The 1-2201197-0 is a fine pitch surface mount stacking connector receptacle assembly designed for board-to-board interconnection applications. It features a 0.4 mm centerline spacing with 10 positions arranged in an in-line contact layout, and is configured for vertical PCB mounting orientation. The connector has a board-to-board stack height of 0.98 mm (0.038 inches) and includes a vacuum cover for enhanced reliability and environmental protection. This receptacle assembly is unkeyed and without grounding plate or locating posts, making it suitable for compact, high-density interconnect applications in consumer electronics, computing, and telecommunications equipment where space constraints and reliable signal transmission are critical.