IEC 61076-4-113:2002

Overview

IEC 61076-4-113:2002 is an IEC detail specification for two‑part printed board connectors used in bus applications. It covers a 5‑row, 160‑contact connector with a 2.54 mm (0.1 in) grid for printed boards and backplanes. The standard defines mechanical dimensions, electrical and mechanical characteristics, mounting and termination methods, and test schedules for connectors intended for low‑frequency analogue and digital bus use.

Key topics and requirements

• Connector configuration: Two‑part connector, 5 rows (rows a, b, c comply with IEC 60603‑2; rows z and d provide 32 contacts each for standard signals or grounding).
• Contact pitch: 2.54 mm grid (0.1 in) - suitable for standard printed circuit board and backplane layouts.
• Contact count: 160 contacts (5 rows).
• Terminations & mounting:
  • Free board connectors: solder terminations for PCB holes (PCB thickness 1.6–2.4 mm).
  • Fixed board connectors: press‑in terminations, optionally with wire‑wrap; suitable for backplanes (thickness 1.6–6.4 mm).
• Electrical ratings:
  • Current rating: 1 A at 70 °C (fully loaded connector).
  • Rated voltage: specified per material group and pollution degree (examples in the standard: 400 V for material groups I–IIIa/b, pollution degree 1; 32 V for some combinations).
  • Insulation resistance: requirement specified in the document.
• Environmental & mechanical:
  • Climatic categories (examples in the standard): PL1: 55/125/56 and PL2: 55/125/21.
  • Mechanical life, contact retention, engagement lengths and tolerances, planarity and inclination limits are defined.
• Testing & conformity: Detailed test schedule referencing IEC 60512 series and other environmental and mechanical tests.

Applications and users

IEC 61076-4-113 is relevant for:

• Connector and cable harness designers specifying backplane and card-edge bus interfaces
• PCB and system designers creating printed board-to-backplane connections
• Manufacturers and test engineers ensuring mechanical, electrical and environmental compliance
• Procurement, quality and regulatory teams who require standardized connector specifications for interoperability in industrial, telecommunications, and embedded systems

Keywords: IEC 61076-4-113, printed board connectors, 2.54 mm grid, backplane connectors, two‑part connectors, 5 rows, 160 contacts, bus applications.

Related standards

Normative references include (selection):

• IEC 61076‑1, IEC 61076‑4 (sectional), IEC 60603‑2, IEC 60326‑3 / ‑5 (printed board design), IEC 60512 (tests), IEC 60664‑1 (insulation coordination), and IEC 60068‑1 (environmental testing). For full compliance, consult the complete list in the standard.