Electrical connector, electrical connector assembly, electrical connector with circuit board, and electrical connector assembly with circuit board

An electrical connector assembly comprising:

• a first electrical connector and a second electrical connector that is matingly connected to the first electrical connector,
• wherein the first electrical connector comprises a plurality of first signal transmission paths arranged spaced apart in an arrangement direction, where one direction parallel to the mounting surface of a circuit board serves as the arrangement direction,
• the first signal transmission paths are first transmission path pairs located spaced apart in the arrangement direction,
• the first transmission path pairs have two types of pairs, straight pairs and cross pairs, said straight pairs and said cross pairs being alternately disposed in the arrangement direction,
• the straight pairs extend spaced apart over the entire range from one end side to the other end side,
• when viewed in a width direction parallel to the mounting surface and perpendicular to the arrangement direction, the cross pairs are bent and overlapped so that the intermediate portions located between one end side and the other end side approach each other in the arrangement direction,
• the second electrical connector comprises a plurality of second signal transmission paths arranged spaced apart in the arrangement direction,
• the second signal transmission paths are second transmission path pairs located spaced apart in the arrangement direction,
• the second transmission path pairs form straight pairs,
• the second signal transmission paths arranged in the arrangement direction form a signal transmission path row, and
• a plurality of the signal transmission path rows are provided spaced apart in the width direction,
• of two adjacent signal transmission path rows, at least a part of the second transmission path pairs of one signal transmission path row in a height direction perpendicular to the mounting surface is offset in the arrangement direction with respect to the second transmission path pairs of the other signal transmission path row.

An electrical connector with a circuit board, in which the electrical connector comprises:

• a plurality of signal transmission paths arranged spaced apart in an arrangement direction, where one direction parallel to a mounting surface of a circuit board serves as the arrangement direction, is mounted on the circuit board,
• wherein the signal transmission paths are transmission path pairs located spaced apart in the arrangement direction,
• the transmission path pairs have two types of pairs, straight pairs and cross pairs, said straight pairs and said cross pairs being alternately disposed in the arrangement direction,
• the straight pairs extend spaced apart over the entire range from one end side to the other end side,
• when viewed in a width direction parallel to the mounting surface and perpendicular to the arrangement direction, the cross pairs are bent and overlapped so that intermediate portions located between one end side and the other end side approach each other in the arrangement direction,
• the circuit board comprises a signal circuit unit to which the signal transmission paths are soldered,
• the signal circuit unit has a plurality of lands that are located on the mounting surface of the circuit board corresponding to the signal transmission paths and to which the signal transmission paths are soldered, and a plurality of vias that are located in the thickness of the circuit board corresponding to various lands and which are electrically connected with the lands,
• the plurality of vias is arranged in the arrangement direction to form via rows, and two vias located adjacent to each other corresponding to the transmission path pairs form a via pair,
• a plurality of the via rows are provided spaced apart in the width direction,
• of two adjacent via rows, the via pairs in one via row are offset in the arrangement direction with respect to the via pairs of the other via row.

An electrical connector assembly with a circuit board, comprising:

• a first electrical connector, a second electrical connector that is matingly connected to the first electrical connector, and a circuit board on which the second electrical connector is mounted,
• wherein the first electrical connector comprises a plurality of first signal transmission paths arranged spaced apart in an arrangement direction, where one direction parallel to a mounting surface of the circuit board serves as the arrangement direction,
• the first signal transmission paths are first transmission path pairs located spaced apart in the arrangement direction,
• the first transmission path pairs have two types of pairs, straight pairs and cross pairs, said straight pairs and said cross pairs being alternately disposed in the arrangement direction,
• the straight pairs extend spaced apart over the entire range from one end side to the other end side,
• when viewed in a width direction parallel to the mounting surface and perpendicular to the arrangement direction, the cross pairs are bent and overlapped so that intermediate portions located between one end side and the other end side approach each other in the arrangement direction,
• the second electrical connector comprises a plurality of second signal transmission paths arranged spaced apart in the arrangement direction,
• the second signal transmission paths are second transmission path pairs located spaced apart in the arrangement direction,
• the second transmission path pairs form straight pairs,
• the circuit board comprises a signal circuit unit to which the signal transmission paths are soldered,
• the signal circuit unit has a plurality of lands that are located on the mounting surface of the circuit board corresponding to the second signal transmission paths and to which the signal transmission paths are soldered, and a plurality of vias that are located in the thickness of the circuit board corresponding to various lands and which are electrically connected with the lands,
• the plurality of vias are arranged in the arrangement direction to form via rows, and two vias located adjacent to each other corresponding to the second transmission path pairs form a via pair,
• of two adjacent via rows, the via pairs in one via row are offset in the arrangement direction with respect to the via pairs of the other via row.