IEC 61169-43:2013

Overview - IEC 61169-43:2013 (RBMA series blind mating RF coaxial connectors)

IEC 61169-43:2013 is a sectional specification that provides rules and guidance for preparing detail specifications (DS) for RBMA series blind mating RF coaxial connectors. The standard applies to 50 Ω threaded-coupling connectors with an operating frequency limit up to 12.4 GHz, intended for connections to RF cables or micro‑strips in wireless, microwave and telecommunication equipment. It complements the generic requirements in IEC 61169-1 by prescribing mating-face dimensions, gauging, test schedules and inspection requirements specific to the RBMA series.

Key technical topics and requirements

• Connector family and electrical rating
  • RBMA series, characteristic impedance 50 Ω, threaded coupling, operating frequency up to 12.4 GHz.
• Mating-face and gauge information
  • Mating face dimensions for general connectors - Grade 2 and dimensional details of standard test connectors - Grade 0.
  • Gauges: detailed gauge pin geometry and two gauge types (A and B) with dimensional limits and surface-finish requirements (e.g., mass of gauge ~28 g ±2 g; surface roughness Ra ≤ 0.4 μm).
  • Example retention requirement: gauge B must have a withdrawal force ≥ 0.28 N after specified sizing procedure.
• Mechanical limits and mounting
  • Limits for radial and axial misalignment, floating vs. rigid mounting, and reference planes for mating interfaces.
• Quality assessment & tests
  • Selection of tests from IEC 61169-1, recommended performance characteristics, and prescribed acceptance (M) and periodic (H) test schedules (see Tables 8 and 9 in the standard).
  • Procedures for quality conformance inspection, qualification approval and maintenance.
• Guidance for DS authors
  • Instructions and a blank pro‑forma to prepare detail specifications including identification, performance, marking and test severities.

Practical applications and who uses this standard

• Typical applications: wireless base stations, microwave modules, telecom RF front-ends, and any system requiring blind‑mating RF interfaces in modular panels and racks.
• Primary users:
  • Connector manufacturers and design engineers preparing detail specifications.
  • Quality and test laboratories performing mating/gauging, retention and electrical/mechanical tests.
  • Procurement and compliance teams specifying connector acceptance criteria.
  • System integrators and RF designers concerned with mating tolerances and reliable blind mating.

Related standards

• IEC 61169-1: Generic specification - general requirements and measuring methods (normative reference).
• Other parts of the IEC 61169 series cover different RF connector families and additional test methods.

Practical takeaway: IEC 61169-43 helps ensure interoperable, reliable RBMA blind‑mating RF connectors by standardizing critical mating dimensions, gauging methods and test schedules - essential for manufacturers, test labs and system designers working at RF up to 12.4 GHz.