Abstract: An electrical connector includes an insulating body and first through eighth terminals sequentially arranged in a lateral direction in the insulating body, wherein the first and second terminals, the third and sixth terminals, the fourth and fifth terminals, and the seventh and eighth terminals are respectively used to transmit a pair of differential signals, each terminal including: a mating portion for mating to a mating connector; a tail portion opposite to the mating portion; and a connecting portion connected therebetween, the connecting portions of the third terminal to the fifth terminal are all provided with a coupling portion; wherein the coupling portions of the third through fifth terminals are in three different planes, respectively, and the coupling portion of the fifth terminal and the coupling portion of the third terminal at least partially overlap in a longitudinal direction perpendicular to the lateral direction.

Abstract: An electrical connector includes a terminal module having a circuit board having first through eighth conductive traces sequentially arranged in a transverse direction and corresponding first through eighth terminals, the third terminal and the sixth terminal being configured for transmitting a pair of differential signals, the fourth terminal and the fifth terminal being configured for transmitting another pair of differential signals, the first through eighth conductive traces being respectively electrically connected to corresponding first through eighth terminals, each of the third conductive trace and the fifth conductive trace including a coupling portion, a size of the coupling portion in the transverse direction is larger than a size of the other part of the corresponding conductive trace in the transverse direction, wherein the coupling portion of the third conductive trace and the coupling portion of the fifth conductive trace overlap in an up and down direction to increase mutual coupling.

Abstract: A terminal module includes a circuit board having: an upper layer having a row of upper conductive pads; a lower layer having a row of lower conductive pads; a first upper signal layer having upper conductive vias and a first upper inner conductive trace connecting with corresponding upper conductive pads through the upper conductive vias; a first lower signal layer having lower conductive vias and a first lower inner conductive trace connecting with corresponding lower conductive pads through the lower conductive vias; and a ground isolation layer; and a row of upper mating terminals connected to the upper conductive pad, and a row of lower mating terminals connected to the lower conductive pad; wherein neither the upper conductive via nor the lower conductive via passes through the ground isolation layer, and the ground isolation layer shields electromagnetic interference between the upper mating terminals and the lower mating terminals.

Abstract: An electrical connector for mounting on an external circuit board includes: an insulating body; a terminal module assembled on the insulating body and including a plurality of mating terminals, an insulating carrier with an accommodating cavity, plural intermediate terminals fixed on one side of the insulating carrier and electrically connected to the mating terminals, plural pin terminals fixed on the other side of the insulating carrier, and a magnetic module accommodated in the accommodating cavity and electrically connected to the intermediate terminals and the pin terminals, wherein the insulating carrier is a two-piece housing, the intermediate terminals are held in one housing piece, and the pin terminals are held in the other housing piece.

Abstract: An electrical connector includes: an insulating body defining a mating space; and a terminal module assembled to the insulating body and having a circuit board and plural mating terminals mounted on the circuit board, wherein: each of the mating terminals has a contact portion extending obliquely backward, a bending portion bent backward from a front end of the contact portion, a connecting portion extending rearward from a rear end of the bending portion, and a mounting portion vertically extending from a rear end of the connecting portion for mounting on the circuit board; and a front end of the circuit board extends forward into the mating space.

Abstract: An electrical connector for mounting on an external circuit board includes: an insulating body having an upper receiving space and a lower receiving space; a terminal module assembled on the insulating body and including plural pin terminals, each pin terminal having a pin for mounting on the external circuit board, wherein the terminal module is capable of being modified to support 1G or 2.5G or 5G or 10G or 25G or 40G signal transmission while keeping arrangement pattern of the pins unchanged in order to be mounted on the same external circuit board.

Abstract: An electrical connector includes an insulating body and first through eighth terminals sequentially arranged in a lateral direction in the insulating body, wherein the first and second terminals, the third and sixth terminals, the fourth and fifth terminals, and the seventh and eighth terminals are respectively used to transmit a pair of differential signals, each terminal including: a mating portion for mating to a mating connector; a tail portion opposite to the mating portion; and a connecting portion connected therebetween, the connecting portions of the third terminal to the fifth terminal are all provided with a coupling portion; wherein the coupling portions of the third through fifth terminals are in three different planes, respectively, and the coupling portion of the fifth terminal and the coupling portion of the third terminal at least partially overlap in a longitudinal direction perpendicular to the lateral direction.

Abstract: A magnetic module includes: a magnetic core; and plural enameled wires wound on the magnetic core, the enameled wire being wound on the magnetic core to form a primary coil and a secondary coil, the primary coil forming a primary input end, a primary output end, and a primary center tap, the secondary coil forming a secondary input end, a secondary output end, and a secondary center tap, wherein one of the primary coil and the secondary coil includes four groups of enameled wires, and the other includes one group of enameled wires.

Abstract: A magnetic module includes: a magnetic core; and plural enameled wires wound on the magnetic core, the enameled wire being wound on the magnetic core to form a primary coil and a secondary coil, the primary coil including a first group of enameled wires and a second group of enameled wires, the secondary coil including a third group of enameled wires and a fourth group of enameled wires, wherein the parts of the first group of enameled wires and the fourth group of enameled wires wound around the magnetic core are twisted together to form a first stranded wire, the parts of the second group of enameled wires and the third group of enameled wires wound around the magnetic core are twisted together to form a second stranded wire, and the first stranded wire and the second stranded wire are twisted together to form a total stranded wire.

Abstract: An electrical connector includes a terminal module having a circuit board having first through eighth conductive traces sequentially arranged in a transverse direction and corresponding first through eighth terminals, the third terminal and the sixth terminal being configured for transmitting a pair of differential signals, the fourth terminal and the fifth terminal being configured for transmitting another pair of differential signals, the first through eighth conductive traces being respectively electrically connected to corresponding first through eighth terminals, each of the third conductive trace and the fifth conductive trace including a coupling portion, a size of the coupling portion in the transverse direction is larger than a size of the other part of the corresponding conductive trace in the transverse direction, wherein the coupling portion of the third conductive trace and the coupling portion of the fifth conductive trace overlap in an up and down direction to increase mutual coupling.

Abstract: A magnetic module includes: a magnetic core; a primary coil wound on the magnetic core, the primary coil includes a first group of enameled wires and a second group of enameled wires; a secondary coil wound on the magnetic core, the secondary coil includes a third group of enameled wires and a fourth group of enameled wires, wherein the number of enameled wires of the third group of enameled wires is the same as that of the fourth group of enameled wires, the number of enameled wires of the first group is the same as that of the second group of enameled wires, and the number of the first group of enameled wires and the second group of enameled wires is greater than the number of the third group of enameled wires and the fourth group of enameled wires.

Abstract: An electrical connector includes: an insulative housing; and an inserting module positioned in the insulative housing and including a transformer, the transformer comprising: a magnetic core having a central opening; and a first and second wire groups each including plural wires, each wire having a central portion, a first end, and an opposite second end, the central portions of each wire group wound around the magnetic core through the central opening, wherein the first and second wire groups joint to function as a primary winding and a secondary winding of the transformer, and a wire diameter of the secondary winding is greater than a wire diameter of the primary winding.

Abstract: A transformer (100) includes a magnetic core (1), a primary coil (2), and a secondary coil (3) wound around the magnetic core (1), the primary coil including a first enameled wire (21) and a second enameled wire (22), one end of the first enameled wire and one end of the second enameled wire forming a first center tap (23) twisted into a bundle, the secondary coil including a third enameled wire (31) and a fourth enameled wire (32), one end of the third enameled wire and one end of the fourth enameled wire forming a second center tap (33) twisted into another bundle, the transformer (100) having only four enameled wires and the first center tap (23) is cross with the second center tap (33).

Abstract: The network filtering circuit includes a cable side for connection with a network cable, a physical side for connection with a mother board, and a plurality of transmission channels connected between the cable side and the physical side. Each of the transmission channels includes a first transmission line and a second transmission line with a CMC linked therebetween. Two filtering (Y type) capacitors are further linked between the first transmission line and the second transmission line with a middle line connected between the two filtering capacitors and having an extension line wherein in such an extension line there are a resistor and an optional adjusting capacitor to a ground node at the end in series connection.

Abstract: An electrical connector includes: an insulative housing; and an inserting module positioned in the insulative housing and including a transformer, the transformer comprising: a magnetic core having a central opening; and a first and second wire groups each including plural wires, each wire having a central portion, a first end, and an opposite second end, the central portions of each wire group wound around the magnetic core through the central opening, wherein the first and second wire groups joint to function as a primary winding and a secondary winding of the transformer, and a wire diameter of the secondary winding is greater than a wire diameter of the primary winding.

Abstract: A printed circuit board assembly includes a printed circuit board, a number of electronic components mounted thereon, and a number of conductive traces electrically connecting the components to form a number of transmission channels. Each of the channels has first and second transmission routes for transmitting differential signals. Each channel includes a common mode choke, a pair of capacitors, and an autotransformer. The common mode choke includes a first coil series connection with the first transmission route and a second coil series connection with the second transmission route. The capacitors include a first capacitor series connection with the first transmitting route and a second capacitor series connection with the second transmitting route.

Abstract: The network filtering circuit includes a cable side for connection with a network cable, a physical side for connection with a mother board, and a plurality of transmission channels connected between the cable side and the physical side. Each of the transmission channels includes an isolation transformer with a primary coil connected with the cable side and a secondary coil coupling with the primary coil. A common mode choke has two first ends connected to the physical side and two opposite second ends. A pair of capacitors series connection with the corresponding second ends and are connected between the secondary coil and the common mode choke. The primary coil has a first center tap directly connected to a ground node.

Abstract: A transformer (100) includes a magnetic core (1), a primary coil (2), and a secondary coil (3) wound around the magnetic core (1), the primary coil including a first enameled wire (21) and a second enameled wire (22), one end of the first enameled wire and one end of the second enameled wire forming a first center tap (23) twisted into a bundle, the secondary coil including a third enameled wire (31) and a fourth enameled wire (32), one end of the third enameled wire and one end of the fourth enameled wire forming a second center tap (33) twisted into another bundle, the transformer (100) having only four enameled wires and the first center tap (23) is cross with the second center tap (33).

Abstract: The network filtering circuit includes a cable side for connection with a network cable, a physical side for connection with a mother board, and a plurality of transmission channels connected between the cable side and the physical side. Each of the transmission channels includes an autotransformer with a center tap sequentially connected by a capacitor and a resistor in series connection wherein a power supply is connected to a position of a circuit between the capacitor and the center tap, and another capacitor having a higher capacitance is linked to the resistor opposite to the capacitor. All transmission channels share the same capacitor having the higher capacitance to a same ground node.

Abstract: The network filtering circuit includes a cable side for connection with a network cable, a physical side for connection with a mother board, and a plurality of transmission channels connected between the cable side and the physical side. Each of the transmission channels includes a first transmission line and a second transmission line with a CMC linked therebetween.