Electrical connector

An electrical connector for being mounted onto an external circuit board, the electrical connector having a plurality of differential signal channels and including a row of upper ports and a row of lower ports, the electrical connector comprising:

• an insulative housing having an opening for receiving a plug along a longitudinal direction;
• and
• a plurality of terminal modules received in the insulative housing, each terminal module including plural pairs of mating terminals, plural pairs of connecting terminals, plural pairs of foot terminals, and a plurality of circuit board component units, each of said circuit board component units including:
• a horizontal upper inner circuit board, a horizontal lower inner circuit board, the connecting terminals connecting to the upper inner circuit board and the lower inner circuit board, and a plurality of electronic components mounted onto each inner circuit board, the electronic components including a plurality of surface mounted transformers, each surface mounted transformer including a primary winding wire connected to one pair of mating terminals and a secondary winding wire connected to one pair of connecting terminals, the circuit board component unit further including a bottom circuit board, the bottom circuit board connecting said one pair of connecting terminals to said one pair of foot terminals.

An electrical connector comprising:

• a printed circuit board;
• and
• a plurality of transformers side by side located upon the printed circuit board in one line along a transverse direction, each of said transformers including a center core with opposite first and second flanges at two opposite ends in a lengthwise direction perpendicular to said transverse direction, each of said first and second flanges defining opposite first and second side sections respectively located by opposite first and second sides of the center core in said transverse direction, a primary coil wound about the center core with two ends located at the first side sections of said first and second flanges, respectively, and a secondary coil would about the a center core with two ends located at the second side sections of said first and second flanges;
• wherein
• for each of said transformers, the ends of the corresponding primary coil neighbors with those of the primary coil of a neighboring transformers located by the first side of the corresponding center core, and the ends of the corresponding secondary coil neighbors with those of the secondary coil of a neighboring transformers located by the second side of the corresponding center core.