OD1.8mm Brown RG178 Silver-Plated Copper Coaxial Cable

RG178 is a high-performance RF coaxial cable widely used in high-frequency signal transmission and miniaturized equipment. Below is a detailed overview of its key features and applications:

1. Structure and Materials

• Conductor: Silver-plated copper (enhances conductivity and reduces high-frequency skin effect losses).

• Insulation: Typically PTFE (polytetrafluoroethylene), offering high-temperature resistance and low dielectric loss.

• Shielding:

• Dual-layer shielding (aluminum foil + silver-plated copper braid) for high shielding effectiveness (>90%) and strong EMI resistance.

• Jacket: Brown PVC or fluoropolymer outer layer with an outer diameter (OD) of 1.8mm, ensuring flexibility and suitability for tight spaces.

2. Key Specifications

• Impedance: 50Ω (standard RF impedance).

• Frequency Range: Supports up to 6 GHz (attenuation varies with frequency, e.g., ~1.0 dB/m at 1 GHz).

• Operating Temperature: -40°C to +200°C (PTFE insulation ensures thermal stability).

• Bend Radius: Minimal (approximately 5× cable diameter), ideal for dynamic bending applications.

• Rated Voltage: Typically 300V RMS.

3. Core Advantages

• Low Loss: Silver-plated conductor and PTFE insulation minimize signal attenuation at high frequencies.

• High Shielding: Dual-layer shielding effectively suppresses interference, suitable for precision instruments.

• Compact Design: 1.8mm OD saves space in drones, endoscopes, and other micro devices.

• Environmental Resistance: Resists corrosion, oil, and harsh industrial/medical environments.

4. Typical Applications

• RF Communication: WiFi/Bluetooth antennas, GPS modules, radios.

• Medical Devices: Endoscopes, ultrasound probes.

• Test & Measurement: Oscilloscope probes, network analyzer connections.

• Aerospace: Avionics, satellite communication systems.

• High-End Audio: Digital audio interfaces (e.g., AES/EBU) for low-distortion signal transfer.

5. Usage Notes

• Connectors: Use SMA, MCX, or other micro-connectors for impedance matching.

• Soldering: Silver plating oxidizes easily; use low-temperature solder and avoid prolonged heat exposure.

• Bend Fatigue: Frequent bending may weaken shielding; secure stress points.

With its ultra-thin profile, high-frequency performance, and robust shielding, the RG178 silver-plated coaxial cable is the preferred choice for miniaturized, high-precision applications where space and signal integrity are critical.