A connector is mountable on an object in an up-down direction and mateable with a mating connector along a front-rear direction perpendicular to the up-down direction. The mating connector comprises first mating contacts and second mating contacts. The connector comprises a holding member, first contacts and second contacts. Each of the first contacts has a first contact portion, a first fixed portion and a first coupling portion. The first contact portions are brought into contact with the first mating contacts. Each of the second contacts has a second contact portion, a second fixed portion and a second coupling portion. The second contact portions are brought into contact with the second mating contacts. The first coupling portions of the first contacts and the second coupling portions of the second contacts overlap with each other. The second coupling portion intersects with both the front-rear direction and the up-down direction.

A connector is mountable on an object in an up-down direction and mateable with a mating connector along a front-rear direction perpendicular to the up-down direction. The mating connector comprises first mating contacts and second mating contacts. The connector comprises a holding member, first contacts and second contacts. Each of the first contacts has a first contact portion, a first fixed portion and a first coupling portion. The first contact portions are brought into contact with the first mating contacts. Each of the second contacts has a second contact portion, a second fixed portion and a second coupling portion. The second contact portions are brought into contact with the second mating contacts. The first coupling portions of the first contacts and the second coupling portions of the second contacts overlap with each other. The second coupling portion intersects with both the front-rear direction and the up-down direction.

A communication device is provided wherein a number of the pairs of transmission lines is N, each pair of the transmission lines comprises (N1) stages of sub-transmission lines generating a same amount of crosstalk as that caused at a connector, and (N1) stages of connecting portions comprise a transmission path of the connector and a first stage sub-transmission line, and (N1) stages of the connecting portions to connect an i th stage sub-transmission line and an (i+1) th stage sub-transmission line by the straight/cross connection, and wherein each pair of the transmission lines is different in all pairs in a number of the connecting portion having the cross connection; and as a j th stage connecting portion in any one pair of the transmission lines has cross connection, a (Nj) th stage connecting portion in the any one pair of the transmission lines also has cross connection.

An electrical connector includes a housing and a plurality of terminal wafers. The housing is formed with a plurality of terminal slots along a traverse direction. The terminal wafers are contiguous to each other and retained in the housing. Each terminal wafer has a first terminal, a second terminal and a packaging body. The first terminal has a first contacting section, a first soldering portion and a first embedded section. The second terminal has a second contacting section, a second soldering portion and a second embedded section. The first and second contacting sections are extended along a plugging direction into one corresponding terminal slot. The packaging body wraps the first and second embedded sections. A curve contour of the first embedded section is corresponded to a curve contour of the second embedded section, so that an attachment relationship is configured with substantial identical distance therebetween.

An electrical connector includes differential signal pairs, a ground terminal and a side plate. Each differential signal pair includes two signal terminals. Each signal terminal includes a signal contact section and a signal transition section connected forward to the signal contact section. A tight coupling exists between two signal transition sections. The side plate and the ground terminal are electrically conductive. The ground terminal and the differential signal pairs are arranged along a left-right direction. Viewing from a vertical direction, the side plate is located between the ground terminal and the differential signal pairs. Along the left-right direction, two plate surfaces of the side plate are opposite to each other, and a projection of the side plate overlaps with a projection of the signal transition section. That is, shielding is added at the side of the signal transition section, thereby reducing the crosstalk between differential signal pairs.

An electrical connector includes differential signal pairs, a ground terminal and a side plate. Each differential signal pair includes two signal terminals. Each signal terminal includes a signal contact section and a signal transition section connected forward to the signal contact section. A tight coupling exists between two signal transition sections. The side plate and the ground terminal are electrically conductive. The ground terminal and the differential signal pairs are arranged along a left-right direction. Viewing from a vertical direction, the side plate is located between the ground terminal and the differential signal pairs. Along the left-right direction, two plate surfaces of the side plate are opposite to each other, and a projection of the side plate overlaps with a projection of the signal transition section. That is, shielding is added at the side of the signal transition section, thereby reducing the crosstalk between differential signal pairs.

An electrical connector and a ground system which includes ground contacts and ground shields positioned proximate the ground contacts. The ground contacts have receiving sections, securing sections and mounting sections. The receiving sections have first engagement portions and second engagement portions. The ground shields have a nonplanar configuration, with portions of the ground shields passing between signal contacts. Surfaces of the securing sections of the ground contacts are positioned in mechanical and electrical engagement with surfaces of the ground shields, providing first ground contact areas across which ground currents may flow. The first engagement portions of the ground contacts are provided in electrical and mechanical engagement with the surfaces of the ground shields, providing second ground contact areas across which the ground currents may flow. The second ground contact areas are spaced from the first ground contact areas to allow the ground currents to properly flow through the entire ground shields.

An electrical connector and a ground system which includes ground contacts and ground shields positioned proximate the ground contacts. The ground contacts have receiving sections, securing sections and mounting sections. The receiving sections have first engagement portions and second engagement portions. The ground shields have a nonplanar configuration, with portions of the ground shields passing between signal contacts. Surfaces of the securing sections of the ground contacts are positioned in mechanical and electrical engagement with surfaces of the ground shields, providing first ground contact areas across which ground currents may flow. The first engagement portions of the ground contacts are provided in electrical and mechanical engagement with the surfaces of the ground shields, providing second ground contact areas across which the ground currents may flow. The second ground contact areas are spaced from the first ground contact areas to allow the ground currents to properly flow through the entire ground shields.

A composite mounting type electrical connector includes an insulating shell, a plurality of terminals and a plurality of shielding members. The terminals are arranged in two rows parallel to each other, and the shielding members are arranged between the two rows of terminals and separated from each other by a predetermined distance to form insulation. The two rows of terminals are soldered to a circuit board by surface mounting technology and dual in line package process respectively. The ground terminals in the two columns of terminals are commonly connected to a shield member to form a common ground structure. The power terminals in the two columns of terminals are commonly connected to another shielding member to form a parallel connecting structure.