Product Overview

Semi-Rigid Cable

Aptiv Interconnect's semi-rigid cables offer superior performance for critical applications, featuring a solid outer conductor for exceptional shielding and electrical stability. These cables can be precisely formed into custom shapes with tight tolerances using CNC programmed bending/cutting tools, ensuring they retain their shape for fixed interconnections within RF modules, between systems, and on external equipment. Our specialized semi-rigid cables deliver very low loss, light weight, excellent VSWR, and superior phase stability, especially at higher frequencies. This makes them the preferred choice for demanding environments in aerospace and defense, test & measurement, medical electronics, and space flight systems where precise signal integrity and robust construction are paramount.

Semi-Rigid Cable product image

Features and Benefits

  • Exceptional Electrical Performance - Ultra-Low Loss: The solid outer conductor and low density PTFE dielectric minimize signal attenuation, even at very high frequencies.
  • Exceptional Electrical Performance - Excellent VSWR: Provides superior impedance matching, leading to minimal signal reflections.
  • Exceptional Electrical Performance - Superior Shielding Effectiveness: The continuous metallic outer conductor offers unmatched RF shielding (typically >100 dB), preventing signal leakage and external interference.
  • Exceptional Electrical Performance - High Frequency Capability: Designed for operation from DC up to 155 GHz and beyond, depending on diameter.
  • Exceptional Electrical Performance - Phase Stability: Exhibits excellent phase stability with temperature and minimal phase shifts when formed, crucial for phase-critical applications like phased array antennas.
  • Form Stability & Precision - Shape Retention: Once bent, the cable maintains its form, allowing for precise, repeatable routing within complex assemblies.
  • Form Stability & Precision - Precision Manufacturing: Utilizes precision CNC cutting and machining to 0.002-inch tolerance for highly accurate phase matching in multi-cable systems.
  • Robust & Durable Construction - High Power Handling: Capable of handling significant RF power due to efficient heat dissipation and robust construction.
  • Robust & Durable Construction - High Shock & Vibration Resistance: The rigid nature and robust build make them ideal for tactical and harsh environments.
  • Robust & Durable Construction - Weight Reduction Options: Available with aluminum outer conductors for up to 30% weight reduction without compromising performance.

Specifications, Parts, and Filters

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Impedance
50 Ohms (standard).
Frequency Range
DC to 270 GHz+ (diameter-dependent).
Attenuation (Insertion Loss)
Very low (varies by diameter/frequency).
Velocity of Propagation (VP)
High (69.5% to 83%).
VSWR (Voltage Standing Wave Ratio)
Excellent (often 1.25:1 or better).
Capacitance
24.5-29 pF/ft (for 50 Ohm cables).
Maximum Voltage
750 VRMS to 7500 VRMS (diameter-dependent).
Shielding Effectiveness
Superior (>100 dB).

Construction
Inner Conductor
Solid core, typically silver-plated copper-clad steel or bare copper.
Dielectric
Solid PTFE (Polytetrafluoroethylene) or low-density PTFE (for enhanced electrical performance).
Outer Conductor
Seamless metallic tube (copper or aluminum), providing 100% shielding.
Jacket
Often supplied without a jacket for internal use.
Outer Diameter (OD)
Standard industry sizes (e.g., 0.020", 0.034", 0.047", 0.085", 0.141", 0.250").
Minimum Bend Radius
For single, static bends only; requires special bending tools.
Connectors
Accepts specialized semi-rigid cable connectors (e.g., SMA, SMP) for direct solder attachment.
Compliance
Often meets MIL-DTL-17 performance requirements.

Temperature Range
Wide operating range, -55°C to +165°C (low-loss up to +250°C).
Thermal Shock
Resists rapid temperature changes.
Vibration & Shock
Excellent resistance for aerospace, defense, and tactical use.
Moisture Resistance
Solid outer conductor provides inherent sealing; jacketing enhances this.
Corrosion Resistance
Plating options (tin, silver, bare copper) offer varying protection.

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