1.85mm by 1.85mm (.073” by .073”) GbX* Cable Assembly FEATURES AND SPECIFICATIONS GbX, the next-generation high-speed backplane interconnect cabling system, delivers over 6 Gbps and signal density of 55 differential pairs per linear inch 74552 4-Pair Configuration The GbX high-performance backplane cable assemblies and connectors provide the speed and density required by leading-edge backplane designs. With a native differential signaling speed of 6.0 Gbps, the system is well suited for existing and future generations of XAUI (10 Gigabit Attachment Unit Interface) and InfiniBand†- based systems. GbX cable assemblies offer improved capabilities to current backplane cable products, with impedance matching, low pair-to-pair crosstalk, within-pair and pair-to-pair skew control and a variety of raw-cable designs to meet customer-specific loss budgets. Cables are available in a 4-pair (column) configuration. GbX High Performance Cable Assemblies complement Molex’s existing line of GbX products. For more information on Molex’s extensive GbX product offering, please visit: www.molex.com/ads/GbX.html. Features and Benefits Design ■ 4-pair configuration provides 55 real-differential pairs per linear inch (2, 3 and 5 pair configurations are possible extensions)‡ allowing high density with more differential pairs than similar backplane products ■ Bifurcated contact beams assure greater reliability with two points of contact to header pins GbX Cable Assembly (left), Daughter Card Connector (right), Backplane Header (front) Process ■ Opposed gap-resistance welding re-flows cable conductor into the signal contact, providing a clean electrical path ■ Zinc or Aluminum die-cast backshells provide shielding protection for custom Input/Output backplane designs ■ Integrated stiffeners and latches provide mechanical robustness and solid mating to vertical or rightangle mating (RAM) headers ■ Low-pressure, strain-relief insert molding provides strain relief for the termination area and allows tighter cable shield to conductor tolerances for better impedance control ■ Ground shield for individual pairs reduces crosstalk at the mating interface for improved system performance SPECIFICATIONS Reference Information Mates With: GbX right-angle male connector (Series 75717) GbX standard 4-pair header (Series 75235) Designed In: Millimeters Electrical Current: 1.0A Dielectric Withstanding Voltage: 250V Insulation Resistance: 40 Megohms min. *GbX is a registered trademark of Amphenol, Corp. †InfiniBand is a registered trademark of the InfiniBand Trade Association ‡Contact Molex for tooling justification Mechanical Contact Insertion Force: 44.48N (10.00 lbf) typical per contact Contact Retention to Housing: 8.90N (2.00 lbf) min. per contact Insertion Force to PCB: 0.59N (0.13 lbf) max. per contact Mating Force: 0.59N (0.13 lbf) max. per contact Unmating Force: 0.29N (0.07 lbf) min. per contact Durability: 250 cycles max. Physical Housing: LCP, UL 94V-0 Contact: Copper (Cu) Alloy Plating: Contact Area — 0.76 um (30u”) Gold (Au) min. Solder Tail Area — Tin (Sn) Underplating — Nickel (Ni) PCB Thickness: 1.60mm (.062”) typical Operating Temperature: -55 to +105°C GbX 4-Pair Wafer – Signal View APPLICATIONS ■ Networking equipment - Storage racks - High-end servers ■ Automated test equipment - Integrated chips - Memory and diagnostic testers ■ Telecommunications - Edge routers - Switches - Digital cross connects ■ Supercomputers and high-end data equipment - Server farms 1.85mm by 1.85mm (.073” by .073”) GbX* Cable Assembly 74552 4-Pair Configuration GbX Cable Connector Internal Backplane - GbX GbX Input/Output Cable Connector External Backplane - GbX ORDERING INFORMATION Cable Assembly Order Number Supplied as Example Only Order No. 74552-0001 Component GbX Cable Assembly Wafer Configuration 4 pair Cable Length† 1.00m (3.28’) GbX cables only sold as terminated cable assemblies. Part numbers and sales drawings will be established based on specific customer design requirements. † Cable Length: Dependent upon customer design. Contact Molex with specific requirements. GbX Right-Angle Male Connector Series Number Supplied as Example Only Order No. Component Wafer Configuration 75717-XXXX GbX Right-Angle Male Connector GbX right-angle male connectors sold as customized assemblies. Part numbers and sales drawings will be established based on specific customer design requirements. GbX Standard 4-Pair Headers 4 pair Order No. Modularity Header Circuits Tooling Order No. 75235-0104 75235-0204 75235-2104 75235-2204 75235-4104 75235-4204 10-Column 25-Column 10-Column 25-Column 10-Column 25-Column Open Open Left Guide Left Guide Right Guide Right Guide 80 200 80 200 80 200 62202-2000 62202-2020 62202-2000 62202-2020 62202-2000 62202-2020 *GbX is a registered trademark of Amphenol, Corp. Americas Headquarters Lisle, Illinois 60532 U.S.A. 1-800-78MOLEX [email protected] Order No. USA-344 Far East North Headquarters Yamato, Kanagawa, Japan 81-462-65-2324 [email protected] Far East South Headquarters European Headquarters Jurong, Singapore Munich, Germany 65-6-268-6868 49-89-413092-0 [email protected] [email protected] Visit our website at www.molex.com/product/gbx_ca.html Printed in USA/JI/2006.04 Corporate Headquarters 2222 Wellington Ct. Lisle, IL 60532 U.S.A. 630-969-4550 Fax:630-969-1352 ©2006, Molex