Electrical Connector

A electrical connector, comprising:

• a plurality of first terminals arranged in a first terminal row, and each of the first terminals includes a first joint portion joined with a counterpart connector, a soldering portion welded to a pad of a circuit board, and a first connecting portion connecting the first joint portion and the soldering portion;
• a plurality of second terminals arranged in a second terminal row parallel to the first terminal row, each of the second terminals includes a second joint portion joined with a counterpart connector, an insertion portion inserted into a through hole of the circuit board, and a second connection portion connecting the second joint portion and the insertion portion, wherein each of the first terminal row and the second terminal row includes a pair of regular signal terminals, two functional terminals respectively arranged on opposite sides of the regular signal terminal pair, two power supply terminals respectively arranged on one side of the two functional terminals, two differential terminal pairs respectively arranged on one side of the two power supply terminals and two ground terminals respectively arranged on one side of the two differential terminal pairs, electronic signal characteristics of the first terminals of the first terminal row and the second terminals of the second terminal row are arranged in opposite order to each other, and the first terminals and the second terminals are symmetrically arranged with respect to the central line of the conventional signal terminal pair;
• and
• a plurality of shielding spacers arranged between the first terminal row and the second terminal row and are separated from each other by a predetermined distance for insulation, the shielding spacers include two outer shielding spacers, two inner shielding spacers and a middle shielding spacer, each of the outer shielding spacers corresponds to one of the ground terminals and a pair of differential terminal pairs, each of the inner shielding spacers corresponds to one of the functional terminals and one of the power supply terminals, and the middle shielding spacer corresponds to the regular signal terminal pair, the outer shielding spacers and the inner shielding spacers are arranged symmetrically with respect to the middle shielding spacer;
• wherein the first joint portion of the ground terminal of the first terminal row and the second joint portion of the corresponding ground terminal of the second terminal row are electrically connected to opposite sides of the outer shielding spacer;
• wherein the first joint portion of the power terminal of the first terminal row and the second joint portion of the corresponding power terminal of the second terminal row are electrically connected to opposite sides of the inner shielding spacer;
• wherein a distance from the first abutting portion of each first terminal of the first terminal row to the corresponding shielding spacer and a distance from the first connecting portion to the corresponding shielding spacer are equal, and the distance is defined as a first distance;
• wherein a distance from the second joint portion of each second terminal of the second terminal row to the corresponding shielding spacer and a distance from the second connecting portion to the corresponding shielding spacer are equal, and the distance is defined as a second distance;
• wherein the first distance is equal to the second distance;
• wherein a differential terminal of the differential terminal pairs close to the pair of power terminals has a projection on the corresponding outer shielding spacer not exceeding the edge of the corresponding outer shielding spacer.