IEC 60603-4:1987

IEC 60603-4:1987 defines requirements for connectors for frequencies below 3 MHz used with printed boards, specifically two-part connectors with contacts spaced at 1.91 mm (0.075 in) centres and staggered terminations at the same spacing. It is relevant for engineering teams, testers, and procurement specialists who need a clear technical reference for connector selection, documentation, and conformity assessment. IEC 60603-4:1987 helps support consistent product evaluation and technical review where printed board interconnection details must align with an established compliance reference.

Overview of IEC 60603-4:1987

This document is focused on a particular connector configuration for printed boards, with attention to contact spacing and the two-part construction described in the title. In practice, that makes it a useful technical document for assessing interface compatibility, dimensional alignment, and connection planning in electrical equipment that uses printed board assemblies. For organizations performing technical validation or quality workflows, the reference can support controlled evaluation of connector suitability and help maintain operational consistency across design and sourcing decisions.

Compliance applications of IEC 60603-4:1987

IEC 60603-4:1987 may be used in engineering documentation, supplier qualification, and laboratory evaluation for printed board connectors intended for lower-frequency applications. It is particularly relevant where procurement teams and design engineers need a common basis for product review, conformity assessment preparation, or specification comparison. The standard can also support testing workflows by giving a defined reference point for connector arrangement, helping reduce ambiguity during inspection, verification activities, and documented evaluation of interconnection hardware.

Importance of compliance with IEC 60603-4:1987

Using IEC 60603-4:1987 as part of technical compliance work can improve consistency between design intent, procurement records, and inspection criteria. For manufacturers and integrators, that may reduce integration risk, support technical validation, and simplify communication between engineering, quality assurance, and purchasing functions. It is also useful when preparing for conformity assessment, since a clearly defined connector reference can help make testing, acceptance review, and product comparison more repeatable and defensible.

• Two-part printed board connector reference for applications below 3 MHz
• Defined around 1.91 mm contact spacing and staggered terminations
• Useful for design review, sourcing checks, and interface compatibility assessment
• Supports verification activities and documentation for conformity assessment