A paddle card includes a printed circuit board and a twin-axial cable. The PCB includes a first signal pad on a top surface of the PCB and a second signal pad on a bottom surface of the PCB. The second signal pad is directly below the first signal pad. The twin-axial cable includes a first signal conductor coupled to the first signal pad and a second signal conductor coupled to the second signal pad.

The described connector assemblies are useful in wire-to-board systems. Some assemblies include a free-end connector that is attached to a twin-ax cable, and a fixed-end connector that is attached to a board. Embodiments include a free-end terminal set including a first signal terminal, a second signal terminal and a ground plate. The ground plate has a horseshoe shape and provides a ground terminal on opposing sides of the first and second signal terminals. Additionally, embodiments include a locking system between the free-end connector and fixed-end connector, and lead designs for the fixed-end connector utilizing a similar horseshoe shape as that used for the ground plate of the free-end connector.

A wire and mold-member assembly (11, 12, 13) includes a plurality of differential transmission wires (20a to 20f) and a mold member (160, 260) situated at an end of the plurality of differential transmission wires and configured to bundle the plurality of differential transmission wires together. The mold member has a first face (160A, 260A) and a second face (160B, 260B) each intersecting with the plurality of differential transmission wires, and the second face is inclined at an angle greater than 0 degrees and less than 90 degrees relative to the first face.

A socket connector assembly for a communication system includes a socket connector having a socket housing holding socket contacts having deflectable spring beams. The socket connector assembly includes a cable assembly coupled to the socket connector having an outer housing holding a paddle card with paddle card contacts interfacing with the separable mating interfaces of the socket contacts. The cable assembly includes cables terminated to the paddle card coupled to corresponding paddle card contacts. The socket connector assembly includes a spring plate coupled to the outer housing secured to the host circuit board to press the cable assembly downward toward the host circuit board to compress the deflectable spring beams of the socket contacts.

A pluggable module is provided and includes a pluggable body including a cavity. The pluggable body extends between a mating end and a cable end opposite the mating end. The mating end is configured to be plugged into a receptacle connector assembly. The pluggable body has a top wall, a bottom wall, a first side wall at a first side, and a second side wall at a second side. The pluggable module includes a cable assembly coupled to the pluggable body. The cable assembly includes an upper module circuit card, a lower module circuit card, upper cables terminated to the upper module circuit card and lower cables terminated to the lower module circuit card. The upper module circuit card includes upper contact pads proximate to an upper mating edge. The lower module circuit card includes lower contact pads proximate to a lower mating edge.

The described connector assemblies are useful in wire-to-board systems. Some assemblies include a free-end connector that is attached to a twin-ax cable, and a fixed-end connector that is attached to a board. Embodiments include a free-end terminal set including a first signal terminal, a second signal terminal and a ground plate. The ground plate has a horseshoe shape and provides a ground terminal on opposing sides of the first and second signal terminals. Additionally, embodiments include a locking system between the free-end connector and fixed-end connector, and lead designs for the fixed-end connector utilizing a similar horseshoe shape as that used for the ground plate of the free-end connector.

A wire and mold-member assembly (11, 12, 13) includes a plurality of differential transmission wires (20a to 20f) and a mold member (160, 260) situated at an end of the plurality of differential transmission wires and configured to bundle the plurality of differential transmission wires together. The mold member has a first face (160A, 260A) and a second face (160B, 260B) each intersecting with the plurality of differential transmission wires, and the second face is inclined at an angle greater than 0 degrees and less than 90 degrees relative to the first face.

An electrical connector and an electrical connector assembly are provided. The electrical connector assembly includes: a mating assembly including a support plate and multiple insertion portions provided on the support plate and protruding downward out of the support plate; and an electrical connector. The electrical connector includes: a substrate, provided with multiple accommodating holes running through the substrate vertically; and multiple terminals accommodated in the accommodating holes. Each terminal has a base and two clamping portions configured to clamp a corresponding insertion portion. The two clamping portions are located in front of the base. A top end of the base is lower than top ends of the two clamping portions. When the two clamping portions jointly clamp the corresponding insertion portion, a portion of the corresponding insertion portion lower than the top ends of the clamping portions is located right above the base of an adjacent terminal.

A single-row electrical wire structure includes a first circuit board and a wire assembly. A board-to-board connector is on the first circuit board. The first circuit board includes a first group of contacts arranged into a single row. A distance between center portions of adjacent two contacts of the first group of contacts forms a width. The wires assembly includes a plurality of high-speed signal pairs and at least one low-speed signal pair respectively connected to the first group of contacts. A first spacing between a contact in the first group of contacts corresponding to a first high-speed signal pair of the high-speed signal pairs and a contact in the first group of contacts corresponding to a second high-speed signal pair of the high-speed signal pairs adjacent to the first high-speed signal pair is at least equal to or greater than 2 times of the width.

A pluggable module is provided and includes a pluggable body including a cavity. The pluggable body extends between a mating end and a cable end opposite the mating end. The mating end is configured to be plugged into a receptacle connector assembly. The pluggable body has a top wall, a bottom wall, a first side wall at a first side, and a second side wall at a second side. The pluggable module includes a cable assembly coupled to the pluggable body. The cable assembly includes an upper module circuit card, a lower module circuit card, upper cables terminated to the upper module circuit card and lower cables terminated to the lower module circuit card. The upper module circuit card includes upper contact pads proximate to an upper mating edge. The lower module circuit card includes lower contact pads proximate to a lower mating edge.