2-178139-2 is a board-mounting header connector from the Dynamic Series D-3200M double-row high-voltage modular connector family, designed for 5.08mm pin pitch applications. This horizontal-type header features a 6-position configuration with black color housing and gold plating as standard, with tin plating available as an alternative. The connector has external dimensions of 24.2mm (dimension A), with optional dimensions B and C available depending on specific mounting requirements. It is RoHS compliant and suitable for industrial applications requiring reliable high-voltage connectivity, such as power supply systems and compact disk device applications where modular connector flexibility is essential.