IEC 60457-4:1978

IEC 60457-4:1978 defines the requirements for a 21 mm rigid precision coaxial line and associated hermaphroditic precision coaxial connector, with characteristic impedance options of 50 ohms (Type 9/21) and 75 ohms (Type 6/21). It is relevant where controlled impedance, repeatable interconnection, and dimensional precision are needed in electrical and RF-related engineering work. For organizations managing technical review, procurement, or conformity assessment, IEC 60457-4:1978 serves as a focused technical document for evaluating connector and coaxial line compatibility.

What is IEC 60457-4:1978?

This document is the primary reference for a specific rigid precision coaxial line and its matching hermaphroditic precision coaxial connector. Based on the title, it is intended to support engineering documentation, product evaluation, and laboratory verification activities where characteristic impedance must be controlled. The 2nd edition status and original row type indicate it functions as the main technical basis for this configuration rather than a supporting amendment. It is particularly useful when teams need a clear compliance reference for precision coaxial interconnects.

Applications of IEC 60457-4:1978

IEC 60457-4:1978 is most relevant in environments that specify precision coaxial interconnection hardware for testing workflows, measurement setups, and technical validation of RF or high-frequency equipment. It may be used by laboratories, manufacturers, and procurement teams reviewing connector compatibility, interface consistency, and documented evaluation requirements. The 50 ohm and 75 ohm variants support different system conventions, making the document useful during equipment selection, product integration, and quality workflows where operational consistency matters.

Why is IEC 60457-4:1978 important?

The value of IEC 60457-4:1978 lies in its role in reducing interface risk and supporting repeatable performance in precision coaxial assemblies. By defining a specific coaxial line and connector arrangement, it helps organizations align engineering validation, procurement decisions, and technical compliance checks around a consistent reference. That can improve interoperability, simplify conformity assessment preparation, and support testing consistency where controlled impedance and reliable mating performance are important.

• Defines a precision coaxial interface for 21 mm rigid line configurations
• Supports evaluation of 50 ohm and 75 ohm system compatibility
• Useful for laboratory verification, measurement setups, and technical assessment
• Provides a compliance reference for procurement and engineering documentation
• Helps improve consistency in interoperability and quality assurance workflows