The 5-1735480-1 is a 40-position board-to-board receptacle connector designed for vertical PCB mounting with a 0.8 mm free height and 0.9 mm pitch. It features a dual-row configuration with gold (8) contact plating in the mating area and tin over nickel plating on solder tail contacts, providing reliable electrical connections. The connector is constructed from liquid crystal polymer (LCP) housing with UL 94V-0 flammability rating and includes locating posts for precise alignment. Available in multiple board-to-board stack heights (17.00 mm, 18.00 mm, 19.00 mm, 20.00 mm), this connector is suitable for applications requiring compact, high-density interconnections in consumer electronics, computing, and industrial equipment where space constraints and reliable signal transmission are critical.