Overview
IEC 61196-8-6:2012 is an international standard published by the International Electrotechnical Commission (IEC), focusing on coaxial communication cables. This part specifically details the requirements for 75-047 type semi-flexible coaxial cables that use a solid polytetrafluoroethylene (PTFE) insulation. These radio frequency cables are intended for high-performance signal transmission, especially in microwave and wireless equipment operating across frequencies from 500 MHz up to 18 GHz.
This standard ensures consistency in cable construction, performance, and testing methods for global telecommunications and electronics industries. It is designed to be applied alongside IEC 61196-1:2005 (generic specification) and IEC 61196-8:2012 (sectional specification for semi-flexible PTFE dielectric cables).
Key Topics
Main focus areas of IEC 61196-8-6:2012 include:
- Cable Structure and Materials:
- Inner conductor: silver plated copper (SPC) or silver plated copper clad steel (SPCW)
- Solid PTFE dielectric
- Outer conductor: tin-soaked copper wire braid
- Sheath: fluorinated ethylene propylene (FEP), low smoke zero halogen (LSZH) or polyvinyl chloride (PVC)
- Electrical Requirements:
- Characteristic impedance: 75 Ω ± 2.5 Ω at 200 MHz
- Frequency range: 500 MHz to 18 GHz
- Capacitance, voltage ratings, and screening attenuation (≥100 dB at 1 GHz)
- Attenuation, power rating, and return loss defined via formulas and tables
- Mechanical and Environmental Performance:
- Resistance to cold bending, soldering heat, and mechanical stresses
- Minimum bending radius (static: 4 mm, dynamic: 12 mm)
- Performance under temperature variations for different sheath materials
- Testing and Inspection:
- Methods to verify electrical, mechanical, and environmental compliance as prescribed in IEC 61196-1 and referenced standards
Applications
75-047 type semi-flexible coaxial cables covered by IEC 61196-8-6:2012 play a critical role in high-frequency communications, particularly where superior signal integrity and environmental resistance are required. Major application areas include:
- Microwave and Wireless Equipment:
– Connections within and between radio transmitters, receivers, and antennas
- Signal Transmission Units:
– Instrumentation, broadcasting systems, satellite communications, and RF test setups
- Telecommunications Equipment:
– Infrastructure requiring precise impedance matching and low signal loss at high frequencies
- Industrial and Military Electronics:
– Environments necessitating robust cable performance under challenging conditions (temperature, flexing, vibration)
Related Standards
To ensure correct implementation, IEC 61196-8-6:2012 is used in conjunction with the following standards:
- IEC 61196-1:2005:
- Generic specification for coaxial communication cables, outlining general terms, definitions, and baseline requirements.
- IEC 61196-8:2012:
- Sectional specification for semi-flexible coaxial cables with polytetrafluoroethylene (PTFE) dielectric, providing detailed performance benchmarks and testing guidance.
- IEC 61196-1-115:
- Electrical test methods for verifying impedance regularity and return loss.
- IEC 61196-8-1:2012:
- Blank detail specification for semi-flexible cables with PTFE dielectric, offering a customizable template for specific cable types.
For comprehensive compliance and to address all necessary requirements, consult both the primary and referenced IEC standards.
Keywords: IEC 61196-8-6, 75-047 semi-flexible coaxial cables, PTFE insulation, radio frequency cables, microwave signal transmission, high-frequency coaxial cable standard, IEC coaxial cable standards, communications cable specifications.