5106775-1 is a 55-position vertical female connector assembly designed for Z-PACK 2mm HM Type C backplane applications. The connector features phosphor bronze contacts with glass-filled polyester housing rated UL 94V-0 (gray), and includes nickel underplating (1.27µm minimum) with tin plating (0.5µm minimum) on action pins. It conforms to IEC 61076-4-101 Performance Level 1 and Level 2 testing standards, and is qualified against Telcordia GR-1217-CORE Quality Level III for both central office and uncontrolled environment applications. The connector utilizes a 2x2mm square grid with 55 plated-through holes and is lubricated with Telcordia-approved lubricant. This connector is ideal for high-reliability telecommunications and data communications backplane interconnect systems.