Communication patch cord having a plug with contact blades connected to conductors of a cable
Communications plugs are provided which include a printed circuit board having a plurality of elongated conductive traces and a plurality of plug blades. Each plug blade has a first section that extends along a top surface of the printed circuit board and a second section that extends along a front edge of the printed circuit board. Additionally, each plug blade may have a thickness that is at least twice the thickness of the elongated conductive traces. The plug blades may be low profile plug blades that are manufactured separately from the printed circuit board.
1. A communications patch cord, comprising:
a cable that extends in a longitudinal direction, the cable including eight insulated conductors that are arranged as four twisted pairs of conductors;
a first plug that is mounted on a first end of the cable; and
a second plug that is mounted on the second end of the cable,
wherein the first plug includes:
a plug housing;
a printed circuit board mounted within the plug housing that includes a plurality of conductive paths;
first through eighth plug blades that are transversely aligned in a row on a top surface of the printed circuit board;
first through eighth metal-plated vias in the printed circuit board, wherein each of the conductors of the cable is terminated into a respective one of the metal-plated vias,
wherein the conductive paths electrically connect the first through eighth plug blades to respective ones of the first through eighth metal-plated vias.
2. The patch cord of claim 1 , wherein the metal-plated vias in the printed circuit board are arranged in at least two transverse rows.
3. The patch cord of claim 1 , wherein the conductors of each twisted pair of conductors including a longitudinal portion that extends into the plug housing and end portions thereof are bent upwardly for insertion into the respective metal-plated vias in the printed circuit board.
4. The patch cord of claim 3 , Wherein the longitudinal portion of the conductors of a first of the twisted pairs of conductors is located at a first distance below a bottom surface of the printed circuit board and the longitudinal portion of the conductors of a second of the twisted pairs of conductors is located at a second distance below the bottom surface of the printed circuit board, where the first distance is greater than the second distance.
5. The patch cord of claim 4 , wherein the longitudinal portion of the conductors of a third of the twisted pairs of conductors is located at a third distance below a bottom surface of the printed circuit board, where the third distance is greater than the second distance but less than the first distance.
6. The patch cord of claim 3 , wherein the longitudinal portion of the conductors of each of the twisted pairs of conductors is maintained as a twisted pair until the conductors are bent upwardly for insertion into the respective metal-plated vias in the printed circuit board.
7. The patch cord of claim 1 , wherein the four twisted pairs of conductors are maintained in substantially the same position within a portion of the plug housing as the four twisted pairs of conductors are arranged within the cable.
8. The patch cord of claim 1 , wherein each of the eight conductors is soldered into a respective one of the metal-plated vias.
9. The patch cord of claim 1 , wherein each of the eight conductors is press-fit into a respective one of the metal-plated vias.
10. The patch cord of claim 1 , wherein a first subset of the eight conductors are terminated into respective ones of the metal-plated vias from the top surface of the printed circuit board, and a second subset of the eight conductors are terminated into respective ones of the metal-plated vias from the bottom surface of the printed circuit board.
11. The patch cord of claim 1 , wherein the metal-plated vias in the printed circuit board are arranged in three rows.
12. The patch cord of claim 11 , wherein the first conductor is electrically connected to the first plug blade, the second conductor is electrically connected to the second plug blade, the third conductor is electrically connected to the third plug blade, the fourth conductor is electrically connected to the fourth plug blade, the fifth conductor is electrically connected to the fifth plug blade, the sixth conductor is electrically connected to the sixth plug blade, the seventh conductor is electrically connected to the seventh plug blade, and the eighth conductor is electrically connected to the eighth plug blade, wherein the first through eighth plug blades are aligned in the row in numerical order, and wherein distances between the first, second, seventh and eighth metal-plated vias and the respective first, second, seventh and eighth plug blades are less than distances between the third through sixth metal-plated vias and the respective third through sixth plug blades.
13. A communications patch cord, comprising:
a cable that includes eight insulated conductors that are arranged as four twisted pairs of conductors;
a first plug that is mounted on a first end of the cable; and
a second plug that is mounted on the second end of the cable,
wherein the first plug includes:
a plug housing that receives the first end of the cable along a longitudinal direction of the plug housing;
a printed circuit board mounted within the plug housing, the printed circuit board including first through eighth contact pads that are transversely aligned in a row on a top surface thereof;
each of the conductors being electrically connected to respective one of the eight contact pads;
first through eighth plug blades that are soldered to the respective first through eighth contact pads, wherein each of the plug blades comprises a first section that extends longitudinally along its respective contact pad and a curved transition section that extends from an end of the first section, the transition section contacting the printed circuit board.
14. The patch cord of claim 13 , wherein each plug blade further includes a second section that extends from the respective transition section along a front edge of the printed circuit board.
15. The patch cord of claim 13 , further comprising an offending crosstalk capacitor on the printed circuit board that is electrically connected between the first plug blade and the second plug blade.
16. The patch cord of claim 13 , wherein each of the plug blades has a thickness of at least 3 mils so that a top surface of each plug blade is at least 3 mils above a top surface of the printed circuit board.
17. The patch cord of claim 16 , wherein each of the plug blades has a thickness of no more than 10 mils.
18. The patch cord of claim 13 , wherein each of the plug blades has an L-shape.
19. The patch cord of claim 13 , wherein the first section of each plug blade is exposed by a respective one of a plurality of slots in the plug housing.
20. The patch cord of claim 13 , wherein the curved transition section curves through an angle of approximately ninety degrees.