (Resona, DC series), Samsung Medison (HS, RS), Canon/Toshiba (Aplio, Xario), Hitachi (ARIETTA, LISENDO), and custom OEM platforms.

Disclaimer: We are an independent cable manufacturer. Platform names identify compatibility only. We are not affiliated with or endorsed by any platform manufacturer.

Why ePTFE Dielectric Is Critical for Ultrasound Probe Cable

The dielectric material determines three parameters that directly affect ultrasound image quality:

Capacitance — ePTFE (Dk 1.45) achieves ≤ 95 pF/m at 42 AWG, versus 120+ pF/m for FEP (Dk 2.1) or PE (Dk 2.25). Lower capacitance means less signal attenuation at ultrasound frequencies (1–20 MHz) and better signal-to-noise ratio at the beamformer input.

Velocity of Propagation — ePTFE achieves ≥ 78% VoP, versus 69% for FEP. Higher VoP means shorter electrical length per meter of physical cable, which reduces time-delay errors in the beamformer.

Dk Uniformity — ePTFE microporous structure allows tighter Dk control across a production lot (±0.05) compared to solid dielectrics (±0.10–0.15). This Dk uniformity is the foundation of phase matching — without it, even cables cut to identical physical lengths will have different electrical lengths.

For these reasons, ePTFE is the standard dielectric for phase-matched ultrasound probe cables. FEP is acceptable only for non-phase-matched Applications or cost-sensitive designs where image quality tradeoffs are acceptable.

Cable Flex Life and Probe Longevity

Cable flex fatigue is the number one cause of ultrasound probe retirement. The probe cable undergoes repeated bending during every scan as the clinician manipulates the transducer. Over thousands of scans per year, conductor strands fracture, shielding degrades, and eventually channels fail — producing dropout lines in the ultrasound image.

Conductor Construction	Flex Life at 30 mm Radius	Clinical Translation	Recommended For
Solid	~50,000 cycles	~1 year at moderate use	Not recommended for probe cables
7-strand	~500,000 cycles	~5–7 years at moderate use	Standard clinical probes
19-strand rope-lay	~1,000,000+ cycles	~8–12+ years at moderate use	Premium probes, high-use facilities
7-strand	~500,000 cycles	~5–7 years at moderate use	Standard clinical probes
19-strand rope-lay	~1,000,000+ cycles	~8–12+ years at moderate use	Premium probes, high-use facilities

"Moderate use" = approximately 50–100 scans per day, each scan involving 50–100 flex cycles at the cable-to-probe junction.

Our standard ultrasound probe cable uses 7-strand construction (adequate for 5–7 year probe life). 19-strand rope-lay is available for premium probes or high-volume facilities where maximizing probe service life justifies the 30–40% cable cost increase.

Documentation Package

Every ultrasound probe cable assembly ships with:
- Certificate of Conformance (CoC) — per lot, referencing customer PO and cable specification
- 100% Electrical Test Records — per serial number: continuity, TDR impedance per channel, HiPot 500V DC, insulation resistance ≥ 100 MΩ
- TDR Phase-Match Certificate — per-channel propagation delay, deviation from mean, compliance statement
- RoHS/REACH Declaration of Conformity
- ISO 10993 Biocompatibility Declaration (PFA jacket option)
- Material Certificate — conductor, dielectric, jacket material identification and lot traceability
- First Article Inspection Report (FAIR) — available on request for first production lot

This package supports FDA 510(k) submissions, CE Technical File, ISO 13485 incoming material qualification, and PMDA registration documentation.

Frequently Asked Questions

What is the standard AWG for ultrasound probe cables?

2 AWG is the industry standard for 128–256 channel probes. 44 AWG for 256–512 channel high-density probes. Both use ePTFE dielectric and silver-plated conductors at 50 Ω. The 42 AWG vs. 44 AWG decision is driven by bundle OD requirement: 44 AWG saves approximately 20% in bundle diameter at equivalent channel count.

How long does a probe cable last?

With 7-strand conductor: approximately 500,000 flex cycles at 30 mm bend radius, translating to 5–7 years of clinical use at moderate volume. With 19-strand: over 1,000,000 cycles, or 8–12+ years. Cable failure manifests as individual channel dropouts in the ultrasound image — initially 1–2 channels, increasing over time.

Can you match an existing probe cable without a drawing?

Yes. Send the probe (or failed cable) and we reverse-engineer via TDR, optical measurement, and material analysis. Turnaround: 3–5 business days to specification. Engineering fee credited against first production order of 50+ assemblies.

What is the lead time for a prototype?

3–5 weeks for standard configurations (42/44 AWG, 128–256 ch, standard connectors). 4–6 weeks for 512-channel or 46 AWG configurations. 42 AWG and 44 AWG cable elements are stocked — lead time is driven by bundle assembly, connector termination, and testing.

Do you offer private-label or white-label manufacturing?

Yes. We manufacture probe cables under your brand, with your part numbers and packaging. All documentation bears your company name. NDA and supply agreement required.

Need ultrasound probe cables for OEM manufacturing or probe repair? Share channel count, AWG, and platform compatibility — engineering quote within 48 hours.

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Applications

Ultrasound Probe & Transducer

Modern 3D ultrasound probes contain 128–512 piezoelectric elements requiring precisely matched electrical path lengths for accurate beamforming. Multi-core micro coaxial cable provides per-channel shielding with phase-matched construction, serving as the core interconnect for GE, Philips, Siemens, and Mindray platforms.

Medical Endoscope Camera

Endoscope insertion tubes of 2–4 mm diameter must transmit HD/4K video while enduring 1M+ flex cycles. Using 42–46 AWG stranded conductors, OD achieves as small as 1.2 mm, supporting HD-SDI and 4K LVDS signals while meeting ISO 10993 biocompatibility requirements.

Robotic Surgery Cable

Robotic surgery arms must carry imaging signals, electrosurgical RF power, motor drive currents, and fiber optic illumination through ±270° articulating joints — all within a single hybrid assembly. Micro coaxial elements serve as the signal core, qualified to 5 million torsional flex cycles.

NDT Ultrasonic Testing (PAUT / TOFD)

Weld inspection and corrosion mapping in petrochemical, nuclear, and aerospace industries use PAUT and TOFD — requiring 16–256 core, phase-matched ±1%, 50 Ω micro coaxial bundles with industrial PUR/FEP/PTFE jackets, compliant with ASME V and EN 583-2 standards.

MRI-Compatible Device Cables

The MRI bore presents three electromagnetic environments requiring all metals to pass ASTM F2503 ferromagnetic assessment. Non-magnetic silver-plated copper alloy conductors meet 1.5T/3T MRI safety requirements for MRI-guided interventions, coil connections, and CT detector array interconnects.

Semiconductor / Industrial Robotics / Aerospace

Semiconductor wafer AOI inspection, industrial robot joint routing, and aerospace sensor arrays all demand high-density, fine-gauge cables with tight impedance control and signal integrity — areas where micro coaxial cable delivers unmatched performance in high-frequency transmission, channel isolation, and compact construction.