IEC 60966-2-3:2009

Overview

IEC 60966-2-3:2009 is an international standard published by the International Electrotechnical Commission (IEC) that specifies detailed requirements for flexible coaxial cable assemblies. These assemblies operate within the frequency range of 0 MHz to 1,000 MHz and utilize IEC 61169-8 BNC connectors. This third edition updates and replaces the 2003 version, primarily by referencing IEC 61169-8 connectors instead of the previous IEC 60169-8, reflecting current international practice.

This detail specification complements the generic and sectional specifications outlined in IEC 60966-1:1999 and IEC 60966-2-1:2008/60966-2-2:2003. It applies specifically to flexible coaxial cables as described in IEC 60096-2, focusing on performance, testing, and construction parameters for cable assemblies intended for radio frequency applications.

Key Topics

• Frequency Range: The standard covers cable assemblies functional from DC up to 1,000 MHz, suitable for a wide variety of RF applications.
• Flexible Coaxial Cables: Specification applies to flexible coaxial cables complying with IEC 60096-2 requirements, supporting dynamic and static bending conditions.
• Connector Type: Defines usage of IEC 61169-8 compliant BNC connectors, characterized by a 50 Ω impedance and bayonet locking mechanism.
• Mechanical and Electrical Tests:
  • Uniformity of impedance (50 Ω ± 2 Ω)
  • Voltage proof testing at minimum 1 kV peak
  • Insulation resistance (>10 MΩ at 500 V)
  • Continuity for inner and outer conductors (≤10 mΩ after tensile testing)
  • Mechanical endurance tests including tensile strength, flexure, flexing endurance, and cable crushing.
• Climatic Category: Rated for 40/70/21, indicating operational durability in specified temperature and humidity ranges.
• Physical Characteristics:
  • Maximum cable diameter under 16.6 mm
  • Minimum bending radii for static (20 mm) and dynamic bending (75 mm)
  • Typical weight around 40 g/m + 37 g for assemblies.
• Quality Assurance: Details on qualification approval, capability approval, and lot-by-lot testing to maintain product consistency and reliability.

Applications

IEC 60966-2-3 compliant flexible coaxial cable assemblies are widely used in applications requiring reliable RF signal transmission such as:

• Television broadcasting and CATV distribution networks
• Audio and video signal interconnections
• Medical and industrial instrumentation systems
• Laboratory and test equipment where flexible, durable coaxial connections are essential
• Communication devices and RF test setups

The flexibility and standardized connectorization make these cable assemblies ideal for dynamic environments where repeated bending or movement occurs without compromising signal integrity.

Related Standards

• IEC 60966-1:1999 – Generic specification providing general requirements and methods for RF and coaxial cable assemblies.
• IEC 60966-2-1:2008 – Sectional specification for flexible coaxial cable assemblies.
• IEC 60966-2-2:2003 – Blank detail specification for flexible coaxial cables.
• IEC 60096-2 – Specification on flexible coaxial cables, basis for cable construction.
• IEC 61169-8 – Sectional specification covering RF coaxial BNC connectors with 50 Ω impedance and bayonet lock.
• IEC 61196-6 – Sectional specification for CATV drop cables, applicable cable types referenced in assemblies.

Practical Value

Adoption of IEC 60966-2-3:2009 ensures manufacturing and procurement of flexible coaxial cable assemblies meet stringent international quality and performance standards, providing:

• Consistency in electrical characteristics like impedance and insulation
• Mechanical robustness for demanding installation conditions
• Interoperability through standardized connectors and interfaces
• Reliable performance in telecommunications, broadcasting, and electronic measurement systems

Using this standard benefits engineers, manufacturers, and quality assurance professionals by providing clear, detailed guidance that aligns with global best practices for RF cable assembly design and testing.