CN102522643B - There is the electric connector of the grounding contact of prolongation - Google Patents

Abstract

In a kind of electric connector, by changing the size of the lead portion of the contact extended in leadframe housings, it is possible to reduce the adjacent crosstalk between the signal contact in straight line columns and rows.For example, it is possible to increase the height of ground contact lead portions, to be kept apart with electric interfering field by the signal contact in adjacent row further.The height of contact lead portions can be reduced, in order in the case of not increasing total size of adapter, receive bigger ground contact lead portions.Less contact lead portions can reduce the total length difference in differential pair between signal contact, so that the skew of signal minimizes.

Description

There is the electric connector of the grounding contact of prolongation

The application is Application No. 200780023991.3, filing date on May 31st, 2007, sends out The division of the Chinese invention patent application of bright entitled " there is the electric connector of the grounding contact of prolongation " Application.

Background technology

To relevant two of the design of electric connector known to challenge be unfavorable by signal bias and crosstalk Impact minimizes.Crosstalk is to be generated on another signal conductor by a signal conductor in adapter Interference caused.Reduce the commonsense method of crosstalk include being dispersed in grounding contact signal contact it Between.Typically, the size of this grounding contact is essentially identical with signal contact.But, due to them Size, the ability that adjacent signal contact and electric interfering field are kept apart by grounding contact may be subject to To limiting.

Skew is unlike signal to be caused along the propagation of different length conductor.At rigging-angle connector In the case of skew to be minimized be a particularly difficult challenge, wherein rigging-angle connector typically comprises not Electrical contact with length.In such a connector, the end-to-end propagation of differential signal pair each signal Time often changes, thus causes the skew of signal.

Summary of the invention

Disclosed herein and require that a kind of electric connector for minimizing crosstalk and signal bias.Electricity Adapter can include column of electrical contacts, wherein can include the leading part being contained in lead frame assembly The mating end divided and extend from lead frame assembly.Can pass through Difference signal pair, single-ended signal touches Head and/or grounding contact limit this row electrical contact.Such as, lead frame assembly can have with file Direction arrangement electrical contact (being arranged above and below).Lead frame assembly can include with electrical contact at least At least one grounding contact that one Difference signal pair is adjacent.Grounding contact and being used for limits difference letter Number to the first and second signal contacts be preferably rectangular shaped.Contemplate between three or more grades Every lead frame assembly.In three equally spaced lead frame assemblies second is placed on this three Between the other two of individual equally spaced lead frame assembly, three equally spaced lead frame assemblies Second includes the Difference signal pair be injured, and does not has extra shielding between lead frame assembly Time, on the rise time of the differential signal of about 100 psecs, the worst on the Difference signal pair be injured , asynchronous multi-source (multi-active) crosstalk is not over 6%.First signal contact and second poor Sub-signal contact can limit Difference signal pair, Difference signal pair can have from by 85 ± 10 ohm and The impedance selected in the group of 100 ± 10 ohm of compositions.

Due to size and/or the configuration of this electrical contact, can be by the adjacent columns and rows of Difference signal pair Crosstalk between signal contact is limited in desired rank, such as less than 6%.Such as, signal contact With grounding contact can interlock between adjacent row.Thus, the signal pair contact in first row is permissible Adjacent with the grounding contact in the second adjacent column.By changing the contact of extension in lead frame housing The size of lead portion, it is also possible to reduce the crosstalk between the signal contact in adjacent line columns and rows. For example, it is possible to increase the height of ground contact lead portions to be touched by the signal in adjacent column further Head is kept apart with electric interfering field.It addition, in order to connect in the case of not increasing total size of adapter Receive bigger ground contact lead portions, the height of contact lead portions can be reduced.Additionally, Less contact lead portions can reduce the overall length difference between the signal contact in differential pair Not, the skew of signal is therefore made to minimize.

Accompanying drawing explanation

Fig. 1 is the perspective view of exemplary prior art electric connector.

Fig. 2 is the side view of exemplary prior art lead frame assembly.

Fig. 3 is the perspective view of the exemplary embodiment of the electric connector according to the present invention.

Fig. 4 is the side view of the exemplary embodiment of the lead frame assembly according to the present invention.

Fig. 5 is the viewgraph of cross-section of multiple adjacent lead frame assembly.

Fig. 6 A and 6B is the side view of the alternate embodiment of the lead frame assembly according to the present invention.

Fig. 7 describes the exemplary arrangement of contact mating ends.

Detailed description of the invention

Fig. 1 is the perspective view of the electric connector 100 of exemplary prior art.As indicated, electrical connection Device 100 can be rigging-angle connector, and it has the coupling side mated with complementary socket connector, And it is electrically connected to the assembling side of the substrate of such as printed circuit board (PCB).Adapter 100 can be via appointing Suitable surface mount of anticipating or perforation mounting technology, such as solder ball grid array, be press-fitted etc., be assembled to On printed circuit board (PCB).

Adapter 100 can include one or more lead frame assembly 104.Each lead frame assembly 104 can include row's electrical contact 112, and this contact 112 can be signal contact or grounding contact.Touch 112 can be arranged as linear array, the as directed row of example.

Each lead frame assembly 104 can be received in the housing 102 of adapter 100.Lead frame Frame assembly 104 can include protruding 105, and it may latch in the complementary breach limited by housing 102 In 106.Lead frame assembly 104 can be mutually aligned and maintain by housing 102.Such as, shell Body 102 can limit groove or include closing arbitrarily for other receiving lead frame assembly 104 part Suitable configuration.

Furthermore it is possible to holding element 107 to be connected to lead frame assembly 104, and can to help Adapter 100 maintains lead frame assembly 104.Housing 102 and holding element 107 can be by arbitrarily Suitably material is made, such as plastics.

Fig. 2 is the side view of exemplary lead frame assembly 104.Lead frame assembly 104 is permissible Including column of electrical contacts, such as signal contact 108 and/or grounding contact 110.Electrical contact may be used for Difference or the transmission of single-ended signal.Each in contact 108,110 can be included in lead frame group The internal lead portion 114 extended of part 104.Each in contact 108,110 can include for It is connected to the end 106 of the substrate of such as printed circuit board (PCB).

Each in contact 108,110 can include mating end 112 extraly, its for, example As, each contact coupling of the second adapter.As in figure 2 it is shown, the mating end 112 of grounding contact 110 Can prolong than the mating end 112 of signal contact 110 and project farther, in order to when being connected to the second adapter Time, before signal contact mates, it is easy to the coupling of grounding contact.

The mating end 112 of contact 108,110 can limit with the direction of arrow 150 instruction, i.e. with this The direction that row contact 108,110 extends, the width edge length 124 of extension.Signal and grounding contact 108, The respective width edge length 124 of each mating end 112 of 110 can be equal.Alternatively, ground connection is touched The height 124 of the mating end 112 of 110 can be different from the height 124 of signal contact 108.? In one exemplary embodiment, the broadside of the mating end 112 of signal and grounding contact 108,110 is long Degree 124 is about 1.05mm.Can be by respective gap 116 by the neighbor of contact 108,110 End 112 separates.Gap 116 between all mating end 112 can be identical or can be Different.Such as, gap 116 may be about 0.3-0.7mm.

The lead portion 114 of signal contact 108 and grounding contact 110 can limit and refer to arrow 150 The direction shown, the direction i.e. extended with this row contact 108,110, the height 122 of extension.Can be by Gap 120, e.g., about 0.3-0.7mm, separate the adjacent legs in lead frame assembly 104 Part 114.Each gap 120 can be filled by the dielectric substance of such as air or plastics.

The mating end 112 of each and lead portion 114 in contact 108,110 can limit center Line 128.Distance between the centrage 128 of Adjacent mating ends 112 can be distance 126.At one In exemplary embodiment, the distance 126 between adjacent contact is 1.4mm.Adjacent lead portions 114 Centrage 128 between distance can be distance 118.Distance 126 can identical with distance 118 or Person is different.

Additionally, the value of distance 118 between adjacent signal contact 108 can in lead frame assembly 104 To affect the overall length differential of adjacent signal contact 108.Such as, every in lead frame assembly 104 Individual lead portion 114 can limit a part for girth, and it can correspond to each respective leading part Divide the length of 114.Thus, bigger distance 118 can increase the week between Adjacent lead portions 114 Long difference, therefore adds the overall length differential between Adjacent lead portions 114.Therefore, for phase The difference in the end-to-end propagation time of each signal on adjacent signal contact 108 can improve lead frame The signal bias that in assembly 104, adjacent signal contact 108 increases.

Lead frame assembly 104 in adapter 100 can include signal contact 108 and grounding contact The arbitrary arrangement of 110.I.e., from the top to the bottom, this arrangement can be from the differential pair of signal contact 108 Start.Alternatively, from the top to the bottom, this arrangement can be from grounding contact 110 or from single-ended Signal contact 108 starts.

Additionally, with reference to Fig. 1, adjacent lead frame assembly 104 can include signal and grounding contact 108, the varying arrangements of 110.Such as, the grounding contact 110 of the first lead frame assembly 104A can Adjacent with the signal contact 108 with lead frame assembly 104B.This arrangement can reduce signal contact Crosstalk between the adjacent column of 108.

Fig. 3 is the perspective view of the exemplary electric connector 200 according to the present invention.Electric connector 200 Can mate with another electric connector, and also may be electrically connected to the substrate of such as printed circuit board (PCB). Such as surface mounting technology, solder sphere grid array, can be press-fitted etc. by the method for any appropriate, Adapter 200 is assembled to printed circuit board (PCB).As it is shown on figure 3, adapter 200 can be external screw thread Formula or plug connector.In alternative embodiments, adapter 200 can be hollow type or Person's socket type connector.Adapter 200 can be right angle, interlayer or other type of adapter.

Adapter 200 can include one or more lead frame assembly 204.Can be to lead frame group Part 204 carries out insert moulding.Each lead frame can be received in the housing 202 of adapter 200 Assembly 204.Such as, lead frame assembly 204 can include protruding 205, and it latches in by housing 202 In the breach 206 limited.Lead frame assembly 204 can be mutually aligned and keep by housing 202 Live.Such as, housing 202 can limit groove or include for receiving a part of lead frame assembly 204 Other arbitrary suitable configurations.

Furthermore it is possible to holding element 207 to be connected to lead frame assembly 204, and can to help Adapter 200 maintains lead frame assembly 204.Housing 202 and holding element 207 can be by arbitrarily Suitably material is made, such as plastics.Each lead frame assembly 204 can include signal contact 208 With grounding contact 210.Lead frame assembly 204 can limit string signal contact 208 and/or ground connection Contact 210.

Lead frame assembly 204 can include the signal contact 208 by row arrangement and grounding contact 210. Signal contact 208 may be used for difference or single-ended signal transmission.Every in contact 208,210 One can include mating end 212, lead portion 214 and end 206.Mating end can be blade-shaped 's.Signal and grounding contact 208,210 are arranged in each lead frame assembly 204 in any order In.Thus, signal contact 208 and the order of grounding contact 210 in a lead frame assembly 204 Can identical or different with other lead frame assembly 204.Such as, lead frame assembly 204A exists Can include grounding contact 210 at top contact, and adjacent lead frame assembly 204B is pushing up most Signal contact 208 can be included at portion's contact.

Fig. 4 is the side view of exemplary lead frame assembly 204.Lead frame assembly 204 is permissible Including leadframe housings 240 and the lead frame 245 of contact 208,210.In contact 208,210 Each can include mating end 212, extend through leadframe housings 240 from mating end 212 Lead portion 214, and assembling end 260.Mating end 212 may be used for being connected to another adapter Complementary contact, assembling end 260 may be used for being connected to the substrate of such as printed circuit board (PCB).

Lead frame assembly 204 can include signal contact 208 and grounding contact 210.Signal and ground connection The mating end 212 of contact 208,210 can limit width edge length 224.Width edge length 224 can be with Width edge length 124 shown in Fig. 2 is identical.In an exemplary embodiment, signal and ground connection are touched The width edge length 224 of the mating end 212 of 108,110 is about 1.05mm.Alternatively, broadside Length 224 can be less or greater than width edge length 124.Can be by gap 228 by each mating end 212 separate with adjacent mating end 212.Gap 228 can be equal to, more than or less than Fig. 2 The distance in shown gap 116.Such as, gap 228 may be about 0.65mm.Each mating end 212 can limit centrage 231.Distance can be limited between the centrage of adjacent mating end 212 230.Distance 230 can be less than, equal to or more than the distance 126 shown in Fig. 2.An example Property embodiment in, distance between adjacent contact 230 is about 1.4mm.

The lead portion 214 of signal contact 208 can limit the length of side 222.The lead-in wire of signal contact 208 The length of side 222 of part 214 can be less than the width edge length 224 of the mating end 212 of signal contact 208. In an exemplary embodiment, the length of side 222 may be about 0.425mm.Signal contact 208 Lead portion 214 can limit respective centrage 233.Can be in the adjacent legs of signal contact 208 Distance 216 is limited between the centrage 233 of part 214.The lead portion 214 of signal contact 208 Centrage 233 can be on the direction that contact column extends (direction namely indicated by arrow 250) Offset relative to the centrage 230 of the mating end 212 of corresponding signal contact 208.Distance 216 is permissible Greater than, equal to or less than the distance 118 described in Fig. 2.Distance 216 may be about 0.7mm, its In gap between adjacent signal contact be about 0.35mm.

Due to distance 216 (the namely centrage 233 of the Adjacent lead portions 214 of signal contact 208 Between distance) can be less than the distance 118 of Fig. 2, so adjacent signals in lead frame assembly 204 Overall length differential between contact 208 can be less than adjacent signal contact 108 in lead frame assembly 104 Between overall length differential.Such as, in the lead frame assembly of the prior art shown in Fig. 2, phase The length ratio of the lead portion 214 of adjacent signal contact may be about 89-94%.According to the present invention Lead frame assembly in, the length ratio between adjacent signal contact may be about 93-97%.This Individual reduction in length difference can aid in minimizing adapter 200 in adjacent signal contact 208 it Between signal bias.

Can be by gap 226 by the lead portion 214 of grounding contact 210 and signal contact 208 Lead portion 214 separates.Can also be by the lead portion of gap 226 separation signals contact 210 214.Gap 226 can be less than, equal to or more than the gap 120 described in Fig. 2, and can limit Fixed gap 226 is so that the impedance controlled in lead frame assembly 204.Such as, gap 226 can be about For 0.3mm.In row, adjacently distance 217 between contact may be about 1.75mm.

Each lead portion 214 of grounding contact 210 can limit height 220.Highly 220 can be big In the height 122 described in Fig. 2.Additionally height 220 can be more than the mating end 212 of grounding contact 208 Width edge length 224.

In an exemplary embodiment, highly 220 can be more than two phases of signal contact 208 The height 222 of adjacent lead portion 214, including the gap 226 between lead portion 214.Have at top There is the lead frame assembly 204A of signal contact pair can be with the lead frame at top with grounding contact Frame assembly 204B placed adjacent.The lead portion 214 of grounding contact 210 can include height 220, Make them as the shielding of the lead portion 214 of the signal contact 208 for adjacent lead frame. In an exemplary embodiment, highly 220 may be about 2.45mm.

Fig. 5 is three or more adjacent leadframe assemblies 204A placed at equal intervals, the horizontal strokes of 204B Cross sectional view.Each in lead frame assembly 204A, 204B can limit column of electrical contacts 208, 210.Lead frame assembly 204A can be included in the grounding contact 210 at top, lead frame 204B A pair signal contact 208 at top can be included in.Adapter 200 can include any number of drawing Wire frame assembly 204A and 204B.Further, lead frame assembly 204A and 204B can wrap Include signal contact 208 and the grounding contact 210 of any amount and/or configuration, including Difference signal pair.

Each lead portion 214 of signal contact and grounding contact 208,210 can limit width 242, Width 242 (hangs down with the direction indicated with arrow 250 with the direction vertical with the direction that contact column extends Straight direction) extend.Although the width 242 of the contact in the embodiment of Fig. 5 208,210 is uniform , in alternative embodiments, the width of contact 208,210 can change.

The lead portion 214 of signal contact 208 can limit the length of side 222, it can greater than, equal to or Person is less than 242.The lead portion 214 of grounding contact 210 can limit height 220, and it can be more than The length of side 222 of width 242 and signal contact 208.As it can be seen, height 220 can be more than signal The twice of the length of side 222 of contact 208.Between highly 220 can be more than adjacently contact 210 Distance.

As it is shown in figure 5, the signal contact 208 in lead frame assembly 204A, 204B and grounding contact 210 can be interlaced.Such as, the top of lead frame assembly 204A can be with grounding contact 210 Starting, the top of lead frame assembly 204B can start with two signal contacts 208, two signals Contact 208 can form Difference signal pair.In an embodiment, can select signal and grounding contact 208, The size of the lead portion 214 of 210 so that a pair signal contact 208 in lead frame assembly 204A Lead portion can be with the lead portion of the single grounding contact 210 in lead frame assembly 204B 214 is adjacent.Similarly, the lead portion of a pair signal contact 208 in lead frame assembly 204B 214 can the lead portion 214 of grounding contact 210 single with lead frame assembly 204A adjacent. The height 220 of the lead portion 214 of grounding contact 210 so that in the direction of arrow 250 instruction, Each grounding contact 210 and adjacent leadframe assemblies 204A, the signal contact " overlapping " of 204B. So, grounding contact 210 as shielding, and can improve the signal integrity of adapter 200 Property.

Fig. 6 A and 6B is the side view of lead frame assembly 204A, 204B respectively.Such as Fig. 6 A institute Showing, signal contact 208 and grounding contact 210 in lead frame assembly 204A can be according to following suitable Sequence arranges that (representing grounding contact 210 with G, S+ and S-represents the letter of differential pair from the top to the bottom Number contact 208): G, S+, S-, G, S+, S-, G, S+, S-, G, S+, S-, G、S+、S-.Thus, the top of lead frame assembly 204A can start with grounding contact 210. The each grounding contact 210 in lead frame assembly 204A can be separated, letter by signal contact 208 Number contact 208 can form the Difference signal pair of electrical contact.

As shown in Figure 6B, the signal contact 208 in lead frame assembly 204B and grounding contact 210 Can arrange the most from the top to the bottom: S+, S-, G, S+, S-, G, S+, S-、G、S+、S-、G、S+、S-、G.Thus, the top of lead frame assembly 204B Can start with the signal contact 208 of Difference signal pair.Can separate each by grounding contact 210 Difference signal pair.

As shown in figures 2 and 5, lead frame assembly 204 can be received in adapter 200 so that draw Wire frame assembly 204A is adjacent with lead frame assembly 204B.So, such as lead frame assembly 204A The signal contact 208 of Difference signal pair of a lead frame assembly can be with such as lead frame group The grounding contact 210 of second lead frame assembly of part 204B is adjacent.

Fig. 7 illustrates the arrangement of the mating end 212 of the contact 208,210 of adapter 200.I.e., even Connect device 200 and can include lead frame assembly 204A, 204B.Each lead frame assembly 204A can To include and each contact arrangement identical for other lead frame assembly 204A in adapter 200.Often Individual lead frame assembly 204B can include and other lead frame assembly each in adapter 200 The contact arrangement that 204B is identical.Lead frame assembly 204A can include and lead frame assembly 204B Different signals and the order of grounding contact 208,210.Lead frame assembly 204A can be by going between Frame assembly 204B replaces.

Although contact mating ends can be circular or square, mate in the embodiment shown in fig. 5 The cross section of end 212 restriction rectangle.That is, each mating end 212 of contact 210,212 can limit Broadside 251 and edge 252.Contact 208,210 can be arranged so that the first letter of Difference signal pair The edge 252 of number contact 208 with to the edge 252 of secondary signal contact 208 adjacent.Certainly, Alternate embodiment can include the contact for single-ended signal transmission.

The mating end 212 of signal contact 208 and/or grounding contact 210 can limit and refer to arrow 250 The direction shown, i.e. with contact column extend direction, width edge length 224.It addition, contact 208,210 Mating end can be limited to arrow 250 instruction direction on, i.e. with contact column extend direction vertical Direction on, width 240.

First contact column is touched in the center of the mating end 212 of contact 208,210 and adjacent contact row The center of the mating end 212 of 208,210 can limit in extending with the direction of arrow 255 instruction Heart line 232.I.e., it is possible to the row along contact 208,210 limits centrage 232, row therein hangs down Directly extend in row.The adjacent distance between centrage 232 can be distance 230.Distance 230 is permissible It is less than, equal to or more than the distance 126 shown in Fig. 2.

In contact column, the center of the mating end of contact 208,210 can limit with the side of arrow 250 instruction To the centrage 233 extended.The adjacent distance between centrage 233 can be distance 238.Distance 238 can be less than, equal to or more than distance 230.

In the direction (namely along the direction of contact column) of arrow 250 instruction, can be divided by gap Adjacent mating ends 212 in each row.The neighbor in each row can be separated by gap 236 End 212.Gap 228 can be less than, equal to or more than gap 236.

Can adjust ground connection and signal contact 210,208 one or more distances 230,233 and/or Gap 228,236 and/or height 220,222, in order to reach acceptable crosstalk when not shielding Rank, the impedance of coupling and acceptable signal bias.The most in alternative embodiments, this A little values can adjust changeably, in order to such as from 200 to 30 psecs, such as 100 psecs, signal Rise time on, multi-active cross talk the worst, asynchronous on the Difference signal pair be injured be less than 6 %.Additionally, impedance may be about 100 ± 10 ohm.Alternatively, impedance may be about 85 ± 10 Ohm.

Claims (15)

1. an electric connector, including:

Multiple dielectric leadframe assemblies, each dielectric leadframe assembly includes that electrical contact is always Linear array, the linear array of each electrical contact extend along a first direction and include the first grounding contact, Adjacent to the first signal contact of described first grounding contact placement, adjacent to described first signal contact The secondary signal contact placed and the second grounding contact placed adjacent to described secondary signal contact,

Wherein, (i) described first grounding contact and the second grounding contact separate along described first direction First distance, each in (ii) described first grounding contact and the second grounding contact defines Its respective lead portion, it has height along described first direction, more than described first distance Spend, and (iii) does not has additional shielding between these dielectric leadframe assemblies.

2. electric connector as claimed in claim 1, wherein, (i) described first signal contact and the Each in binary signal contact defines its respective lead portion, and it has along described first The length of side in direction, and the described respective length of side approximation of the described lead portion of (ii) described signal contact Equal.

3. electric connector as claimed in claim 1, wherein, described first signal contact and described the Binary signal contact forms the Difference signal pair of electrical contact.

4. electric connector as claimed in claim 1, wherein, the institute of (i) described first grounding contact State lead portion and define the first centrage, the described lead portion limit of (ii) described first signal contact Having determined the second centrage, the described lead portion of (iii) described secondary signal contact defines the 3rd center Line, (iv) described first centrage and described second centrage have separated the first distance, and (v) Described second centrage and described 3rd centrage have separated less than described first centrage and described The second distance of described first distance that two centrages are separated.

5. electric connector as claimed in claim 4, wherein, (i) these electrolyte lead frames described Frame assembly respectively defines its coupling face, in (ii) described first signal contact and secondary signal contact Each defines its respective mating end, and this mating end extends outside described coupling face, (iii) Each in described first grounding contact and the second grounding contact defines its respective mating end, should Mating end extends outside described coupling face, and (iv) and described first signal contact and the second letter The described mating end of number contact is compared, and the described mating end of described second grounding contact extends beyond described Coupling face obtains farther.

6. electric connector as claimed in claim 1, wherein at these dielectric leadframe assemblies First and second signal contact and first and second grounding contact in one dielectric leadframe assembly Order is different from another dielectric leadframe assembly.

7. electric connector as claimed in claim 5, with the described mating end of described first grounding contact The described coupling face extending beyond described leadframe housings is compared, described second grounding contact described Mating end extends beyond farther.

8. electric connector as claimed in claim 5, wherein, each described mating end is blade-shaped.

9. electric connector as claimed in claim 2, wherein, (i) described first signal contact and the The described lead portion of binary signal contact each along the second party substantially vertical with described first direction To defining respective hem width, and (ii) each described hem width is less than the institute of described first grounding contact State the half of the described length of side of lead portion.

10. electric connector as claimed in claim 9, wherein, described first signal contact and second The described hem width of signal contact is approximately equal to described first signal contact and the respective institute of secondary signal contact State the length of side.

11. electric connectors as claimed in claim 4, wherein, described first signal contact and described Each in secondary signal contact is square, described first signal contact and described secondary signal Contact defines Difference signal pair, the length of described first signal contact and described secondary signal contact it Ratio is 95-97%, to reduce differential signal skew.

12. electric connectors as claimed in claim 1, farther include housing and are attached to described shell Three equally spaced dielectric leadframe assemblies on body.

Described three equally spaced electricity wherein, are situated between by 13. electric connectors as claimed in claim 12 In matter lead frame assembly second is placed on described three equally spaced dielectric leadframe assemblies In other two between, described second of described three equally spaced dielectric leadframe assemblies Including the Difference signal pair be injured, and on the rise time of the differential signal of about 100 psecs, Asynchronous multi-active cross talk the worst on the Difference signal pair be injured is not over 6%.

14. electric connectors as claimed in claim 1, wherein, described first signal contact and described Secondary signal contact defines Difference signal pair, and described Difference signal pair has from including 85 ± 10 Ohm and the impedance of selection in the group of 100 ± 10 ohm.

15. electric connectors as claimed in claim 1, farther include housing and are attached to described shell Three dielectric leadframe assemblies on body, wherein by described three dielectric leadframe assemblies Second other two being placed in described three dielectric leadframe assemblies between, described three Described second of individual dielectric leadframe assembly includes the Difference signal pair be injured, and is being about On the rise time of the differential signal of 100 psecs, asynchronous multi-source the worst on the Difference signal pair be injured Crosstalk is not over 6%.