1-640443-0 is an MTA-100 IDC (Insulation Displacement Connector) designed for mass termination applications on printed circuit boards. This closed-end connector features a 0.2–0.4 mm² wire size capacity with tin-plated, high-conductivity copper alloy contacts, and is manufactured to UL94V-2 flammability standards. The connector supports multiple circuit positions (2–28 positions available) with RoHS-compliant lead-free construction. It is commonly used in applications requiring reliable, cost-effective board-to-wire connections in industrial control systems, telecommunications equipment, and consumer electronics where space efficiency and quick assembly are essential.