Amphenol Corporation

Teradyne, Inc.

Huilin Ren

Mark W Gailus

Marc Benard Cartier, Jr

Philip T Stokoe

Donald A Girard, Jr

Jason J Payne

Thomas S Cohen

Trent K Do

Tom Pitten

Leon Khilchenko

Neil J Bacon

A printed circuit board includes a plurality of layers including conductive layers separated by dielectric layers; and at least one via configured for solder attachment to a connector lead of a surface mount connector, the at least one via including a conductive element that extends from an upper surface of the printed circuit board through one or more of the plurality of layers, the conductive element having a recess in a surface thereof. The recess is configured to receive a tip portion of the connector lead of the surface mount connector. The printed circuit board may have via patterns including signal vias and ground vias.

Backplane footprint for high speed, high density electrical connectors

A broadside coupled connector assembly has two sets of conductors, each separate planes. By providing the same path lengths, there is no skew between the conductors of the differential pair and the impedance of those conductors is identical. The conductor sets are formed by embedding the first set of conductors in an insulated housing having a top surface with channels. The second set of conductors is placed within the channels so that no air gaps form between the two sets of conductors. A second insulated housing is filled over the second set of conductors and into the channels to form a completed wafer. The ends of the conductors are received in a blade housing. Differential and ground pairs of blades have one end that extends through the bottom of the housing having a small footprint. An opposite end of the pairs of blades diverge to connect with the wafers. The ends of the first and second sets of conductors and the blades are jogged in both an x- and y-coordinate to reduce crosstalk and improve electrical performance.

High speed, high density electrical connector

Method of forming an electrical connector

A broadside coupled connector assembly has two sets of conductors, each separate planes. By providing the same path lengths, there is no skew between the conductors of the differential pair and the impedance of those conductors is identical. The conductor sets are formed by embedding the first set of conductors in an insulated housing having a top surface with channels. The second set of conductors is placed within the channels so that no air gaps form between the two sets of conductors. A second insulated housing is filled over the second set of conductors and into the channels to form a completed wafer. The ends of the first and second sets of conductors and the blades are jogged in both an x- and y-coordinate to reduce crosstalk and improve electrical performance.

An interconnection system that includes a daughter card and backplane electrical connectors, each mounted to a printed circuit board at a connector footprint. The backplane connector has conductive elements with transition regions that allow the mating contact portions to be positioned on a uniform pitch while contact tail portions can be shaped to improve signal integrity or to provide a more compact and/or mechanically robust footprint. The conductive elements in both connectors are configured such that the contact tails of the ground conductors align from column to column, but the planar portions of the ground conductors in one column align with a pair of signal conductors in the other column, which improves mechanical and signal integrity. Mechanical integrity may be improved by forming the connector footprints with pads for the ground conductors that span multiple columns.

High density electrical connector and PCB footprint

An interconnection system that includes a daughter card and backplane electrical connectors mounted to printed circuit boards at connector footprints. The spring rate of beam-shaped contacts in the daughter card connector increases while mating with the backplane connector so that the retention force may be greater than the insertion force. Such a change in spring rate may be achieved by positioning the beam-shaped contacts adjacent a surface of a connector housing. That surface may include a projection that aligns with the beam-shaped contact. When the connectors are unmated, the beam-shaped contact may be spaced from the projection. As the connectors begin to mate, a central portion of the beam-shaped contact may be pressed against the projection, which has the effect of shortening the beam length and increasing its stiffness.

High density electrical connector with variable insertion and retention force

In the preferred embodiment, there is disclosed a printed circuit board having a surface providing a mating interface to which is electrically connected an electrical connector having signal conductors and ground conductors. The printed circuit board includes a plurality of stacked dielectric layers, with a conductor disposed on at least one of the plurality of dielectric layers. The mating interface includes a plurality of conductive vias aligned in a plurality of rows, with the plurality of conductive vias extending through at least a portion of the plurality of dielectric layers, at least one of the plurality of conductive vias intersecting the conductor. The plurality of conductive vias includes signal conductor connecting conductive vias and ground conductor connecting conductive vias. For each of the plurality of rows of the conductive vias, there are at least twice as many ground conductor connecting conductive vias as signal conductor connecting conductive vias and the conductive vias are positioned relative to one another so that for each signal conductor connecting conductive via, there are ground conductor connecting conductive vias adjacent either side of the signal conductor connecting conductive via.

Printed circuit board for high speed, high density electrical connector with improved cross-talk minimization attenuation and impedance mismatch characteristics

Printed circuit board for high speed, high density electrical connector with improved cross-talk minimization, attenuation and impedance mismatch characteristics

In one embodiment of the invention, there is disclosed an electrical connector connectable to a printed circuit board on one end, which includes an insulative housing and a plurality of insulative posts disposed in the insulative housing, with the insulative posts arranged in at least one row. Each of the insulative posts has a first side and a second side, and the insulative posts extend in a direction away from the printed circuit board. A plurality of signal conductors are provided, with each signal conductor having a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion therebetween that is disposed in the insulative housing, wherein the signal conductors are disposed along the first side of the insulative posts. A plurality of ground conductors are provided, with each ground conductor having a first contact end connectable to the printed circuit board, a second contact end, and an intermediate portion therebetween that is disposed in the insulative housing, wherein the ground conductors are disposed along the second side of the insulative posts such that the signal conductors and the ground conductors are electrically isolated from one another.

High speed, high density electrical connector and connector assembly

In one embodiment of the invention, there is disclosed an electrical connector connectable to a printed circuit board, and having ground conductors and signal conductors in a plurality of rows. Each of the plurality of rows includes a plurality of ground conductors and signal conductors, with each signal conductor having at least one corresponding ground conductor. Each signal conductor has a contact tail that electrically connects to the printed circuit board, and each corresponding ground conductor has at least two contact tails that electrically connect to the printed circuit board. The contact tails of the signal conductors and the ground conductors are positioned relative to one another so that for each signal conductor contact tail, there are ground conductor contact tails adjacent either side of the signal conductor contact tail.

In one embodiment of the invention, there is disclosed an electrical connector attachable to a printed circuit board and including an insulative housing. A plurality of signal conductors are provided, with each signal conductor having a first contact end, a second contact end, and an intermediate portion therebetween that is disposed in the insulative housing. A plurality of corresponding shield strips are provided, with each shield strip having a first contact end, a second contact end, and an intermediate portion therbetween that is disposed in the insulative housing adjacent one of the plurality of singnal conductors. Each intermediate portion of the shield strip has a surface with a first edge and a second edge, at least one of the first edge or the second edge being bent such that when the plurality of signal conductors and the corresponding shield strips are disposed in the insulative housing, the bent edge of the intermediate portion is directed toward the corresponding signal conductor.

Growing community of inventors

Amherst, NH, United States of America

Huilin Ren