IEC 60169-9:1978 defines requirements for radio-frequency connectors with an inner diameter of the outer conductor of 3 mm (0.12 in), screw coupling, and a characteristic impedance of 50 ohms, identified as Type SMC. For engineering teams, laboratories, and procurement staff, it provides a focused technical reference for evaluating connector compatibility, interface expectations, and documented compliance. IEC 60169-9:1978 is especially relevant where RF connection integrity, repeatable assembly, and controlled performance in equipment design or verification activities are important.

Purpose of IEC 60169-9:1978

The purpose of IEC 60169-9:1978 is to establish a common technical basis for a specific RF coaxial connector type used in 50-ohm systems. By defining the connector family and coupling arrangement, it supports technical review, product evaluation, and conformity assessment for components intended to mate correctly and operate consistently. In practical workflows, the document helps designers and test organizations align connector selection, interface documentation, and verification activities around a recognized engineering specification.

Compliance applications of IEC 60169-9:1978

IEC 60169-9:1978 is commonly useful in compliance workflows for RF hardware, connector procurement, and laboratory evaluation of equipment that depends on standardized coaxial interfaces. It may support documentation for test fixtures, assemblies, and electronic systems where a 3 mm, screw-coupled 50-ohm connector is specified or reviewed. The reference is relevant during technical validation, incoming inspection, and quality workflows when teams need a clear compliance reference for connector identification and interface consistency.

Benefits of IEC 60169-9:1978

Using IEC 60169-9:1978 can help reduce risk in design and sourcing by giving teams a stable point of reference for connector selection and interface verification. It supports operational consistency, testing consistency, and engineering documentation across procurement, prototyping, and conformity assessment preparation. For organizations managing RF assemblies, the document can improve interoperability between mating parts and simplify technical validation by providing a common description for the connector type under review.

• Defines a specific 50-ohm RF coaxial connector interface for Type SMC applications.
• Supports connector selection, mating compatibility checks, and documented evaluation.
• Useful for laboratory setups, RF assemblies, and verification activities involving standardized interfaces.
• Assists procurement and compliance teams when reviewing technical documentation and product identification.