Harwin Launches DuoNex Series

Harwin Asia has announced the launch of its DuoNex series, a new range of 2.00 mm pitch board-to-board connectors, available from July 2026. The series introduces a self-mating integrated male/female design that allows two identical connectors to mate directly with one another, reducing part count and simplifying board-to-board assembly.

Engineered for connections where boards may not sit in perfect alignment, DuoNex connectors accommodate up to ±3° of transverse and ±4° of longitudinal angular tolerance. This built-in compliance eases assembly and helps maintain reliable contact across a range of mounting conditions.

The series is rated at 3.2 A per contact and operates across a temperature range of −55°C to +125°C, suiting it to demanding industrial and embedded applications. Connectors carry a 500 V AC/DC withstand voltage, 20 mΩ maximum contact resistance, and 1000 MΩ minimum insulation resistance.

Key features

●    2.00 mm pitch, self-mating integrated male/female design

●    3.2 A current rating per contact

●    Available in vertical and right-angle configurations

●    SMT and through-board (DIP) termination options

●    Up to ±3° transverse and ±4° longitudinal angular tolerance

●    −55°C to +125°C operating temperature range

●    Pin counts from 2×05 up to 2×30, in reel or tube packaging

Configurations

The DuoNex series is offered in three termination and orientation variants to suit different board layouts:

●    MMDNX-B3A065 — 2.00 mm pitch, 90° DIP type (right-angle, through-board)

●    MMDNX-B3B065 — 2.00 mm pitch, 180° SMT type (vertical, surface-mount)

●    MMDNX-B3C065 — 2.00 mm pitch, 180° DIP type (vertical, through-board)