The 644180-1 is an MTA-100 header connector designed for wire-to-board applications with 13 contact positions and vertical PCB mounting. It features a friction lock mating connector, 2.54 mm contact centerline spacing, and square-shaped copper alloy contacts with tin plating on the mating area. The connector is rated for 250 VAC, has a post size of 0.64 mm, and utilizes a thermoplastic polyester housing with UL 94V-0 flammability rating, making it RoHS and ELV compliant. The solder tail contacts are copper alloy with tin plating and a post length of 3.56 mm, supporting wave solder processes up to 265°C. This connector is ideal for reliable interconnection in industrial and commercial PCB applications requiring secure, polarization-free connections.