IEC 60169-21:1985

IEC 60169-21:1985 defines a technical reference for radio-frequency connectors with an inner diameter of the outer conductor of 9.5 mm and two screw-coupling versions, identified as Types SC-A and SC-B, with a characteristic impedance of 50 ohms. It is relevant for teams assessing connector compatibility, interface consistency, and documented evaluation in RF systems. For engineering, procurement, and compliance workflows, IEC 60169-21:1985 helps establish a common basis for product selection, verification activities, and technical review.

IEC 60169-21:1985 standard overview

This document addresses a specific connector family used in radio-frequency applications where controlled impedance and mechanical mating method are important to operational consistency. By defining two screw-coupling variants with the same nominal outer conductor diameter and 50-ohm impedance, it supports technical comparison, conformity assessment, and procurement decisions. IEC 60169-21:1985 is therefore useful when organizations need a clear compliance reference for connector interface identification, documentation control, and engineering validation.

Applications of IEC 60169-21:1985

The standard is typically consulted in RF equipment design, component qualification, laboratory evaluation, and maintenance documentation where connector interchangeability must be understood. It may be used by manufacturers, test labs, and system integrators working with RF assemblies that require consistent mechanical coupling and impedance alignment. In practical workflows, IEC 60169-21:1985 can support product evaluation, technical assessment, and specification checks during development, purchasing, or acceptance testing.

Why IEC 60169-21:1985 matters

Using a clear connector reference helps reduce integration risk and improves traceability across engineering documentation and compliance workflows. The defined connector interface can support testing consistency, operational compatibility, and quality assurance when RF assemblies are reviewed for conformity assessment. For procurement and regulatory preparation, IEC 60169-21:1985 provides a stable basis for comparing parts, confirming technical requirements, and reducing ambiguity during validation and acceptance activities.

• Defines a 50-ohm RF connector interface with a 9.5 mm outer conductor diameter.
• Covers two screw-coupling versions, supporting connector identification and mating compatibility checks.
• Useful for technical review, laboratory evaluation, and engineering specification control.
• Supports procurement, conformity assessment, and documentation of RF component requirements.