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Micro Coaxial Watertight Connector

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1. Informations sur les dessins

Dimensions en mm (1 mm = 0,03937 pouce)
Filets en pouces (1 pouce = 25,4 mm)

2. Male View

3. Principaux paramètres

Male ViewMain ParametersNotes
[Coaxial Image]Working Pressure
50MPa
Coaxial Cable
75-3
50-3
Signal Transmission Frequency
1.6GHz
Voltage Standing Wave Ratio
1.3
Return Loss
-0.75dB
Installation Requirements:
Drawing dimension unit: mm.
Base mounting radius: 12.3 mm.
Surface finish: Ra1.6.
Mounting thread: 7/16-20UNF-2A.
Thread length: 16 mm.

4. Product Description

Micro Coaxial Watertight Connectors

Product Overview & Series Introduction

Les Micro Coaxial Watertight Connectors series by HYSF Subsea (Xiamen Chuida Technology Co., Ltd.) is a highly specialized high-frequency interconnect solution designed for underwater Radio Frequency (RF) signal transmission. Engineered to maintain absolute signal integrity while submerged in extreme high-pressure marine environments, this series delivers excellent high-bandwidth performance with minimized attenuation. Developed through advanced independent innovation, our micro coaxial architecture serves as a premium domestic substitution for core imported subsea components, breaking international brand monopolies across high-end oceanographic sectors.

Every connector in this series features precision-engineered contacts integrally molded into heavy-duty neoprene rubber bodies through a unibody High-Temperature Vulcanization (HTV) process. This design achieves standard-setting structural resilience and pressure-tight insulation thresholds. To fit seamlessly onto space-constrained high-frequency equipment bulkheads, sensor modules, and subsea enclosures, the series offers a complete physical component infrastructure, including:

  • RF Cable Assemblies: High-flexibility Coaxial Male inline cables (SFMCTZILM) and Coaxial Female inline cables (SFMCTZILF) optimized for low signal insertion loss.
  • Compact Bulkhead Receptacles: Precision-machined Coaxial Male receptacles (SFMCTZBHM) and Coaxial Female receptacles (SFMCTZBHF) designed with a standard 7/16-20UNF-2A installation thread profile and a compact base mounting radius of 12.3 mm for reliable hull and housing penetration.
  • Fitted Protection Fittings: Durable Coaxial Male blanking plugs (SFMCTZDCM) and Coaxial Female blanking plugs (SFMCTZDCF), paired with precision Male locking nuts (MCDLS-M) and Female locking nuts (MCDLS-F) to protect uncoupled interfaces from salt spray and moisture.

Key Technical Specifications & Core Features

  • Precision Impedance Matching: Engineered with dedicated 50Ω or 75Ω impedance matching options (such as 50-3, 50-5, or 75-3 configurations) to eliminate high-frequency signal reflection and guarantee pristine data transmission.
  • High-Frequency Bandwidth Support: Certified to transmit high-frequency signals up to 1.6 GHz safely, maintaining an optimal Voltage Standing Wave Ratio (VSWR) of 1.3 and a low insertion loss profile of just -0.75dB.
  • Deep-Sea Hydrostatic Sealing: Rated for a maximum continuous operational pressure of 50MPa, guaranteeing an absolute zero-leakage security threshold at diving depths reaching 5,000 meters.
  • Excellent Electrical Insulation: Backed by a standard operational voltage rating of 550V AC/DC, with contact resistance kept below 0.01Ω and a superior insulation resistance threshold of ≥200MΩ @ 1000V DC.
  • Harsh Thermal & Mechanical Endurance: Preserves raw material flexibility and mechanical locking compliance across extreme operating temperatures ranging from -60°C up to +80°C with a rated lifespan exceeding 500 mating cycles.

Industrial Applications & Working Conditions

Les Micro Coaxial Watertight Connector line is explicitly built to handle high-vibration, high-pressure hydrostatic loads, high-salinity corrosive salt sprays, and intense underwater working conditions. Critical application deployment sectors include:

1. Acoustic Detection Equipment & Sonar Systems

Acts as the critical high-frequency transmission interface for subsea sonar arrays, hydrophones, and acoustic positioning transducers. The precise impedance matching ensures that raw acoustic telemetry and echoes pass into internal processing hulls without frequency distortion or signal attenuation.

2. Marine Radar & Communication Systems

Serves as the high-frequency RF connectivity backbone for subsea communication grids, surface-splash naval radar hubs, and scientific research instrumentation arrays. It allows high-frequency microwave and wave signals to route continuously through hull bulkheads with high return loss performance.

3. High-Definition Underwater Video Monitoring

Extensively deployed to connect deep-sea analog and high-frequency digital video camera systems. By supporting high-bandwidth single-channel transmission paths, it enables real-time, flicker-free transmission of critical visual data during complex deep-water deployment and recovery operations.

4. Offshore Energy & Marine Defense Equipment

Utilized across defense weapons platforms, offshore drilling manifolds, and autonomous subsea vehicle sensor pods. The unibody molded neoprene body resists marine growth and biofouling while enduring massive mechanical shocks common during heavy-sea deployment and rescue operations.

Frequently Asked Questions (FAQ)

Q1: What are the available impedance matching options for the HYSF Micro Coaxial series?

A : Our Micro Coaxial series provides full circuit architecture flexibility by offering both 50Ω and 75Ω impedance matching designs (including standard 50-3, 50-5, and 75-3 subsea coaxial cables). This allows you to match the exact impedance specifications of your high-frequency RF cameras, radars, or sonar processing boards, effectively suppressing signal reflection and cross-talk.

Q2: Can these Micro Coaxial watertight connectors be plugged in while fully submerged underwater?

A : Yes, this high-frequency series supports wet-mateable field operations. The neoprene rubber bodies are precision-engineered with tight-tolerance wiping lips that physically displace water from the contact interfaces during coupling, preventing electrical shorts and safeguarding an insulation resistance threshold of over 200MΩ even when mated in high-salinity seawater.

Q3: What strict factory quality testing protocols do these coaxial connectors undergo?

A : Product reliability in extreme environments is our core foundation, ensuring a proven 99.98% reliability rate. Every production batch undergoes comprehensive factory testing inside our standardized inspection architecture before delivery:

  • Hydrostatic Pressure Testing: Tested inside our specialized 100MPa high-pressure pump system, holding full target pressure for 60 minutes to verify zero structure leakage and zero material deformation under simulated deep-sea hydrostatic loads.
  • Dielectric Withstand Test (Hipot): Applied 2000V DC for 1 minute between individual pins and between pins and the metal shell to confirm that leakage current remains safely below 10mA.
  • Insulation Resistance (IR) Test: Verified with a 15kV insulation tester across all contacts and nodes to guarantee that material and sealing properties exceed ≥200MΩ @ 1000V DC.
  • High-Frequency Performance Testing: Verified with precision vector network analyzers to confirm signal transmission frequency up to 1.6 GHz, a Voltage Standing Wave Ratio below 1.3, and return loss parameters conforming to strict -0.75dB criteria.

Q4: What material selection options can be specified for the bulkhead receptacle housings?

A : Our standard stock features high-temperature vulcanized neoprene rubber molded over premium 316L Stainless Steel, which provides excellent mechanical strength and standard rust resistance. For specialized, high-end marine engineering projects, we specialize in high-precision custom machining upgrades in Titanium Alloy (ideal for strict weight-saving limitations and ultra-deep submersibles) and Naval Brass / Marine Bronze (highly recommended for shallow-water aquaculture due to its natural anti-biofouling performance).

Q5: What corporate quality management systems govern HYSF subsea manufacturing?

A : HYSF operates under a strictly standardized quality management architecture as an officially certified Technology Enterprise holding over ten core utility model patents. Our manufacturing facilities are fully audited and certified under the ISO 9001 Quality Management System. Furthermore, our manufacturing workflows, precision production, and raw material tracking records adhere directly to the strict GJB 9001C-2017 National Quality Standard, delivering mission-critical durability across national marine research institutes, defense contractors, top shipyards, and major research bodies like the Chinese Academy of Sciences (CAS).

Contact

Jason Liu

Directeur technique

HYSF Subsea

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