PDK81301-2*1.0+3*2*0.2+RG316 Hybrid Watertight Cable – Power, Multiple Shielded Signal Pairs & 50Ω Coaxial Link, Tinned Copper, PP+FEP Insulation, Tinned Copper Braid, TPU Jacket, For Subsea Video & Data

This PDK81301 hybrid watertight cable is specifically engineered for advanced subsea and harsh‑environment systems requiring a diverse mix of power distribution, multiple noise‑immune signal channels, and high‑frequency coaxial transmission – all within a single rugged water‑blocked cable. It integrates two 1.0 mm² (approx. AWG 17) power conductors, three individually shielded twisted pairs (3×2×0.2 mm²) for low‑voltage differential signals, and one RG316 coaxial cable for RF or video transmission – a complete hybrid solution for underwater robotics, cameras, and instrumentation.

Model number

PDK81301-2*1.0+3*2*0.2+RG316

Specification

2*1.0+3*2*0.2+RG316

Conductor material

Tinned copper

Insulation material

PP+FEP

Sheath material

Thermoplastic Polyurethane (TPU)

Braiding material

Tinned copper

Sheath outer diameter (mm)

12.5±0.3mm

Sheath color

Black

Temperature range

• 40-105℃

Water pressure resistance

10MPA

All copper conductors are tinned to ensure superior corrosion resistance in seawater. A hybrid insulation system is employed: PP (Polypropylene) insulates the power and signal pair conductors, while FEP (Fluorinated Ethylene Propylene) serves as the dielectric for the RG316 coaxial element, offering excellent high‑frequency performance and thermal stability. An overall tinned copper braid provides comprehensive EMI shielding across the entire cable assembly. The outer jacket is extruded from TPU (Thermoplastic Polyurethane) , delivering outstanding abrasion, hydrolysis, and oil resistance. The cable incorporates multi‑layer watertight construction with water‑swellable tapes and pressure‑resistant fillers to prevent radial and longitudinal water ingress. This cable is ideal for ROV video systems, subsea CCTV, underwater inspection tools, offshore observation platforms, and military surveillance – where reliable DC power, multiple sensor/control lines, and real‑time coaxial video or RF communication must coexist with absolute watertight integrity.

Key Features – Tinned Copper Conductors, Hybrid PP+FEP Insulation, Shielded Pairs, RG316 Coax, Tinned Copper Braid, TPU Sheath

Tinned copper conductors – two 1.0 mm² stranded power cores for efficient power delivery (lights, sonar, small thrusters); three 0.2 mm² twisted pairs for RS‑485, CAN, or 4‑20 mA signals; RG316 coaxial center conductor (silver‑plated copper‑clad steel, 7/0.18 mm); all tinned for corrosion resistance.

Hybrid insulation (PP + FEP) – PP insulation on power and signal conductors offers low dielectric loss, very low moisture absorption, and stable performance; FEP dielectric on RG316 provides excellent high‑frequency characteristics, low attenuation, and a wide temperature range.

Three shielded twisted pairs (3×2×0.2 mm²) – each pair is individually shielded (foil + drain wire) for superior EMI rejection and crosstalk isolation.

RG316 coaxial cable – 50Ω characteristic impedance, suitable for analog video (CVBS), SDI, RF communications, or high‑frequency signals; features low attenuation and excellent phase stability.

Tinned copper braid shield – an overall tinned copper wire braid provides additional protection against electromagnetic interference, ensuring signal integrity in electrically noisy subsea environments.

TPU outer sheath – polyurethane jacket offers exceptional abrasion, cut, tear, and hydrolysis resistance; remains flexible at low temperatures and resists oils, greases, UV, and marine fouling.

Watertight integrity – multi‑layer water‑blocking tapes and compact core filling prevent water migration along the cable, even under high hydrostatic pressure.

Ideal For

ROVs and AUVs with analog video cameras (RG316 coaxial link), RS‑485 control/telemetry (twisted pairs), and DC power (1.0 mm²)

Subsea CCTV systems and observation stations requiring real‑time composite video over coax alongside power and serial commands

Offshore inspection equipment (pipeline, wellhead) combining video inspection, sensor data, and power in one watertight cable

Underwater acoustic arrays and sonar systems using coaxial RF links for transducer signals

Military underwater surveillance systems demanding secure, interference‑free video and data transmission

Any subsea application requiring power (2×1.0) + shielded RS‑485 (3 pairs) + RG316 coaxial video/RF + watertight integrity

Conclusion

This PDK81301 hybrid watertight cable delivers a comprehensive, high‑performance solution for subsea video and data systems. The combination of tinned copper power cores, shielded signal pairs, an RG316 coaxial link, hybrid PP+FEP insulation, and a rugged TPU sheath – protected by an overall tinned copper braid – ensures reliable, interference‑free operation under high hydrostatic pressure and long‑term seawater exposure. It is an ideal choice for marine engineering, subsea inspection, and underwater surveillance.