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: 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: A magnetic element (100) includes a board unit (2) including a paddle board (21) having a row of first conductive vias (251) and a row of second conductive vias (252) for insertion of terminals (3), a number of embedded magnetic components (22), and a number of SMDs (surface mount devices) (23) mounted on the paddle board by SMT (surface mount technology). Each embedded magnetic component includes a magnetic core (221) embedded in the paddle board, and a number of PCB (printed circuit board) layout traces (222) disposed in the paddle board. Each PCB layout trace includes a first PCB layout trace (222a) encircling around the magnetic core and connecting with the first conductive via, and a second PCB layout trace (222b) encircling around the magnetic core and connecting with the SMD.

Abstract: A electrical connector assembly includes a mother board (3) having a number of circuit traces (31), an electrical connector (2) and a number of filter modules mounted on the mother board and situated away from the electrical connector. The electrical connector includes an insulative housing (20) and a number of contact terminals (30) assembled to the insulative housing and being mounted to the mother board along a first direction. The contact terminals are connected to the filter modules via the number of circuit traces of the mother board.

Abstract: A circuit board (100) includes a first shielding layer (20) extending horizontally, an accessorial shielding layer, a signal circuit layer (3) positioned between the first shielding layer and the accessorial shielding layer, and a circumferential shielding layer (6) surrounding the circuit board and electrically connecting with the first shielding layer and the accessorial shielding layer to improve shielding effect.

Abstract: A transformer (100) includes a bar-shaped core (5), a number of coils (7) comprising a first winding group (71, 72) and a second winding group (73, 74) wound around the core, a housing (1) receiving the core and the coils, and a number of conductive terminals (3) being secured in the housing. The first winding group and the second winding group wound around different parts of the core. The coils are soldered to the conductive terminals (3). The coils (7) are wound around the core automatically by an automatic winder. Therefore, the cost of manufacturing the transformer is decreased.

Abstract: A circuit board (100) includes a first shielding layer (20) extending horizontally, an accessorial shielding layer, a signal circuit layer (3) positioned between the first shielding layer and the accessorial shielding layer, and a circumferential shielding layer (6) surrounding the circuit board and electrically connecting with the first shielding layer and the accessorial shielding layer to improve shielding effect.

Abstract: An inductive component formed on a substrate (11) includes a number of conductive traces (111) exposed to air on the substrate, a core (13), and a number of terminals (12). The core is disposed on one side of the substrate and between the terminal and the conductive traces. The core is a toroidal core. The conductive traces connect with the terminals to form at least one conductive path winding around the core.

Abstract: A electrical connector assembly includes a mother board (3) having a number of circuit traces (31), an electrical connector (2) and a number of filter modules mounted on the mother board and situated away from the electrical connector. The electrical connector includes an insulative housing (20) and a number of contact terminals (30) assembled to the insulative housing and being mounted to the mother board along a first direction. The contact terminals are connected to the filter modules via the number of circuit traces of the mother board.

Abstract: A choke module (100) for connecting with a mother board includes a housing (1), a magnetic unit (2) and a number of terminals (3). The magnetic unit includes a paddle board (21) attached to the housing and having a number of conductive pads 9212) and conductive sections (211), a number of SMDs (Surface Mount Devices 22) surface mounted on the paddle board, and a number of magnetic components (23) each having a magnetic core (231) stacked on the corresponding SMD along a vertical direction and a plurality of wires (232) winding around the magnetic core and soldered on the conductive pads. The number terminals are electrically connected with the conductive sections and secured to the housing for connecting with the mother board.

Abstract: A modular jack connector (100) includes a contact module (2) having a paddle board (22) formed with two conductive sections (28b). The contact module includes two transformers (24) each including a magnetic core (271) embedded in the paddle board, and a number of PCB layout traces distributed in the paddle board and including a first group of PCB layout traces having one group of tips extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips connected to the conductive section, and a second group of PCB layout traces having one group of tips extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips connected to the vias. The common mode chokes are surface mounted on the conductive section.

Abstract: A transformer (100) includes a bar-shaped core (5), a number of coils (7) comprising a first winding group (71, 72) and a second winding group (73, 74) wound around the core, a housing (1) receiving the core and the coils, and a number of conductive terminals (3) being secured in the housing. The first winding group and the second winding group wound around different parts of the core. The coils are soldered to the conductive terminals (3). The coils (7) are wound around the core automatically by an automatic winder. Therefore, the cost of manufacturing the transformer is decreased.

Abstract: A modular jack connector (100) includes a contact module (2) having a paddle board (21) and a magnetic module (23). The magnetic module includes a number of magnetic cores (231) embedded in the paddle board, and a number of PCB layout traces (232, 233) arranged in each side face of the paddle board. The PCB layout traces on each side face includes a primary group of PCB layout traces (232a, 233a) having one group of tips (2322, 2331) extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips (2321, 2332) connected to a conductive section (2111, 2121) of the paddle board, and a secondary group of PCB layout traces (232b, 233b) having one group of tips (2323, 2333) extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips (2324, 2334) connected to vias of the paddle board.

Abstract: A magnetic element (100) includes a board unit (2) including a paddle board (21) having a row of first conductive vias (251) and a row of second conductive vias (252) for insertion of terminals (3), a number of embedded magnetic components (22), and a number of SMDs (surface mount devices) (23) mounted on the paddle board by SMT (surface mount technology). Each embedded magnetic component includes a magnetic core (221) embedded in the paddle board, and a number of PCB (printed circuit board) layout traces (222) disposed in the paddle board. Each PCB layout trace includes a first PCB layout trace (222a) encircling around the magnetic core and connecting with the first conductive via, and a second PCB layout trace (222b) encircling around the magnetic core and connecting with the SMD.

Abstract: A modular jack connector (100) includes a contact module (2) having a paddle board (22) formed with two conductive sections (28b). The contact module includes two transformers (24) each including a magnetic core (271) embedded in the paddle board, and a number of PCB layout traces distributed in the paddle board and including a first group of PCB layout traces having one group of tips extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips connected to the conductive section, and a second group of PCB layout traces having one group of tips extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips connected to the vias. The common mode chokes are surface mounted on the conductive section.

Abstract: A modular jack connector (100) includes a contact module (2) having a paddle board (21) and a magnetic module (23). The magnetic module includes a number of magnetic cores (231) embedded in the paddle board, and a number of PCB layout traces (232, 233) arranged in each side face of the paddle board. The PCB layout traces on each side face includes a primary group of PCB layout traces (232a, 233a) having one group of tips (2322, 2331) extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips (2321, 2332) connected to a conductive section (2111, 2121) of the paddle board, and a secondary group of PCB layout traces (232b, 233b) having one group of tips (2323, 2333) extending to a position adjacent to corresponding magnetic core to form a magnetic field and another group of tips (2324, 2334) connected to vias of the paddle board.