The 4-102973-0 is a .100 inch AMPMODU breakaway header connector designed for PCB mounting applications. It features 80 positions arranged in 2 rows with 2.54 mm centerline spacing and row-to-row spacing, providing a compact double-row configuration. The connector has a mating post length of 8.08 mm and a termination post length of 3.18 mm, with square phosphor bronze contacts plated in gold (15 µm) for reliable mating and tin-lead over nickel plating on the solder tail. Electrical specifications include a 3 A current rating, 5,000 MO insulation resistance, and 750 V dielectric withstanding voltage, with an operating temperature range of -65°C to +105°C. The housing is constructed from thermoplastic with glass fiber reinforcement (UL 94V-0 rated), and the connector is RoHS/ELV compliant, making it suitable for industrial and commercial PCB interconnect applications where reliable, high-density connections are required.