Amphenol FCI BergStak® 0.635mm Connectors feature a low 3mm stack height and 80 and 140 positions, making them ideal for applications requiring high pin counts and a low-profile connection. These compact, board-to-board connectors offer a micro-pitch of 0.635mm and support signal speeds of up to 8Gb/s with an open pin field for design flexibility. Additional features include polarization to prevent mismating, side walls that protect the contacts during mating, and UL 94V-0 housing made from high-temperature thermoplastic LCP. The connectors offer a current rating of 0.5A per contact (all contacts powered), 1000MΩ minimum insulation resistance, and a voltage rating of 100VAC/DC. Amphenol FCI BergStak 0.635mm Connectors provide a high-performance, space-saving solution for data servers, automation machines, medical devices, and more.