WO2004008585A1 - Board mounted electrical connector with improved ground terminals - Google Patents

Board mounted electrical connector with improved ground terminals Download PDF

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Publication number
WO2004008585A1
WO2004008585A1 PCT/US2003/021187 US0321187W WO2004008585A1 WO 2004008585 A1 WO2004008585 A1 WO 2004008585A1 US 0321187 W US0321187 W US 0321187W WO 2004008585 A1 WO2004008585 A1 WO 2004008585A1
Authority
WO
WIPO (PCT)
Prior art keywords
housing
signal terminals
portions
electrical connector
ground plates
Prior art date
Application number
PCT/US2003/021187
Other languages
French (fr)
Other versions
WO2004008585A9 (en
Inventor
Padrig Mcdaid
Kent D. Waddell
Denise Brennan
Eugene Folan
John M. Horgan
Enda Kelly
Joseph Mccarthy
Brian Murphy
John Wallace
Original Assignee
Molex Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Molex Incorporated filed Critical Molex Incorporated
Priority to EP03764367A priority Critical patent/EP1552585A1/en
Priority to AU2003261117A priority patent/AU2003261117A1/en
Priority to JP2004521545A priority patent/JP4113535B2/en
Publication of WO2004008585A1 publication Critical patent/WO2004008585A1/en
Publication of WO2004008585A9 publication Critical patent/WO2004008585A9/en

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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R12/00—Structural associations of a plurality of mutually-insulated electrical connecting elements, specially adapted for printed circuits, e.g. printed circuit boards [PCB], flat or ribbon cables, or like generally planar structures, e.g. terminal strips, terminal blocks; Coupling devices specially adapted for printed circuits, flat or ribbon cables, or like generally planar structures; Terminals specially adapted for contact with, or insertion into, printed circuits, flat or ribbon cables, or like generally planar structures
    • H01R12/70—Coupling devices
    • H01R12/71—Coupling devices for rigid printing circuits or like structures
    • H01R12/72—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures
    • H01R12/722—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits
    • H01R12/724—Coupling devices for rigid printing circuits or like structures coupling with the edge of the rigid printed circuits or like structures coupling devices mounted on the edge of the printed circuits containing contact members forming a right angle
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/646—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00 specially adapted for high-frequency, e.g. structures providing an impedance match or phase match
    • H01R13/6461—Means for preventing cross-talk
    • H01R13/6471—Means for preventing cross-talk by special arrangement of ground and signal conductors, e.g. GSGS [Ground-Signal-Ground-Signal]
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6581—Shield structure
    • H01R13/6585—Shielding material individually surrounding or interposed between mutually spaced contacts
    • H01R13/6589—Shielding material individually surrounding or interposed between mutually spaced contacts with wires separated by conductive housing parts
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/648—Protective earth or shield arrangements on coupling devices, e.g. anti-static shielding  
    • H01R13/658—High frequency shielding arrangements, e.g. against EMI [Electro-Magnetic Interference] or EMP [Electro-Magnetic Pulse]
    • H01R13/6591—Specific features or arrangements of connection of shield to conductive members
    • H01R13/6594—Specific features or arrangements of connection of shield to conductive members the shield being mounted on a PCB and connected to conductive members

Definitions

  • This invention generally relates to the art of electrical connectors and, particularly, to a connector for mounting on a printed circuit board and including ground terminals or plates disposed between a plurality of signal terminals.
  • a conventional surface mount electrical connector for mounting on a printed circuit board includes an insulative or dielectric housing having a plurality of conductive terminals arranged within the housing in a predetermined spacing, such as in one or more rows. Each of the terminals has a solder tail projecting from the housing to a surface of the printed circuit board. The solder tails are fixed to conductive circuit traces on the circuit board by soldering techniques.
  • ground terminals or plates are disposed between at least some of the signal terminals in order to control impedance and to reduce cross-talk between the signal terminals.
  • the ground terminals or plates also have solder tails for connection to appropriate ground circuit traces on the printed circuit board.
  • the ground plates are sized and shaped either to be mirror images of the signal terminals, or the signal terminals are disposed substantially within longitudinal profiles of the ground plates in order to eliminate or at least reduce cross-talk between the terminals.
  • the ground plates have solder tails for connection to the ground circuit traces on the printed circuit board, either the solder tails lack sufficient flexibility or they do not provide a true mirror image of the signal terminals.
  • the present invention is directed to solving these problems with improved ground terminals or plates in such surface mounted electrical connectors.
  • the connector includes an elongated dielectric housing having a front mating end and a rear terminating end.
  • a plurality of signal terminals are mounted on the housing and are spaced longitudinally thereof.
  • Each signal terminal includes a contact portion at the mating end of the housing for contacting an appropriate terminal of a complementary connecting device, and a tail portion at the terminating end of the housing for connection to an appropriate signal circuit trace on the printed circuit board.
  • a plurality of ground plates are mounted on the housing between at least some of the signal terminals.
  • Each ground plate includes a body portion, a front portion projecting forwardly of the body portion at the mating end of the housing, and a tail portion projecting rearwardly of the body portion at the terminating end of the housing for connection to an appropriate ground trace on the printed circuit board.
  • the signal terminals are disposed substantially within the longitudinal profiles of the body portions and front portions of the ground plates in a direction longitudinally of the housing, with the tail portions of the ground plates projecting rearwardly of the profiles.
  • the invention contemplates that the contact portions of the signal terminals be substantially within the longitudinal profiles of the front portions of the ground plates longitudinally of the housing.
  • the tail portions of the signal terminals are substantially within the longitudinal profiles of the body portions of the ground plates longitudinally of the housing.
  • the dielectric housing defines a right-angled configuration of the electrical connector.
  • the contact portions and front portions of the signal terminals and ground terminals, respectively, extend at right angles to the respective tail portions thereof.
  • the signal terminals are mounted in pairs spaced longitudinally of the housing, and the ground plates are disposed on the housing between adjacent pairs of the signal terminals.
  • the tail portions of the signal terminals and ground plates include surface-mounting feet for connection to the circuit traces and ground traces on the printed circuit board.
  • the contact portions of the signal terminals are disposed in two spaced rows longitudinally of the housing for receiving a plug-type connecting device between the rows of contact portions.
  • the front portions of the ground plates are bifurcated to define a pair of spaced arms for receiving at least a portion of the connecting device therebetween.
  • the contact portions of the signal terminals are substantially within the longitudinal profiles of the spaced arms of the ground plates.
  • FIG. 1 is a perspective view looking at the front mating end of an electrical connector embodying the concepts of the invention, the connector being mounted on a circuit board;
  • FIG. 2 is a perspective view looking at the rear terminating end of the connector
  • FIG. 3 is an enlarged perspective view looking at a portion of the terminating end of the connector
  • FIG. 4 is a perspective view of several of the ground plates disposed between pairs of signal terminals, with the connector housing removed to facilitate the illustration;
  • FIG. 5 is a side elevational view of one of the ground plates
  • FIG. 6 is a side elevational view of one of the top signal terminals
  • FIG. 7 is a side elevational view of one of the bottom signal terminals
  • FIG. 8 is a side elevational view of a pair of signal terminals and a ground plate isolated from the connector housing to show the respective longitudinal profiles thereof.
  • a right-angled electrical connector is shown for mounting on a circuit board 12.
  • the connector includes an elongated insulating or dielectric housing, generally designated 14, which is substantially surrounded by a metal shield, generally designated 16, and a mounting component, generally designated 18.
  • the housing defines a front mating end 20 (Fig. 1) of the connector and a rear terminating end 22 (Fig. 2) of the connector.
  • Mounting component 18 of connector 10 includes a pair of apertured mounting bosses 24 for receiving appropriate fasteners (not shown) for mounting the connector on circuit board 12.
  • Housing 14 includes a pair of posts 26 which are positioned in and project upwardly through a pair of positioning holes 28 in mounting component 18.
  • the mounting component includes a pair of forwardly projecting latch arms 30 (Fig. 1) for latching connector 10 to an appropriate latch means of a complementary mating connector or other connecting device.
  • Metal shield 16 of connector 10 maybe stamped and formed of sheet metal material.
  • the shield includes a plate portion 32 for abutting against the front face of the mid section of housing 14, as well as a shroud portion 34 (Fig. 1) which surrounds mating end 20 of the housing.
  • the shield has a pair of snap latches 36 projecting rearwardly from the top and bottom edges of plate portion 32 for engaging snap-latch bosses 38 on housing 14.
  • the shield has a pair of vertically elongated slots 40 formed in plate portion 32 at opposite ends of shroud portion 40, through which latch arms 30 of mounting component 18 project Referring to FIGS. 3 and 4 in conjunction with FIG.
  • a plurality of signal terminals, generally designated 44 are mounted on housing 14, spaced longitudinally of the housing, between a plurality of ground plates, generally designated 46.
  • one ground plate 46 is disposed between adjacent pairs of signal terminals 44.
  • signal terminals 44 have tail portions 44c for connection, as by soldering, to appropriate signal circuit traces on printed circuit board 12.
  • Ground plates 46 have flexible tail portions 46a for connection, as by soldering, to appropriate ground traces on the printed circuit board.
  • FIG. 5 shows a single ground plate 46 to include a body portion 46b having a rear edge 46c from which flexible tail portion 46a projects rearwardly.
  • the body portions mount the ground plates in the housing.
  • a front portion 46d of each ground plate is bifurcated to define a slot 48, with a pair of flexible contact arms 46e disposed at opposite sides (top and bottom) of the slot.
  • signal terminals 44 include a top terminal 44a and a bottom terminal 44b in each pair of signal terminals disposed between a pair of ground plates 46, as described above.
  • the top and bottom signal terminals 44a and 44b, respectively, are similar in that they include body portions 50 which provide for mounting the terminals in the connector housing.
  • Figure 8 shows the body portion 50 of the top and bottom signal terminals 44a and 44b located in the same plane perpendicular to the printed circuit board.
  • Each signal terminal includes a flexible contact portion or arm 52 projecting forwardly so as to be exposed within front mating end 20 of the connector as seen in FIG. 1, for contacting an appropriate terminal of the complementary connecting device.
  • Each signal terminal includes a tail portion 44c at terminating end 22 of housing 14, including a horizontal 44d and a vertical portion 44e. It can be seen that the tail portions are right-angled for the right-angled connector.
  • One difference between top signal terminals 44a and bottom signal terminals 44b is that the vertical tail portions 44e of the top terminals 44a are longer than the vertical tail portions 44e of the bottom terminals so that all of the tail portions reach printed circuit board 12.
  • Another difference is that the after the right angle bend between the horizontal tail portion 44d and the vertical tail portion 44e of the top signal terminal 44a, there is a second bend 44f which is directed to the right while the second bend 44g at the bottom signal terminal 44b is directed to the left.
  • Tail portions 46a of ground plates 46 have feet 54, and tail portions 44c of signal terminals 44a and 44b have feet 56, with all of the feet of the signal terminals and the ground plates being coplanar when the terminals and plates are mounted in the connector. Therefore, the feet surface engage the circuit traces and ground traces on printed circuit board 12 for solder connection thereto.
  • Ground plates 46 are configured for controlling impedance and reducing cross-talk between the signal terminals in one pair thereof and the signal terminals in an adjacent pair thereof longitudinally of elongated housing 14.
  • top and bottom signal terminals 44a and 44b are substantially within the longitudinal profiles of ground plates 46, except for the flexible tail portion 46a of the ground terminals which engages circuit traces on printed circuit board 12.
  • body portions 50 and tail portions 44c of the signal terminals are substantially within the longitudinal profiles of body portions 46b of ground plates 46.
  • Contact arms 52 of the signal terminals are substantially within the longitudinal profiles of contact arms 46e of ground plates 46.
  • FIG. 8 shows how tail portions 46a of ground plates 46 project rearwardly beyond the rear edges 46c of the ground plates. This enables tail portions 44c of the signal terminals to be completely blocked in their longitudinal profiles by the massive body portions 46b of the ground plates longitudinally of the connector.

Abstract

An electrical connector is provided for mounting on a printed circuit board and includes an elongated dielectric housing having a front mating end and a rear-terminating end. A plurality of signal terminals are mounted on the housing and are spaced longitudinally thereof. Each signal terminal includes a contact person at the mating end of the housing and a tail portion of the terminating end of the housing. A plurality of ground plates are mounted on the housing between at least some of the signal terminals. Each ground plate includes a body portion, a front portion and a tail portion. The signal terminals are disposed substantially within the longitudinally profiles of the body portions and front portions of the ground plates in a direction longitudinally of the housing, with the tail portions of the ground plates projecting rearwardly of the profiles.

Description

Attorney's Reference A2-100PCT
BOARD MOUNTED ELECTRICAL CONNECTOR WITH IMPROVED GROUND TERMINALS
Field of the Invention:
This invention generally relates to the art of electrical connectors and, particularly, to a connector for mounting on a printed circuit board and including ground terminals or plates disposed between a plurality of signal terminals.
Background of the Invention:
A conventional surface mount electrical connector for mounting on a printed circuit board includes an insulative or dielectric housing having a plurality of conductive terminals arranged within the housing in a predetermined spacing, such as in one or more rows. Each of the terminals has a solder tail projecting from the housing to a surface of the printed circuit board. The solder tails are fixed to conductive circuit traces on the circuit board by soldering techniques.
In certain surface mount input/output (I/O) electrical connectors, ground terminals or plates are disposed between at least some of the signal terminals in order to control impedance and to reduce cross-talk between the signal terminals. The ground terminals or plates also have solder tails for connection to appropriate ground circuit traces on the printed circuit board. The ground plates are sized and shaped either to be mirror images of the signal terminals, or the signal terminals are disposed substantially within longitudinal profiles of the ground plates in order to eliminate or at least reduce cross-talk between the terminals. When the ground plates have solder tails for connection to the ground circuit traces on the printed circuit board, either the solder tails lack sufficient flexibility or they do not provide a true mirror image of the signal terminals. The present invention is directed to solving these problems with improved ground terminals or plates in such surface mounted electrical connectors.
Summary of the Invention:
An object, therefore, of the invention is to provide a new and improved electrical connector of the character described for mounting on a printed circuit board. In the exemplary embodiment of the invention, the connector includes an elongated dielectric housing having a front mating end and a rear terminating end. A plurality of signal terminals are mounted on the housing and are spaced longitudinally thereof. Each signal terminal includes a contact portion at the mating end of the housing for contacting an appropriate terminal of a complementary connecting device, and a tail portion at the terminating end of the housing for connection to an appropriate signal circuit trace on the printed circuit board. A plurality of ground plates are mounted on the housing between at least some of the signal terminals. Each ground plate includes a body portion, a front portion projecting forwardly of the body portion at the mating end of the housing, and a tail portion projecting rearwardly of the body portion at the terminating end of the housing for connection to an appropriate ground trace on the printed circuit board. The signal terminals are disposed substantially within the longitudinal profiles of the body portions and front portions of the ground plates in a direction longitudinally of the housing, with the tail portions of the ground plates projecting rearwardly of the profiles. The invention contemplates that the contact portions of the signal terminals be substantially within the longitudinal profiles of the front portions of the ground plates longitudinally of the housing. The tail portions of the signal terminals are substantially within the longitudinal profiles of the body portions of the ground plates longitudinally of the housing. As disclosed herein, the dielectric housing defines a right-angled configuration of the electrical connector. The contact portions and front portions of the signal terminals and ground terminals, respectively, extend at right angles to the respective tail portions thereof. The signal terminals are mounted in pairs spaced longitudinally of the housing, and the ground plates are disposed on the housing between adjacent pairs of the signal terminals. The tail portions of the signal terminals and ground plates include surface-mounting feet for connection to the circuit traces and ground traces on the printed circuit board.
According to one aspect of the invention, the contact portions of the signal terminals are disposed in two spaced rows longitudinally of the housing for receiving a plug-type connecting device between the rows of contact portions. The front portions of the ground plates are bifurcated to define a pair of spaced arms for receiving at least a portion of the connecting device therebetween. The contact portions of the signal terminals are substantially within the longitudinal profiles of the spaced arms of the ground plates.
Other objects, features and advantages of the invention will be apparent from the following detailed description taken in connection with the accompanying drawings.
Brief Description of the Drawings:
The features of this invention which are believed to be novel are set forth with particularity in the appended claims. The invention, together with its objects and the advantages thereof, may be best understood by reference to the following description taken in conjunction with the accompanying drawings, in which like reference numerals identify like elements in the figures and in which:
FIG. 1 is a perspective view looking at the front mating end of an electrical connector embodying the concepts of the invention, the connector being mounted on a circuit board;
FIG. 2 is a perspective view looking at the rear terminating end of the connector;
FIG. 3 is an enlarged perspective view looking at a portion of the terminating end of the connector;
FIG. 4 is a perspective view of several of the ground plates disposed between pairs of signal terminals, with the connector housing removed to facilitate the illustration;
FIG. 5 is a side elevational view of one of the ground plates;
FIG. 6 is a side elevational view of one of the top signal terminals; FIG. 7 is a side elevational view of one of the bottom signal terminals; and
FIG. 8 is a side elevational view of a pair of signal terminals and a ground plate isolated from the connector housing to show the respective longitudinal profiles thereof.
Detailed Description of the Preferred Embodiment: Referring to the drawings in greater detail, and first to FIGS. 1 and 2, a right-angled electrical connector, generally designated 10, is shown for mounting on a circuit board 12. The connector includes an elongated insulating or dielectric housing, generally designated 14, which is substantially surrounded by a metal shield, generally designated 16, and a mounting component, generally designated 18. The housing defines a front mating end 20 (Fig. 1) of the connector and a rear terminating end 22 (Fig. 2) of the connector. Mounting component 18 of connector 10 includes a pair of apertured mounting bosses 24 for receiving appropriate fasteners (not shown) for mounting the connector on circuit board 12. Housing 14 includes a pair of posts 26 which are positioned in and project upwardly through a pair of positioning holes 28 in mounting component 18. The mounting component includes a pair of forwardly projecting latch arms 30 (Fig. 1) for latching connector 10 to an appropriate latch means of a complementary mating connector or other connecting device.
Metal shield 16 of connector 10 maybe stamped and formed of sheet metal material. The shield includes a plate portion 32 for abutting against the front face of the mid section of housing 14, as well as a shroud portion 34 (Fig. 1) which surrounds mating end 20 of the housing. The shield has a pair of snap latches 36 projecting rearwardly from the top and bottom edges of plate portion 32 for engaging snap-latch bosses 38 on housing 14. Lastly, the shield has a pair of vertically elongated slots 40 formed in plate portion 32 at opposite ends of shroud portion 40, through which latch arms 30 of mounting component 18 project Referring to FIGS. 3 and 4 in conjunction with FIG. 2, a plurality of signal terminals, generally designated 44, are mounted on housing 14, spaced longitudinally of the housing, between a plurality of ground plates, generally designated 46. In other words, one ground plate 46 is disposed between adjacent pairs of signal terminals 44. As seen best in FIG. 3, signal terminals 44 have tail portions 44c for connection, as by soldering, to appropriate signal circuit traces on printed circuit board 12. Ground plates 46 have flexible tail portions 46a for connection, as by soldering, to appropriate ground traces on the printed circuit board. It should be understood that the depiction in FIG. 4 is not realistic to the extent that the signal terminals and ground plates, obviously, must be mounted in and supported by the housing. The depiction of FIG. 4 is for purposes of showing the adjacent positioning of the signal terminals and ground plates.
FIG. 5 shows a single ground plate 46 to include a body portion 46b having a rear edge 46c from which flexible tail portion 46a projects rearwardly. The body portions mount the ground plates in the housing. A front portion 46d of each ground plate is bifurcated to define a slot 48, with a pair of flexible contact arms 46e disposed at opposite sides (top and bottom) of the slot.
Referring to FIGS. 6 and 7, signal terminals 44 include a top terminal 44a and a bottom terminal 44b in each pair of signal terminals disposed between a pair of ground plates 46, as described above. The top and bottom signal terminals 44a and 44b, respectively, are similar in that they include body portions 50 which provide for mounting the terminals in the connector housing. Figure 8 shows the body portion 50 of the top and bottom signal terminals 44a and 44b located in the same plane perpendicular to the printed circuit board. Each signal terminal includes a flexible contact portion or arm 52 projecting forwardly so as to be exposed within front mating end 20 of the connector as seen in FIG. 1, for contacting an appropriate terminal of the complementary connecting device. Each signal terminal includes a tail portion 44c at terminating end 22 of housing 14, including a horizontal 44d and a vertical portion 44e. It can be seen that the tail portions are right-angled for the right-angled connector. One difference between top signal terminals 44a and bottom signal terminals 44b is that the vertical tail portions 44e of the top terminals 44a are longer than the vertical tail portions 44e of the bottom terminals so that all of the tail portions reach printed circuit board 12. Another difference is that the after the right angle bend between the horizontal tail portion 44d and the vertical tail portion 44e of the top signal terminal 44a, there is a second bend 44f which is directed to the right while the second bend 44g at the bottom signal terminal 44b is directed to the left. This arrangement of the horizontal and vertical tail portions of the top and bottom terminals allows for further control of capacitance between the signal terminal pairs and, accordingly, further controls cross talk. Tail portions 46a of ground plates 46 have feet 54, and tail portions 44c of signal terminals 44a and 44b have feet 56, with all of the feet of the signal terminals and the ground plates being coplanar when the terminals and plates are mounted in the connector. Therefore, the feet surface engage the circuit traces and ground traces on printed circuit board 12 for solder connection thereto. Ground plates 46 are configured for controlling impedance and reducing cross-talk between the signal terminals in one pair thereof and the signal terminals in an adjacent pair thereof longitudinally of elongated housing 14.
To that end, and referring to FIG. 8 in conjunction with FIG. 4, it can be seen that top and bottom signal terminals 44a and 44b, respectively, are substantially within the longitudinal profiles of ground plates 46, except for the flexible tail portion 46a of the ground terminals which engages circuit traces on printed circuit board 12. Specifically, body portions 50 and tail portions 44c of the signal terminals are substantially within the longitudinal profiles of body portions 46b of ground plates 46. Contact arms 52 of the signal terminals are substantially within the longitudinal profiles of contact arms 46e of ground plates 46. In fact, when a complementary plug-type connecting device is inserted into slots 48 (Fig. 5) of the ground plates and between contact arms 52 of the top and bottom signal terminals, the contact arms of the signal terminals and the contact arms of the ground plates all flex in unison, maintaining the contact arms of the signal terminals within the longitudinal profiles of the contact arms of the ground plates. FIG. 8 shows how tail portions 46a of ground plates 46 project rearwardly beyond the rear edges 46c of the ground plates. This enables tail portions 44c of the signal terminals to be completely blocked in their longitudinal profiles by the massive body portions 46b of the ground plates longitudinally of the connector.
It will be understood that the invention may be embodied in other specific forms without departing from the spirit or central characteristics thereof. The present examples and embodiments, therefore, are to be considered in all respects as illustrative and not restrictive, and the invention is not to be limited to the details given herein.

Claims

CLAIMS:
1. An electrical connector for mounting on a printed circuit board, comprising: an elongated dielectric housing having a front mating end and a rear terminating end; a plurality of signal terminals mounted on the housing and spaced longitudinally thereof, each signal terminal including a contact portion at the mating end of the housing in a body portion for contacting an appropriate terminal of a complementary connecting device and a tail portion at the terminating end of the housing for connection to an appropriate signal circuit trace on the printed circuit board; a plurality of ground plates mounted on the housing between at least some of said signal terminals, each ground plate including a body portion, a front portion projecting forwardly of the body portion at the mating end of the housing and a tail portion projecting rearwardly of the body portion at the terminating end of the housing for connection to an appropriate ground trace on the printed circuit board; and said signal terminals being substantially within the longitudinal profiles of the body portions and front portions of the ground plates in a direction longitudinally of the housing, with the tail portions of the ground plates projecting rearwardly of said profiles.
2. The electrical connector of claim 1, wherein the contact portions of the signal terminals are substantially within the longitudinal profiles of the front portions of the ground plates longitudinally of the housing.
3. The electrical connector of claim 1 , wherein the tail portions of the signal terminals are substantially within the longitudinal profiles of the body portions of the ground plates longitudinally of the housing.
4. The electrical connector of claim 1, wherein said dielectric housing defines a right-angled configuration of the electrical connector, and the contact portions and front portions of the signal terminals and ground plates, respectively, extend at right angles to the respective tail portions thereof.
5. The electrical connector of claim 1, wherein the tail portions of the signal terminals and ground plates include surface-mounting feet for connection to the circuit traces and ground traces on the printed circuit board.
6. The electrical connector of claim 1 , wherein said signal terminals are mounted in pairs spaced longitudinally of the housing, and the ground plates are disposed on the housing between adjacent pairs of the signal terminals.
7. The electrical connector of claim 1 , wherein the signal terminals 44 are mounted in pair including a top and bottom signal terminal, the body portion and the contact portion located in a single plane perpendicular to the printed circuit board.
8. The electrical connector of claim 7, wherein the tail portion includes a horizontal and vertical portion joined by a right angle bend and a lateral bend the lateral bend of the top and bottom signal terminals being opposite one another allowing the tail portions to be located in planes different from said single plane.
9. The electrical connector of claim 1 wherein the contact portions of the signal terminals are disposed in two spaced rows longitudinally of the housing for receiving a plug- type connecting device between the rows of contact portions.
10. The electrical connector of claim 9 wherein the front portions of said ground plates are bifurcated to define a pair of spaced arms for receiving the connecting device therebetween.
11. The electrical connector of claim 9 wherein the contact portions of the signal terminals are substantially within the longitudinal profiles of the spaced arms of the ground plates.
12. An electrical connector for mounting on a printed circuit board, comprising: an elongated dielectric housing having a front mating end and a rear terminating end; a plurality of ground plates mounted on the housing and spaced longitudinally thereof, each ground plate including a body portion, a front portion projecting forwarding of the body portion at the mating end of the housing and a tail portion projecting rearwardly of the body portion at the terminating end of the housing for connection to an appropriate ground trace on the printed circuit board; and a plurality of signal terminals mounted on the housing between at least some of the ground plates, each signal terminal including a contact portion at the mating end of the housing for contacting an appropriate terminal of a complementary connecting device, the contact portions of the signal terminals being substantially within the longitudinal profiles of the front portions of the ground plates longitudinally of the housing, each signal terminal including a tail portion at the terminating end of the housing for connection to an appropriate signal circuit trace on the printed circuit board, the tail portions of the signal terminals being substantially within the longitudinal profiles of the body portions of the ground plates longitudinally of the housing.
13. The electrical connector of claim 12 wherein said dielectric housing defines a right-angled configuration of the electrical connector, and the contact portions and front portions of the signal terminals and ground plates, respectively, extend at right angles to the respective tail portions thereof.
14. The electrical connector of claim 12 wherein the tail portions of the signal terminals and ground plates include surface-mounting feet for connection to the circuit traces and ground traces on the printed circuit board.
15. The electrical connector of claim 12 wherein said signal terminals are mounted in pairs spaced longitudinally of the housing, and the ground plates are disposed on the housing between adjacent pairs of the signal terminals.
16. The electrical connector of claim 12 wherein the contact portions of the signal terminals are disposed in two spaced rows longitudinally of the housing for receiving a plug- type connecting device between the rows of contact portions.
17. The electrical connector of claim 16 wherein the front portions of said ground plates are bifurcated to define a pair of spaced arms for receiving the connecting device therebetween.
18. The electrical connector of claim 17 wherein the contact portions of the signal terminals are substantially within the longitudinal profiles of the spaced arms of the ground plates.
PCT/US2003/021187 2002-07-11 2003-07-07 Board mounted electrical connector with improved ground terminals WO2004008585A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
EP03764367A EP1552585A1 (en) 2002-07-11 2003-07-07 Board mounted electrical connector with improved ground terminals
AU2003261117A AU2003261117A1 (en) 2002-07-11 2003-07-07 Board mounted electrical connector with improved ground terminals
JP2004521545A JP4113535B2 (en) 2002-07-11 2003-07-07 Board-mounted electrical connector with improved ground terminal

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US10/193,037 US6638111B1 (en) 2002-07-11 2002-07-11 Board mounted electrical connector with improved ground terminals
US10/193,037 2002-07-11

Publications (2)

Publication Number Publication Date
WO2004008585A1 true WO2004008585A1 (en) 2004-01-22
WO2004008585A9 WO2004008585A9 (en) 2004-06-03

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PCT/US2003/021187 WO2004008585A1 (en) 2002-07-11 2003-07-07 Board mounted electrical connector with improved ground terminals

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US (1) US6638111B1 (en)
EP (1) EP1552585A1 (en)
JP (1) JP4113535B2 (en)
CN (1) CN1666388A (en)
AU (1) AU2003261117A1 (en)
TW (1) TWI229961B (en)
WO (1) WO2004008585A1 (en)

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SG157271A1 (en) * 2008-05-16 2009-12-29 Molex Inc Electrical connector
DE102008060902A1 (en) 2008-12-09 2010-06-10 Grace Gmbh & Co. Kg Preparing fatty acid alkyl ester from feed stock containing e.g. free fatty acids and fatty acid triglycerides, comprises esterifying feedstock with alkyl alcohol in presence of catalyst and transesterifying the free fatty acid feedstock

Also Published As

Publication number Publication date
TW200403888A (en) 2004-03-01
JP4113535B2 (en) 2008-07-09
US6638111B1 (en) 2003-10-28
TWI229961B (en) 2005-03-21
EP1552585A1 (en) 2005-07-13
JP2005532669A (en) 2005-10-27
WO2004008585A9 (en) 2004-06-03
AU2003261117A1 (en) 2004-02-02
CN1666388A (en) 2005-09-07

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