CN101536259B

CN101536259B - Electrical connectors

Info

Publication number: CN101536259B
Application number: CN2007800406013A
Authority: CN
Inventors: S·H·赛尔屈; J·德格斯特; J·E·巴克; S·B·史密斯
Original assignee: FCI SA
Current assignee: FCI SA
Priority date: 2006-10-30
Filing date: 2007-10-26
Publication date: 2011-11-09
Anticipated expiration: 2027-10-26
Also published as: CN102064406B; EP2084785B1; EP2084785A1; CN101536259A; WO2008054683A1; CN102064406A; EP2084785A4

Abstract

An electrical connector having at least four electrical contacts that form two pairs of differential signal contacts. The first and second electrical contacts may be arranged edge- to-edge along a first direction. The third electrical contact may be adjacent to, and arranged broadside-to-broadside with, the first electrical contact along a second direction substantially transverse to the first direction. The first and third electrical contacts may define one of the pairs of differential signal contacts. The fourth electrical contact may be adjacent to, and arranged broadside-to-broadside with, the second electrical contact along the second direction. The second and fourth electrical contacts may define the other pair of differential signal contacts. The two pairs of differential signal contacts may be offset from one another along the second direction.

Description

Electric connector

Background technology

Electric connector can provide signal to connect between the electronic equipment that uses signal contact.Electric connector can comprise lead frame assembly, and lead frame assembly has dielectric lead frame shell and a plurality of from its electrical contact that extends through.Typically, the electrical contact in the lead frame assembly is arranged to linear array, and this linear array is extended along the direction that lead frame assembly stretches.The direction of contact battle array extension along the line becomes narrow limit that narrow limit is arranged.It is right that electrical contact in one or more lead frame assemblies can form differential signal.Differential signal is to being made up of two contacts that carry differential signal.The value of differential signal or amplitude can be poor between the voltage separately on each contact.Form right contact and can be broadside coupled (that is, the broadside that is arranged to a contact faces the broadside with its another paired contact).Form the mechanism of the distortion (skew) between the right contact of differential signal as control (for example, minimize or eliminate), broadside or microstrip coupledly often expect.

When designing printed circuit board (PCB), circuit designers typically is the trace that forms on the right PCB of differential signal and sets up the differential impedance of expectation.Thereby, be desirably in the identical expectation impedance of maintenance between the differential signal contacts in the electric connector usually, and keep constant differential impedance to distribute to installation end along the length of differential signal contacts from their abutting end.Further expectation minimization or eliminate and insert loss (that is, because the reduction of the signal amplitude that the insertion electric connector causes in signal path).Inserting loss can be the function of electric connector operating frequency.That is to say that inserting loss may be bigger when higher operating frequency.

Therefore, have the demand to high-speed electrical connectors, the insertion loss when this high-speed electrical connectors minimizes higher operational frequency keeps the differential impedance of expectation simultaneously between differential signal contacts.

Summary of the invention

Disclosed embodiment comprises a kind of electric connector, and described electric connector comprises: become first electrical contact and second electrical contact of narrow limit to narrow limit layout along contact column; Along the 3rd adjacent electrical contact of capable and described first electrical contact of contact of the described contact column of crosscut, wherein, described first becomes broadside that first pair of differential signal contacts arranged and defined to broadside with the 3rd electrical contact; And along the 4th adjacent electrical contact of capable and described second electrical contact of another contact of the described contact column of crosscut, wherein, described second becomes broadside that second pair of differential signal contacts arranged and defined to broadside with the 4th electrical contact, and wherein, described first and second pairs of differential signal contacts are offset a complete column pitch each other along described contact is capable.

This electric connector can comprise one or more non-air dielectric, such as first non-air dielectric that is arranged between the first and the 3rd electrical contact that forms a pair of differential signal contacts, and be arranged at and form another second non-air dielectric between the second and the 4th electrical contact of differential signal contacts.

This electric connector may further include one or more grounding contacts.For example, this electric connector can comprise first grounding contact, and it is adjacent with first electrical contact and become narrow limit that narrow limit is arranged along this direction with first electrical contact along first direction.This electric connector can also comprise second grounding contact, and it is adjacent with the 3rd electrical contact and become narrow limit that narrow limit is arranged along this direction with the 3rd electrical contact along first direction.

The present invention also provides a kind of electric connector, comprise: first linear array of the electrical contact that extends along first direction, wherein, described first linear array comprises into first electrical contact and second electrical contact that broadside is arranged broadside, and wherein, described first and second electrical contacts form first pair of differential signal contacts; And second linear array of electrical contact adjacent with described first linear array and that extend along described first direction, wherein, described second linear array comprises into the 3rd electrical contact and the 4th electrical contact that broadside is arranged broadside, wherein, described third and fourth electrical contact forms second pair of differential signal contacts, described first and second pairs of differential signal contacts are offset each other along described first direction, and wherein, described second electrical contact is being arranged narrow limit perpendicular to the narrow limit of listing into of described first direction with described the 3rd electrical contact.

Description of drawings

Figure 1A and 1B have described the part of prior art connector system respectively with isometric view and end view;

Fig. 1 C has described the contact arrangement of the prior art connector system shown in Figure 1A and the 1B;

Fig. 2 A and 2B have described a part according to the connector system of embodiment with isometric view and end view respectively;

Fig. 2 C has described the example dielectric substance, and it can be arranged between the lead frame assembly of the pin connector shown in Fig. 2 A and the 2B;

Fig. 2 D has described the example contact arrangement of the pin connector shown in Fig. 2 A and the 2B;

Fig. 3 A and 3B have described a part according to the connector system of another embodiment with isometric view and end view respectively;

Fig. 3 C has described the example contact arrangement of the pin connector shown in Fig. 3 A and the 3B;

Fig. 4 A and 4B have described a part according to the connector system of another embodiment with isometric view and end view respectively;

Fig. 4 C has described the example contact arrangement of the pin connector shown in Fig. 4 A and the 4B;

Fig. 5 A and 5B have described a part according to the connector of another embodiment with isometric view and rearview respectively;

Fig. 5 C has described the example contact arrangement of the connector shown in Fig. 5 A and the 5B;

Fig. 6 is the comparative graph that the difference that connector presented shown in Fig. 5 A-5C is inserted loss and frequency relation;

Fig. 7 is the differential impedance that connector presented shown in Fig. 5 A-5C and the comparative graph of time relationship;

Fig. 8 is the form that has gathered the worst case cross talk of how active (multi-active) that connector presented shown in Fig. 5 A-5C;

Fig. 9 A and 9B have described a part according to the connector of another embodiment with isometric view;

Fig. 9 C has described the example contact arrangement of the connector shown in Fig. 9 A and the 9B;

Figure 10 is the comparative graph that the difference that connector presented shown in Fig. 9 A-9C is inserted loss and frequency relation;

Figure 11 is the differential impedance that connector presented shown in Fig. 9 A-9C and the comparative graph of time relationship;

Figure 12 is the form that has gathered the how active worst case cross talk that connector presented shown in Fig. 9 A-9C;

Figure 13 A and 13B have described a part according to the connector of another embodiment with isometric view;

Figure 13 C has described the rearview of the part of the connector shown in Figure 13 A and the 13B;

Figure 13 D has described the example contact arrangement at the connector shown in Figure 13 A-13C;

Figure 14 is the comparative graph that the difference that connector presented shown in Figure 13 A-13D is inserted loss and frequency relation;

Figure 15 is the differential impedance that connector presented shown in Figure 13 A-13D and the comparative graph of time relationship;

Figure 16 is the form that has gathered the how active worst case cross talk that connector presented shown in Figure 13 A-13D;

Figure 17 has described the example contact arrangement according to the electric connector of another embodiment, and wherein differential signal contacts becomes narrow limit that narrow limit is arranged.

Embodiment

Figure 1A and 1B have described the isometric view and the end view of prior art connector system 100 respectively.Connector system 100 comprises the pin connector 102 that is engaged to socket connector 104.This pin connector 102 can be installed in first substrate, all printed circuit board (PCB)s in this way 106 of first substrate.Socket connector 104 can be installed in second substrate, all printed circuit board (PCB)s in this way 108 of second substrate.Pin connector 102 is shown vertical connector with socket connector 104.That is to say that the cooperation plane of each definition in pin connector 102 and the socket connector 104 is parallel to their mounting planes separately substantially.

Pin connector 102 can comprise connector shell, pedestal 110, lead frame assembly 126 and electrical contact 114.The connector shell of pin connector 102 can comprise interface section 105, and it has defined one or more grooves 107.As following further discussion, the part that groove 107 can ccontaining socket connector 104, and therefore can help to provide mechanical stiffness and support to connector system 100.

In the lead frame assembly 126 of pin connector 102 each can comprise the first lead frame shell 128 and the second lead frame shell 130.The first lead frame shell 128 and the second lead frame shell 130 can be made by dielectric substance, all plastics for example in this way.Lead frame assembly 126 can be inserted mode system lead frame assembly (IMLA) and the linear array that can hold electrical contact 114.For example, as following further discussion, the array of electrical contact 114 can become narrow limit that narrow limit is arranged in each lead frame assembly 126, that is, the narrow limit of adjacent electrical contact 114 can face with each other.

The electrical contact 114 of pin connector 102 can respectively have cross section, its two relative narrow limits of definition and two relative broadsides.Each electrical contact 114 also can be along its length definition at least three parts.For example, shown in Figure 1B, each electrical contact 114 can define abutting end 116, lead portion 118 and terminals 121.Abutting end 116 can be a blade shape, and can be ccontaining by the respective electrical contact 136 of socket connector 104.Terminals 121 can be " submissive ", and therefore can be pressed in the hole 124 that is engaged to pedestal 110.Terminals 121 can be electrically connected with the ball grid array (BGA) 125 on the basal surface 122 of pedestal 110.The lead portion 118 of electrical contact 114 can extend to abutting end 116 from terminals 121.

The pedestal 110 of pin connector 102 can be made by dielectric substance, for example is plastics for example.Pedestal 110 can define the plane with connector face 120 and basal surface 122.The plane of pedestal 110 definition can be parallel to the plane of printed circuit board (PCB) 106 definition substantially.As shown in Figure 1A, the connector face 120 of pedestal 110 can define the hole 124 of the terminals 121 of ccontaining electrical contact 114.The basal surface 122 of pedestal 110 can comprise above-mentioned BGA 125, and it can be electrically connected to printed circuit board (PCB) 106 with electrical contact 114.

Socket connector 104 can comprise connector shell, pedestal 112, lead frame assembly 132 and electrical contact 136.The connector shell of socket connector 104 can comprise interface section 109, and it has defined one or more ridge projections 111.When mated plug connector 102 and socket connector 104, the ridge projections 111 on the connector shell of socket connector 104 can with groove 107 engagements on the connector shell of pin connector 102.So, as above-mentioned, groove 107 and ridge projections 111 provide mechanical rigid and support can for connector system 100.

Each lead frame assembly 132 of this socket connector 104 can comprise lead frame shell 133.Lead frame shell 133 can be made by dielectric substance, all plastics for example in this way.In the lead frame assembly 132 each can be inserted mode system lead frame assembly (IMLA) and the linear array that can hold electrical contact 136.For example, the array of electrical contact 136 can become narrow limit that narrow limit is arranged in lead frame assembly 132, that is, the narrow limit of adjacent electrical contact 136 can face with each other.

Be similar to electrical contact 114, the electrical contact 136 of socket connector 104 can have cross section, and it has defined two relative narrow limits and two relative broadsides.Each electrical contact 136 can be along at least three parts of its length definition.For example, shown in Figure 1B, each electrical contact 136 can define abutting end 141, lead portion 144 and terminals 146.The abutting end 141 of electrical contact 136 can be any socket that is used for ccontaining public contact, the blade shape abutting end 116 of all electrical contacts in this way 114 of public contact.For example, this abutting end 141 can comprise at least two relative teeth 148, and it defines slot betwixt.The slot of abutting end 141 can ccontaining electrical contact 114 blade shape abutting end 116.The width of this slot (that is the distance between this relative tooth 148) can be less than the thickness of blade shape abutting end 116.Thereby relative tooth 148 can apply power on each side of blade shape abutting end 116, and the abutting end 116 with electrical contact 114 remains in the abutting end 141 of electrical contact 136 thus.Alternatively, shown in Figure 1A, abutting end 141 can comprise single tooth 148, and it is configured to the side contacts with blade shape abutting end 116.

The terminals 146 of this electrical contact 136 can be " submissive ", and therefore can be pressed in the hole (not shown) that is engaged to pedestal 112.Terminals 146 can be electrically connected with the ball grid array (BGA) 142 on the basal surface 140 of pedestal 112.The lead portion 144 of each electrical contact 136 can extend to abutting end 141 from terminals 146.

The pedestal 112 of this socket connector 104 can be made by dielectric substance, all plastics for example in this way.Pedestal 112 can define the plane with connector face 138 and basal surface 140.The plane of pedestal 112 definition can be parallel to the plane of printed circuit board (PCB) 108 definition substantially.This connector face 138 can define the hole (not shown) of the terminals 146 that are used for ccontaining electrical contact 136.Although the hole of pedestal 112 is not shown in Figure 1A and 1B, the hole in the connector face 138 of pedestal 112 can be identical or similar with the hole 124 in the connector face 120 of pedestal 110.Basal surface 140 can comprise BGA 142, and it can be electrically connected to printed circuit board (PCB) 108 with electrical contact 136.

Fig. 1 C has described the contact arrangement 190 from the top view of pin connector 102, and electrical contact 114 becomes linear array to arrange therein.Shown in Fig. 1 C, electrical contact 114 can be arranged to 5 * 4 array, yet is appreciated that pin connector 102 can comprise the electrical contact 114 with the arbitrary number of various deployment arrangements.As shown in the figure, this pin connector 102 can comprise contact capable 150,152,154,156,158 and contact column 160,162,164,166.

As above-mentioned, each electrical contact 114 can have the cross section of two relative narrow limits of definition and two relative broadsides.Electrical contact 114 can be listed as into narrow limit along in the row 160,162,164,166 each narrow limit is arranged.In addition, electrical contact 114 can follow in 150,152,154,156,158 each and goes and into broadside broadside is arranged.Shown in Fig. 1 C, the broadside of the electrical contact 114 in the row 150,154,158 can be less than the broadside of the electrical contact 114 in the row 152,156.All sides of each electrical contact 114 can be centered on by dielectric 176, and dielectric 176 can be an air.

Electrical contact 114 in the pin connector 102 can comprise grounding contact G and signal contact S.Shown in Fig. 1 C, the row 150,154,158 of pin connector 102 can all comprise grounding contact G.The row 152,156 of pin connector 102 can comprise grounding contact G and signal contact S.For example, the electrical contact 114 in the row 152,156 can be arranged to the G-S-S-G style.As mentioned above, electrical contact 114 can follow in 150,152,154,156,158 each and go and into broadside broadside is arranged.Therefore, it is right that the adjacent signal contact S in the row 152,156 can form broadside coupled differential signal, and the differential signal shown in all C of Fig. 1 in this way is to 174.

Fig. 2 A and 2B have described isometric view and the end view according to the connector system 200 of embodiment respectively.Connector system 200 can comprise the pin connector 202 that is engaged to socket connector 104.Pin connector 202 can be installed on the printed circuit board (PCB) 106.Socket connector 104 can be installed on the printed circuit board (PCB) 108.Pin connector 202 is shown vertical connector with socket connector 104.Yet, be appreciated that in the embodiment that substitutes in the pin connector 202 and socket connector 104 both or one of any can be rigging-angle connector.

This pin connector 202 can comprise pedestal 110, lead frame assembly 126 and electrical contact 114.Shown in Fig. 2 B, pin connector 202 may further include the non-air dielectric that is placed between the adjacent lead frame assembly 126, all dielectric substances in this way 204 of non-air dielectric.Especially, dielectric substance 204 can be placed between the adjacent leadframe assemblies of holding one or more signal contact S.Dielectric substance 204 can be made by any suitable material, all plastics for example in this way.Dielectric substance 204 can be molded as the part of lead frame assembly 126.Alternatively, can be independent of 126 pairs of dielectric substances of lead frame assembly 204 and carry out moldedly, and subsequently dielectric substance 204 be inserted between the lead frame assemblies 126.

Fig. 2 C has described the end view of dielectric substance 204.Shown in Fig. 2 C, dielectric substance 204 can comprise

head part

205a, 205b, and it extends parallel to each other basically.Dielectric substance may further include interconnecting

parts

206a, 206b, and it extends parallel to each other and be basically perpendicular to

head part

205a, 205b basically.Interconnecting

parts

206a, 206b can be connected to head part 205a head part 205b.

Mention as top accompanying drawing 2A and 2B, dielectric substance 204 can be arranged on (that is the inner leadframe assemblies shown in Fig. 2 A and the 2B 126) between the adjacent leadframe assemblies 126 with signal contact S.More particularly, the head part 205a of dielectric substance 204 can be adjacent to the first lead frame shell 128 and can extend along its length.The head part 205b of dielectric substance 204 can be adjacent to the second lead frame shell 130 and can extend along its length.Thereby

head part

205a, 205b can be arranged to be adjacent at least a portion of each electrical contact 114 in the inner leadframe assemblies 126.The electrical contact 114 that interconnecting parts 206a, the 206b of dielectric substance 204 can be basically parallel in the inner leadframe assemblies 126 extends.Especially, will further discuss as the back, interconnecting

parts

206a, 206b can extend along the length that is contained in each signal contact in the inner leadframe assemblies 126.

Fig. 2 D described from the top view of pin connector 202 to contact arrangement 290, it comprises the linear array of electrical contact 114 and the part of dielectric substance 204.Be similar to the contact arrangement of describing in Fig. 1 C, electrical contact 114 can be arranged to 5 * 4 arrays and can define contact capable 150,152,154,156,158 and contact column 160,162,164,166.Electrical contact 114 in the pin connector 202 can have two broadside cross sections that relative narrow limit is relative with two of definition.Electrical contact 114 can be listed as into narrow limit along in the row 160,162,164,166 each narrow limit is arranged.In addition, electrical contact 114 can follow in 150,152,154,156,158 each and goes and into broadside broadside is arranged.The broadside of the electrical contact 114 in the row 150,154,158 can be less than the broadside of the electrical contact 114 in the row 152,156.

Electrical contact 114 in the pin connector 202 also can comprise grounding contact G and signal contact S.The row 150,154,158 of pin connector 202 can all comprise grounding contact G, and row 152,156 can comprise grounding contact G and signal contact S.For example, the electrical contact 114 in the row 152,156 can be arranged to the G-S-S-G style.Electrical contact 114 can follow in 150,152,154,156,158 each and go and into broadside broadside is arranged.Therefore, the adjacent signal contact S in the row 152,156 can form broadside coupled differential signal to 174.

Shown in Fig. 2 D, interconnecting parts 206a, the 206b of dielectric substance 204 can define the cross section of rectangle substantially, and can be placed between the adjacent signal contact S in the row 162,164.That is to say that interconnecting

parts

206a, 206b can be placed in each broadside coupled differential signal in the pin connector 202 between 174 the signal contact S.In addition, all sides of each electrical contact 114 can be centered on by dielectric 176, and dielectric 176 can be different from and is arranged at broadside coupled differential signal to the dielectric substance 204 between 174.

Fig. 2 D is further shown, interconnecting

parts

206a, 206b can be expert at and extend bigger distance (promptly than each electrical contact 114 on 150,152,154,156,158 the direction, interconnecting

parts

206a, 206b can be wideer than electrical contact 114), yet be appreciated that, in other embodiments, the width of interconnecting

parts

206a, 206b can be equal to or less than the width of electrical contact 114.In addition, interconnecting

parts

206a, 206b can extend essentially identical distance (promptly with each electrical contact 114 on the direction of contact column 160,162,164,166, the height of each interconnecting

parts

206a, 206b can be substantially the same with the height of electrical contact 114 in the contact capable 152,156), yet be appreciated that the height of interconnecting

parts

206a, 206b in other embodiments can be greater than or less than the height of electrical contact 114.

Fig. 3 A and 3B have described isometric view and the end view according to the connector system 300 of another embodiment respectively.Connector system 300 comprises the pin connector 302 that is engaged to socket connector 104.Pin connector 302 can be installed on the printed circuit board (PCB) 106.Socket connector 104 can be installed on the printed circuit board (PCB) 108.Pin connector 302 is shown vertical connector with socket connector 104.Yet, be appreciated that in the embodiment that substitutes in the pin connector 302 and socket connector 104 both or one of any can be rigging-angle connector.

Pin connector 302 can comprise pedestal 110, lead frame assembly 126 and electrical contact 114.As shown in Figure 3A, pin connector 302 may further include common ground plate 178, and it is contained at least one lead frame assembly 126.Common ground plate 178 can be continuous conducting strip, and it extends and be grounded along whole contact column, thereby covers all electrical contacts 114 that are adjacent to common ground plate 178.Common ground plate 178 can comprise plate portion 180, terminals 182 and mating interface 184.

More specifically, the plate portion 180 of common ground plate 178 can be contained in the lead frame assembly 126, and can extend to mating interface 184 from terminals 182.As shown in Figure 3A, common ground plate 178 can comprise the terminals 182 that extend from plate portion 180, and terminals 182 also extend from the second lead frame shell 130 of lead frame assembly 126.Terminals 182 can be " submissive ", and therefore can be pressed in the hole 124 that is engaged to pedestal 110.The terminals 182 of common ground plate 178 can be electrically connected with the BGA 125 on the bottom surface 122 of pedestal 110.

Common ground plate 178 can also comprise the mating interface 184 that extends from plate portion 180, and mating interface 184 also extends on the first lead frame shell 128 of lead frame assembly 126.Mating interface 184 can be a blade shape, and can be ccontaining by the corresponding abutting end 141 of electrical contact 136.

Fig. 3 C has described the contact arrangement 390 from the top view of pin connector 302, and contact arrangement 390 comprises linear array and common ground plate 178a, the 178b of electrical contact 114.Electrical contact 114 can become 5 * 4 arranged in arrays and can define contact capable 150,152,154,156,158 and contact column 160,162,164,166 with common ground plate 178a, 178b.Be similar to the contact arrangement of describing among Fig. 1 C, the electrical contact 114 in the pin connector 302 can have the cross section of two relative narrow limits of definition and two relative broadsides.Electrical contact 114 can be arranged narrow limit along each row 162,164 one-tenth narrow limits.In addition, electrical contact 114 can follow in 150,152,154,156,158 each become broadside that broadside is arranged.The broadside of the electrical contact 114 in the row 150,154,158 can be less than the broadside of the electrical contact 114 in the row 152,156.

Common ground plate

178a, 178b can be arranged as and be respectively adjacent in contact column 162,164.Thereby shown in Fig. 3 C, common ground plate 178a, 178c can replace the grounding contact G in the contact column 160,166 shown in Fig. 1 C.

Electrical contact 114 in the pin connector 302 can comprise ground contact G and signal contact S.The row 150,154,158 of pin connector 302 can all comprise grounding contact G, and row 152,156 can comprise grounding contact G and signal contact S.For example, the electrical contact 114 in

common ground plate

178a, 178b and the row 152,156 can be arranged to the G-S-S-G style.Electrical contact 114 can follow in 150,152,154,156,158 each and go and into broadside broadside is arranged.Therefore, the signal contact S of the vicinity in the row 152,156 can form broadside coupled differential signal to 174.

Each

common ground plate

178a, 178b can have the cross section that is roughly rectangle in shape.Shown in Fig. 3 C, each

common ground plate

178a, 178b can extend the whole length of contact column 160,162,164,166 basically.

Common ground plate

178a, 178b also can extend substantially the same distance (promptly with each electrical contact 114 on the contact line direction, each

common ground plate

178a, 178b can have substantially the same width with electrical contact 114), yet be appreciated that, in other embodiments, the width of

common ground plate

178a, 178b can less than or greater than the width of electrical contact 114.All sides of electrical contact 114 and

common ground plate

178a, 178b can be centered on by dielectric 176.

Fig. 4 A and 4B have described isometric view and the end view according to the connector system 400 of another embodiment respectively.Connector system 400 can comprise the pin connector 402 that is engaged to socket connector 104.Pin connector 402 can be installed on the printed circuit board (PCB) 106.Socket connector 104 can be installed on the printed circuit board (PCB) 108.Pin connector 402 is shown vertical connector with socket connector 104.Yet, in the embodiment that substitutes, in pin connector 402 and the socket connector 104 both or one of any can be rigging-angle connector.Pin connector 402 can comprise pedestal 110, lead frame assembly 126, electrical contact 114,

common ground plate

178a, 178b and dielectric substance 204.

Fig. 4 C has described the contact arrangement 490 from the top view of pin connector 402, and contact arrangement 490 comprises linear array,

common ground plate

178a, 178b and the dielectric substance 204 of electrical contact 114.Shown in Fig. 4 C, interconnecting parts 206a, the 206b of dielectric substance 204 can define the cross section that is roughly rectangle, and can be placed between the signal contact S in the contact column 162,164.That is to say that interconnecting

parts

206a, 206b can be placed in broadside coupled differential signal in the contact column 162,164 between 174.In addition, all sides of each electrical contact 114 and

common ground plate

178a, 178b can be centered on by dielectric 176, and dielectric 176 can be different from and is arranged at broadside coupled differential signal to the dielectric substance 204 between 174.

Shown in further,

common ground plate

178a, 178b can be arranged as and be respectively adjacent in contact column 162,164 as Fig. 4 C.Thereby

common ground plate

178a, 178b can replace the ground contact G in contact column 160,166 shown in Fig. 1 C.Each

common ground plate

178a, 178b can have the cross section that is roughly rectangle in shape.Shown in Fig. 4 C, each

common ground plate

Common ground plate

common ground plate

178a, 178b can have the width identical with electrical contact 114), yet be appreciated that, in other embodiments, the width of

common ground plate

178a, 178b can less than or greater than the width of electrical contact 114.

Have been found that the foregoing description has destroyed the coupled wave that transmits on connector, caused near " sucking-off (the suck out) " of the decibel in 4GHz zone.A target of plastics is the impedances that change a little between signal and ground, to minimize this coupled wave.It is right that ground level is used to minimize the signal of the single pin edge that is coupled to ground connection, and continuous ground plane is provided.

Fig. 5 A and 5B have described isometric view and the rearview according to the connector 500 of embodiment respectively.Connector 500 can be pin connector or socket connector.Connector 500 can not have ground plate and/or crosstalk shields.Connector 500 can be installed on the printed circuit board (PCB) 510, and printed circuit board (PCB) 510 can comprise one or more through holes 512.Connector 500 is shown rigging-angle connector.Yet, be appreciated that in alternate embodiment connector 500 can be vertical connector.

Connector 500 can comprise the connector shell (not shown), one or more lead frame assembly (not shown) and electrical contact 502.Each lead frame assembly can be IMLA and the linear array that can hold electrical contact 502.For example, the electrical contact 502 in each linear array can become narrow limit that narrow limit is arranged, that is, the narrow limit of adjacent electrical contact 502 can face with each other.

Each electrical contact 502 can be along at least three parts of its length definition.For example, each electrical contact 502 can define abutting end 544, lead portion 546 and terminals 548.Shown in Fig. 5 A, each abutting end 544 can be blade shape and be suitable for coming ccontaining by female contact (not shown) of correspondence.Alternatively, each abutting end 544 can comprise one or more teeth, and it is suitable for cooperating with one or more sides of corresponding public contact (not shown).Each terminals 548 can be configured to be attached in any suitable manner printed circuit board (PCB) 510.For example, each terminals 548 can be pressed into cooperation by in one in the through hole 512 of printed circuit board (PCB) 510 definition, maybe can be surface mounted to printed circuit board (PCB) 510 with the fusible element such as soldered ball.Each lead portion 546 can extend to abutting end 544 from terminals 548.As following further discussion, the electrical contact 502 of connector 500 can comprise signal contact S and/or grounding contact G.

Connector 500 may further include the non-air dielectric that is placed between the adjacent leadframe assemblies, all dielectric substances in this way 508.Especially, this dielectric substance 508 can be placed between the adjacent signal contact S, and adjacent signal contact is held by corresponding adjacent leadframe assemblies.Dielectric substance 508 can be made by any suitable material, all plastics for example in this way.Dielectric substance 508 can be molded as the part of lead frame assembly, perhaps can be independent of lead frame assembly and carry out moldedly, and inserts between the lead frame assembly subsequently.

Fig. 5 C has described the contact arrangement 514 from the top view of connector 500, and it comprises the linear array of electrical contact 502.Electrical contact 502 can become 5 * 9 arranged in arrays and can define contact capable 516,518,520,522,524 and contact column 526,528,530,532,534,536,538,540,542, yet any suitable configuration is suitable for embodiment.Every row 526,528,530,532,534,536,538,540,542 can be corresponding to IMLA.Shown in Fig. 5 C, each electrical contact 502 in the connector 500 can have the cross section of two relative narrow limits of definition and two relative broadsides.Shown in further, the broadside of grounding contact G can be greater than the broadside of signal contact S as Fig. 5 C.For example, the length of the broadside of the grounding contact G on the direction of row 526,528,530,532,534,536,538,540,542 length that can be longer than the signal contact S on the equidirectional.In an embodiment, the width edge length of grounding contact G can be than the length of the broadside of signal contact S approximately big twice.

Electrical contact 502 can be listed as into narrow limit along in the row 526,528,530,532,534,536,538,540,542 each narrow limit is arranged.In addition, can follow in 516,518,520,522,524 each goes and into broadside broadside is arranged.Adjacent signal contact S in each row in the row 516,518,520,522,524 can form a pair of differential signal contacts 504.Grounding contact G can be arranged between every pair of differential signal contacts 504 in the row 516,518,520,522,524.In addition, dielectric substance 508 can be arranged between the signal contact S of every pair of differential signal contacts 504.Dielectric substance 508 can be used to increase differential signal contacts to the field intensity in 504, but do not increase to and between coupling, crosstalk and/or noise.In addition, all sides of grounding contact G and signal contact S can be centered on by dielectric 506, and dielectric 506 can be an air.

Return the 5A with reference to figure, dielectric substance 508 can extend (that is, approximately from the abutting end 544 of each signal contact S to terminals 548) along the length of the corresponding signal contact S in every pair of differential signal contacts 504.In addition, corresponding differential signal contacts can have 504 signal contact S and the abutting end 544 of signal contact S and terminals 548 between length measured equal lengths basically.Thereby the every pair of differential signal contacts 504 can present and is approximately zero signal skew.

Each contact column 526,528,530,532,534,536,538,540,542 can define the contact style, i.e. the layout of grounding contact G and signal contact S.For example, the electrical contact 502 in the row 526 can (from the top to the bottom) be arranged to the G-S-S-G-S style.Electrical contact 502 in the row 528 can be arranged to the S-G-S-S-G style, yet is appreciated that when from the bottom during to top view, the contact style in the row 528 can be identical with the contact style in the row 526.Electrical contact 502 in the row 530 can be arranged to the S-S-G-S-S style, and it can be different from the corresponding contact style in the row 526,528.

Can in all the other row, repeat the contact style in the row 526,528,530, that is, row 532 can have the contact style identical with row 526, and row 534 can have the contact style identical with row 528, row 536 can have the contact style identical with row 530, or the like.Thereby, the every pair of differential signal contacts 504 in the row 518 can with nearest differential signal contacts in the row 516 to complete column pitch of 504 phase deviations (following direction).Similarly, the every pair of differential signal contacts 504 in the row 520 can with the nearest differential signal contacts of row 518 to complete column pitch of 504 phase deviations (following direction).Be appreciated that some signal contact S can be neutral contact, or " extra pin ", and to forming differential signal contacts to 504 not necessarily.

Shown in Fig. 5 C, each differential signal contacts in the row 516,518,520,522,524 can form array by dotted line 550 definition to one of signal contact S of 504.For example, line 550 can extend to the about central spot on the same side of another signal contact S in the row 536 from the about central spot on the side of the signal contact S the row 528.Similarly, grounding contact G in the row 516,518,520,522,524 also can form the array by dotted line 552 definition, and line 552 can extend to the about central spot on the same side of another grounding contact G in the row 540 from the about central spot on the side of the grounding contact G the row 532.

Be appreciated that dotted line 550,552 can be respectively any suitable point on the same side of signal contact S and grounding contact G extend.Be appreciated that further each dotted line 550,552 can be with respect to the direction definition oblique angle of row 526,528,530,532,534,536,538,540,542.Can be substantially the same or differ from one another in the oblique angle of line 550,552 definition.Shown in Fig. 5 C, can be arranged between two arrays that form along corresponding line 552 by grounding contact G 504 along the line 550 arrays that form by differential signal contacts.

Between row and the row skew of grounding contact G can be zero, less than column pitch, equal column pitch or greater than column pitch.Similarly, between row and the row differential signal contacts to 504 skew can be zero, less than column pitch, equal column pitch or greater than column pitch.The interval A of row and row center line can be preferably about 2mm to 2.5mm for about 1.4mm.Row and the interval B of row center line can be preferably about 1.8mm to 2.5mm for about 1.3mm.Can be preferably about 5.4mm to 6mm for about 3.9mm with the interval C on ground in each row.Signal can be about 1.2mm to the interval D of signal in each row, but can be in the scope of about 0.3mm to 2mm.The material thickness E of grounding contact G and/or signal contact S can be in the scope of 0.2mm to 0.4mm, and preferred thickness is about 0.35mm.The height F of each grounding contact G is preferably about 2.4mm, but height F can be in the scope from about 1mm to 2.9mm.Interval J in the row between grounding contact G and the adjacent signal contact S can be about 0.4mm, but can be in the scope of 0.2mm to 0.7mm.The definition differential signal contacts to the clearance distance H between 504 the signal contact S be about 0.2mm to 2.5mm, clearance distance is preferably about 1.8mm, and dielectric substance 508 is arranged between the right signal contact S of formation.Yet the signal contact S in row can be preferably and be offset about 0.2mm to 0.3mm on opposite direction from material sotck thinkness or of array centerline spacing bias more.

In an embodiment, row 528 can comprise the first signal contact S and the secondary signal contact S that narrow limit is arranged along 528 one-tenth narrow limits of row.Row 526 can comprise the 3rd signal contact S that is adjacent to the first signal contact S in the row 528.Row 530 can comprise the 4th signal contact S of the secondary signal contact S that is adjacent in the row 528.Shown in Fig. 5 C, on the direction that is basically perpendicular to row 528, first can become broadside that broadside is arranged with the 3rd signal contact, and second can become broadside that broadside is arranged with the 4th signal contact.The first and the 3rd signal contact can define first differential signal contacts to 504, and the second and the 4th signal contact can define second differential signal contacts to 504.Shown in Fig. 5 C was further, first and second differential signal contacts can skew each other on the direction that is basically perpendicular to row 528 to 504.

Fig. 6 is four differential signal contacts in the connector 500 are inserted loss and frequency relation to 504 difference that presented a comparative graph 600.As shown in Figure 6, connector 500 can present approximately-1.5 decibels insertion loss sucking-off in 4 to 6GHz frequency range.

Fig. 7 is that four differential signal contacts in the connector 500 are to the comparative graph 700 of 504 differential impedances that presented and time relationship.As shown in Figure 7, connector 500 can present about 100 ohm of differential impedances of 6% of adding deduct.

Fig. 8 gathers four differential signal contacts in the connector 500 to the form 800 of the 504 how active worst case cross talk that presented.As shown in Figure 8, connector 500 can be presented on the how active worst case cross talk in about scope of 2.6% to 5.5%.Far-end cross talk is presented in two quadrants in top of Fig. 8, and near-end cross is presented in two quadrants in bottom of Fig. 8.Although the rise time is depicted as 50 (10-90%) psec, this measurement can be between 35-1000 (10-90% or 20-80%) psec.These the value substantially can corresponding to about 10,000,000,000 bits per seconds or more as many as less than 622 megabits of per seconds.

Fig. 9 A and 9B have described the isometric view according to the connector 900 of another embodiment.Fig. 9 C has described the contact arrangement 902 from the top view of connector 900, and contact arrangement 902 comprises the linear array of electrical contact 502.Be similar to connector 500, connector 900 can not have ground plate and/or crosstalk shields.Connector 900 can be the rigging-angle connector that is installed on the printed circuit board (PCB) 510, yet is appreciated that in alternate embodiment, and connector 900 can be vertical connector.

This connector 900 can comprise feature and/or the element identical with connector 500 usually, such as the lead frame assembly (not shown) of one or more linear arrays that are used to hold electrical contact 502 be arranged at dielectric substance 508 between the adjacent signal contact S.Shown in Fig. 9 A and 9B, dielectric substance 508 can extend the length of the corresponding signal contact S in 504 along each differential signal contacts, and in addition, connector 900 can have the identical or similar contact and the contact size of space with connector 500.

Shown in Fig. 9 C, connector 900 can be without any grounding contact G with the different connectors 900 that can be of connector 500.More specifically, contact arrangement 902 can comprise that one or more each along in the row 526,528,530,532,534,536,538,540,542 are listed as into the signal contact S that narrow limit is arranged narrow limit.In addition, this signal contact S can follow in 516,518,520,522,524 each and goes and into broadside broadside is arranged.Adjacent signal contact S in each row in the row 516,518,520,522,524 can form differential signal contacts to 504.Different with connector 500, grounding contact G can not be arranged at each differential signal contacts in the row 516,518,520,522,524 of connector 900 between 504.

Figure 10 is four differential signal contacts in the connector 900 are inserted loss and frequency relation to 504 difference that presented a comparative graph 1000.As shown in figure 10, connector 900 can present approximately in 4 to 6GHz frequency ranges-the insertion loss sucking-off of 0.5dB.

Figure 11 is that four differential signal contacts in the connector 900 are to the comparative graph 1100 of 504 differential impedances that presented and time relationship.As shown in figure 11, all differential signal contacts except that can be about 100 ohm to 504 differential impedance and add deduct 10%.Be appreciated that, can adjust differential impedance (promptly, be matched to system impedance), above-mentioned adjustment can by will form differential signal contacts move more closely to 504 signal contact S or further from, by increasing or reduce the width of signal contact S and/or realizing by the dielectric constant that increases or reduce in the gap between signal contact S.

Figure 12 has gathered four differential signal contacts in the connector 900 to the form 1200 of the 504 how active worst case cross talk that presented.As shown in figure 12, connector 900 can present the how active worst case cross talk that is positioned at about 2.7% to 4.1% scope.Far-end cross talk is presented in two quadrants in top of Figure 12, and near-end cross is presented in two quadrants in bottom of Figure 12.

Figure 13 A and 13B have described the isometric view according to the connector 1300 of another embodiment.Figure 13 C has described the rearview of connector 1300.Figure 13 D has described from the top view of connector 1300 and has got contact arrangement 1302, and contact arrangement 1302 comprises the linear array of electrical contact 502.Be similar to connector 500, connector 1300 can not have ground plate and/or crosstalk shields.Connector 1300 can be the rigging-angle connector that is installed on the printed circuit board (PCB) 510, yet is appreciated that in alternate embodiment, and this connector 1300 can be vertical connector.

Connector 1300 can comprise feature and/or the element identical with connector 500 usually, all one or more in this way lead frame assembly (not shown) that are used to hold the linear array of electrical contact 502.Each linear array can comprise grounding contact G and signal contact S.In addition, connector 1300 can have and the connector 500 identical or similar contact and the contact sizes of space, and identical or similar contact arrangement.

Shown in Figure 13 D, connector 1300 and connector 500 different can be that this connector 1300 can not comprise being arranged at and form differential signal contacts to the dielectric substance between 504 the adjacent signal contact S 508.In addition, the row with the row center line interval K can be about 1.4mm to 3mm, be preferably 1.65mm to 2mm.Row and the interval L of row center line be about 1.3mm to 2.5mm, be preferably 1.4mm to 1.5mm.

Figure 14 is four differential signal contacts in the connector 1300 are inserted loss and frequency relation to 504 difference that presented a comparative graph 1400.As shown in figure 14, connector 1300 can present the insertion loss less than-0.5dB in the frequency up to 20GHz, and presents in 0 to 20GHz frequency range and to be approximately zero sucking-off.In addition, this insertion loss value shows minimal phasing down in 0 to 20GHz frequency range.Therefore, one or more differential signal contacts can remain on up to 40GHz at least-2dB or still less 504 insertion loss.

Figure 15 is that four differential signal contacts in the connector 1300 are to the comparative graph 1500 of 504 differential impedances that presented and time relationship.As shown in figure 15, all differential signal contacts except that can be about 100 ohm to 504 differential impedance and add deduct 10%.As mentioned above, can adjust differential impedance (promptly, be matched to system impedance), above-mentioned adjustment can by will form differential signal contacts move more closely to 504 signal contact S or further from, by increasing or reduce the width of signal contact S and/or realizing by the dielectric constant that increases or reduce in the gap between signal contact S.

Figure 16 has gathered four differential signal contacts in the connector 1300 to the table 1600 of the 504 how active worst case cross talk that presented.As shown in figure 16, connector 1300 can present the how active worst case cross talk that is positioned at about 0.3% to 2.1% scope.Far-end cross talk is presented in two quadrants in top of Figure 16, and near-end cross is presented in two quadrants in bottom of Figure 16.

In one or more the foregoing descriptions, at least a portion electrical contact can be inserted into and be molded in the plastics.In addition, this electric connector can be configured to be used for the insertion that is press-fitted of flat rock (flat rock) PCB.For example, one or more linear arrays of electrical contact can layering.The linear array of each lamination can be grouped together then to form the set of entity or independent wafer.Alternatively, can make the box with four, five or six limits comes around electrical contact.The inside of box can be filled with air, plastics, PCB material or their combination in any.Can electric connector be installed on the printed circuit board (PCB) via soldered ball, fusible element, solder fillet etc.

Figure 17 has described from the contact arrangement 1700 according to the top view of the electric connector of another embodiment, and wherein differential signal contacts becomes narrow limit that narrow limit is arranged.This contact arrangement 1700 can comprise the linear array of electrical contact 1732, and it can comprise grounding contact G and signal contact S.As shown in figure 17, electrical contact 1732 can be arranged to 6 * 9 array and can define contact capable 1702,1704,1706,1708,1710,1712 and

contact column

1714,1716,1718,1720,1722,1724,1726,1728,1730, yet any suitable configuration can be suitable for embodiment.Every

row

1714,1716,1718,1720,1722,1724,1726,1728,1730 can be corresponding to IMLA.As shown in figure 17, each electrical contact 1732 in the connector can have cross section, and it has defined two relative narrow limits and two relative broadsides.Shown in Figure 17 was further, the broadside of grounding contact G can be greater than the broadside of signal contact S.For example, in an embodiment, the broadside of ground contact G can be than the broadside of signal contact S larger about twice.

Electrical contact 1732 can be listed as into narrow limit along in the

row

1714,1716,1718,1720,1722,1724,1726,1728,1730 each narrow limit is arranged.In addition, at least a portion electrical contact 1732 can follow in 1702,1704,1706,1708,1710,1712 each and goes and into broadside broadside is arranged.Adjacent signal contact S in each row in the

row

1714,1716,1718,1720,1722,1724,1726,1728,1730 can form differential signal contacts to 1734.Grounding contact G can be arranged at each differential signal contacts in the

row

1714,1716,1718,1720,1722,1724,1726,1728,1730 between 1734.All sides of grounding contact G and signal contact S can be centered on by dielectric 506.

Each row in the

contact column

1714,1716,1718,1720,1722,1724,1726,1728,1730 can define the contact style.For example, the electrical contact 1732 in the row 1714 can arrange that (moving to the bottom from the top) becomes the G-S-S-G-S-S style.Electrical contact 1732 in the row 1716 can be arranged to the S-S-G-S-S-G style, yet is appreciated that when from the bottom during to top view, the contact style in the row 1716 can be identical with the contact style in the row 1714.Electrical contact 1732 in the row 1718 can be arranged to the S-G-S-S-G-S style, and it can be different from the corresponding contact style in the

row

1714,1716.

Can in all the other row, repeat the contact style in the

row

1714,1716,1718, that is, row 1720 can have identical contact style with row 1714, and row 1722 can have identical contact style with row 1716, row 1724 can have identical contact style with row 1718, or the like.Be appreciated that some signal contact S can be neutral contact or " extra pin ", and for forming differential signal contacts to 1734 not necessarily.

As shown in figure 17, the grounding contact G in the

row

1702,1704,1706,1708,1710,1712 can form the one or more arrays by dotted line 1736 definition.For example, one of line 1736 can extend to the about central spot on the same side of another grounding contact G in the row 1726 from the about central spot on the side of the grounding contact G the row 1716.Be appreciated that dotted line 1736 can extend from any suitable point on the same side of grounding contact G.Each dotted line 1736 can be with respect to the direction definition oblique angle of

row

1714,1716,1718,1720,1722,1724,1726,1728,1730.Can be basic identical or differ from one another in the oblique angle of each line 1736 definition.

Claims

1. electric connector comprises:

Become first electrical contact and second electrical contact of narrow limit along contact column to narrow limit layout;

Along the 3rd adjacent electrical contact of capable and described first electrical contact of contact of the described contact column of crosscut, wherein, described first becomes broadside that first pair of differential signal contacts arranged and defined to broadside with the 3rd electrical contact; And

Along the 4th adjacent electrical contact of capable and described second electrical contact of another contact of the described contact column of crosscut,

Wherein, described second becomes broadside that second pair of differential signal contacts arranged and defined to broadside with the 4th electrical contact, and

Wherein, described first and second pairs of differential signal contacts are offset a complete column pitch each other along described contact is capable.

2. electric connector as claimed in claim 1 further comprises:

Be arranged at first non-air dielectric between the described first and the 3rd electrical contact of described first pair of differential signal contacts and be arranged at second non-air dielectric between the described second and the 4th electrical contact of described second pair of differential signal contacts.

3. electric connector as claimed in claim 2 wherein, comprises one of at least plastic material in described first or second non-air dielectric.

4. electric connector as claimed in claim 2, wherein, the described first and the 3rd electrical contact is contained in respectively in first lead frame assembly and second lead frame assembly, and

Wherein, it is molded that described first non-air dielectric is independent of described first and second lead frame assemblies.

5. electric connector as claimed in claim 1 further comprises:

First grounding contact adjacent with described first electrical contact, wherein, described first grounding contact becomes narrow limit that narrow limit is arranged with described first electrical contact along described contact column;

Second grounding contact adjacent with described the 3rd electrical contact, and described second grounding contact and described the 3rd electrical contact become narrow limit that narrow limit is arranged along the direction of described contact column.

6. electric connector as claimed in claim 5, wherein, the broadside one of at least in described first and second grounding contacts is along longer than the broadside one of at least in the described first and the 3rd electrical contact on the direction of described contact column.

7. electric connector as claimed in claim 1, wherein, described second electrical contact of described first electrical contact of described first pair of differential signal contacts and described second pair of differential signal contacts forms at least a portion with respect to the contact array at described contact column definition oblique angle.

8. electric connector as claimed in claim 1, wherein, described electric connector does not have screen.

9. electric connector as claimed in claim 1, wherein, described first electrical contact comprises first abutting end and first terminals, and defines first lengths of contacts betwixt;

Wherein, described the 3rd electrical contact comprises second abutting end and second terminals, and defines second lengths of contacts betwixt; And

Wherein, described first and second lengths of contacts are equal substantially.

10. electric connector as claimed in claim 1, in wherein said first and second pairs of differential signal contacts one of at least in the insertion loss that has up to the 20GHz frequency less than-0.5dB.

11. electric connector as claimed in claim 1, wherein, having in 0 to 20GHz scope one of at least in described first and second pairs of differential signal contacts is approximately zero sucking-off.

12. an electric connector comprises:

First linear array of the electrical contact that extends along first direction, wherein, described first linear array comprises into first electrical contact and second electrical contact that broadside is arranged broadside, and wherein, described first and second electrical contacts form first pair of differential signal contacts; And

Second linear array of and electrical contact that along described first direction extend adjacent with described first linear array, wherein, described second linear array comprises into the 3rd electrical contact and the 4th electrical contact that broadside is arranged broadside,

Wherein, described third and fourth electrical contact forms second pair of differential signal contacts,

Described first and second pairs of differential signal contacts are offset each other along described first direction, and

Wherein, described second electrical contact is being arranged narrow limit perpendicular to the narrow limit of listing into of described first direction with described the 3rd electrical contact.

13. electric connector as claimed in claim 12 further comprises:

Be arranged at first non-air dielectric between described first and second electrical contacts; And

Be arranged at second non-air dielectric between described third and fourth electrical contact.

14. electric connector as claimed in claim 13, wherein, described first and second electrical contacts are contained in respectively in first lead frame assembly and second lead frame assembly, and

Wherein, described first non-air dielectric forms as the part one of at least in described first or second lead frame assembly.

15. electric connector as claimed in claim 12 further comprises grounding contact, described grounding contact is adjacent with described first electrical contact along described row, and adjacent with described the 3rd electrical contact along described first direction.

16. electric connector as claimed in claim 15, wherein, described grounding contact becomes narrow limit that narrow limit is arranged with described first electrical contact, and

Wherein, described grounding contact becomes broadside that broadside is arranged with described the 3rd electrical contact.

17. electric connector as claimed in claim 15, wherein, the broadside of described grounding contact is longer than the broadside one of at least in the described first and the 3rd electrical contact along described row.

18. electric connector as claimed in claim 12 wherein, one of at least is configured to make signal skew to minimize in described first or second pair of differential signal contacts.

19. electric connector as claimed in claim 12, wherein, described electric connector does not have screen.