Electrical connector for a data or communication cable

Abstract

Electrical connector (1) with the following features: - the circuit board (20) has at least one differential line (70), - the differential line (70) has a first conductor track (71) and a second conductor track (72), - the first and second conductor track (72) each have a conductor path (73) and contact surfaces at the ends of the conductor path (73), - an inductor is connected to the first conductor track (71), - a fin (80) is connected to the second conductor track (72).

Description

[0001] The invention relates to an electrical connector according to the features of the preamble of claim 1.

[0002] To improve insertion loss, it is state-of-the-art to match the impedances of a differential line using inductors and / or capacitors. Especially at high frequencies, previous solutions could only meet the normative insertion loss requirements with considerable hardware and development effort.

[0003] To provide the best possible insertion loss, a differential cable with a symmetrical design is required. This minimizes unwanted signal reflections, crosstalk, and signal distortion. Different path lengths, the arrangement of the contact surfaces on the board and relative to each other, and the design and arrangement of the plug contacts and terminal contacts all lead to asymmetries in differential cables.

[0004] The present invention is based on the problem of remedying this situation.

[0005] This problem is solved by an electrical connector having the features of patent claim 1.

[0006] Advantageous embodiments and further developments of the invention are specified in the dependent claims.

[0007] According to the invention, an electrical connector with a circuit board is provided, wherein the circuit board has at least one differential line. The differential line has a first conductor track and a second conductor track. The first and second conductor tracks each have a conduction path and contact surfaces at the ends of the conduction path, wherein an inductor is connected to the first conductor track and a fin is connected to the second conductor track.

[0008] According to a favorable embodiment of the invention, the inductance is designed as a conductor loop.

[0009] The conductor loop is inductive, and the fin is capacitive. The conductor loop is connected to the first conductor track, and the fin is connected to the second conductor track of a differential line. This places opposite loads on the differential line. Since the two conductor tracks of a differential line are oppositely polarized, this means that the conductor loop and fin have the same effect on the differential line. The conductor loop and fin are dimensioned such that the asymmetry of the differential line is almost or, at best, completely compensated.

[0010] In addition to insertion loss, electrical connectors often attempt to reduce crosstalk between conductors and contacts. This is achieved using Next compensation. For this purpose, capacitors are used that are placed between the first and second conductor tracks of a differential line or between two conductor tracks of different differential lines. The capacitors are connected in a floating manner between two conductor tracks and reduce unwanted coupling or interference between conductor tracks. The required size and capacitance of the capacitors must be dimensioned according to requirements.

[0011] Reducing crosstalk using Next compensation often results in a deterioration in the insertion loss of the electrical connector. To optimize insertion loss, Next compensation must always be considered, and vice versa. Since the second conductor track of the differential line must be capacitively applied to achieve good insertion loss, the invention uses only a fin instead of a capacitor, which does not have a counterpart in the form of another conductive surface on another board layer. This single fin can thus be dimensioned almost independently of Next compensation.

[0012] For optimal insertion loss, it is possible to attach more than one fin or more than one conductor loop to a line of the differential line. Furthermore, it is within the scope of the invention to attach one or more fins to a conductor track in addition to one or more conductor loops. This allows for a more precise capacitive or inductive loading of the respective conductor track. To minimize crosstalk, various Next compensation devices can also be arranged on the differential lines in addition to conductor loops and fins.

[0013] Advantageously, a differential line has exactly one single conductor loop connected to the first conductor track and exactly one single fin connected to the second conductor track of the same differential line. The advantage of specifying exactly one conductor loop with an inductive character and one fin with a capacitive character per conductor track for each differential line is that the number of degrees of freedom is significantly reduced. This reduces development effort. In addition, the number of impedances is reduced, which usually results in a reduction in space requirements and costs. Furthermore, it has been shown that the effect of exactly one fin and exactly one conductor loop on the respective conductor track has significant advantages in terms of insertion loss than arrangements in which a conductor loop and a fin act on the same conductor track.

[0014] According to an advantageous development, the conductor loop is formed by a meandering power path of the first conductor track. This meandering conduction path eliminates the need for an additional discrete inductance. Inductances are usually expensive and exhibit relatively large variations. By selectively dimensioning the conduction path, costs and inductance variations can be reduced.

[0015] In another embodiment of the invention, an inductor is connected to the first conductor track, which is not designed as a conductor loop through the conduction path of the first conductor track. Due to the compact design of most electrical connectors, conductor tracks are located close to one another due to topology. A meandering conductor track structure may therefore not always be feasible. The inductor can be designed as a discrete component or as a meandering additional conductor track and connected to the first conductor track.

[0016] In a particularly preferred embodiment of the invention, the conductor loop is designed such that a signal to be transmitted along the first conductor track is delayed. The longer the conductor loop is formed on a conduction path, the longer the delay. The delay of the signal to be transmitted must be taken into account when dimensioning the conductor loop and the fin.

[0017] Ideally, the length of the conductor loop should be at least 10% of the length of the conductor path. To achieve the required inductance value, the meandering conductor loop must have a certain length. The precise dimensioning must be coordinated with the fin. Due to the conductor loop, the conductor path of the cable is significantly longer than the conductor path that does not have a meandering conductor loop.

[0018] According to a particularly preferred embodiment of the invention, the fin is arranged with the second conductor track in the area of ​​the insulation displacement contacts. The fin can be connected either at or near the contact surfaces or to the conduction path of the second conductor track. The contact surfaces are designed as contact pads and are each electrically contacted at the end with the conduction path. The contact surfaces are part of a conductor track. For example, insulation displacement contacts can be soldered to these contact surfaces.

[0019] In a further advantageous embodiment of the invention, the fin is electrically contacted with the second conductor track via a stub line. The stub line is connected to the contact surfaces or the conductor path. Both the length of the stub line and the position at which the stub line is connected to the second conductor track must be taken into account during dimensioning. Often, there is no space near the corresponding conductor track for a larger fin, so the stub line must be of a certain length to even form the fin. It is recommended that the fin be electrically connected to the second conductor track in the area of ​​the second contact element.

[0020] Advantageously, the fin surface area is larger than any contiguous conductive surface of a capacitive coupling acting within or between the first conductive track and the second conductive track of the differential line or lines. In particular, this is intended to prevent unwanted crosstalk between the fin and another conductive surface connected to another conductive track. The larger the conductive surface located near the fin, the greater the capacitive coupling between the fin and the conductive surface, and the greater the potential unwanted crosstalk.

[0021] A further preferred embodiment of the invention provides that the area of ​​the fin is at least 20% larger than any contiguous, conductive area of ​​a capacitive coupling acting within or between the first conductor track and second conductor track of a differential line or lines. Since the fin has no counterpart in the form of a conductive area on another board layer, the fin must be significantly larger than capacitors that, due to their topology, have such a counterpart in order to have the same capacitance as the said capacitor.

[0022] In a particularly preferred embodiment of the invention, no other similarly sized conductive surface is arranged in the region of the fin; in particular, no similarly sized conductive surface arranged on one circuit board layer overlaps the surface of the fin arranged on another circuit board layer. Otherwise, the fin would interact with the conductive surface, for example, a capacitor plate, and potentially inadvertently inject a signal from one conductor track into another.

[0023] According to a further advantageous development, the conductor loop and the fin in a circuit board with four differential lines act on the differential lines 3 and 6 and / or 4 and 5. For these line pairs, the insertion loss is particularly poor due to the topology.

[0024] Advantageously, the electrical connector has a housing that is at least partially made of a conductive material. This significantly improves EMC shielding and increases robustness and reliability. Interference emissions and thus the interference with other electronic devices are also reduced.

[0025] According to an advantageous embodiment of the invention, the electrical connector is designed as a junction box, in particular an RJ45 junction box. Such junction boxes are used, among other things, in the telecommunications sector, particularly for data transmission in the megahertz range.

[0026] According to an advantageous embodiment of the invention, the electrical connector is designed as a plug-in connector, in particular an RJ45 connector. Such connectors are used, among other things, in the telecommunications sector, particularly for data transmission in the megahertz range.

[0027] Here and in the following, and in the aforementioned, curvature refers to the change in direction when traversing a curve. Overlapping refers here and in the following to the fact that a first surface has at least one normal vector arranged such that a second surface is intersected by this normal vector at at least one point.

[0028] An embodiment of the invention is explained below with reference to the figures. They show: Fig. 1 a perspective view of a junction box in exploded view with a housing which has an upper housing part and a lower housing part and a circuit board, Fig. 2 a perspective view of the board Fig. 1, which is equipped with sockets and insulation displacement terminals, the sockets having plug contacts, Fig. 3 a perspective view of the top of the board Fig. 2, Fig. 4 a perspective view of a first differential line, Fig. 5 a perspective view of a second differential line, Fig. 6 a top view of the second differential line from Fig. 5.

[0029] In the following figures, the same reference symbols designate the same parts with the same meaning.

[0030] Fig. 1 shows an electrical connector 1 in the form of a junction box 2. The junction box 2 has a housing 9, which has an upper housing part 10 and a lower housing part 30.

[0031] The housing lower part 30 has an octagonal base plate 31. Guide elements 34 are attached centrally to each side 33 of the octagonal base plate 31 and point toward the housing upper part 10. Cable entry openings 32 are formed on the base plate 31, through which one or more cables can be inserted into the housing 10. The base plate 31 of the housing lower part 30 can also be round or polygonal, in particular square or rectangular. A cable exit guide element 35 is formed on the base plate 31. The cables that are guided through the cable entry openings 32 into the housing are guided by the cable exit guide element 35 at an angle relative to the base plate 31. This angle can be 45 degrees or 90 degrees.The cable exit guide element 35 protects the cables to be inserted from kinking or, when inserted, from unwanted mechanical stress, so that the longevity and reliability can be significantly increased with the cable exit guide element 35.

[0032] The upper housing part 10 is trough-shaped. The upper housing part 10 has a top surface 11 with a housing wall 12 oriented toward the lower housing part 30. The housing wall 12 is symmetrically octagonal. The top surface 11 has recesses 13 in the edge region 17 to accommodate holding means (not shown) by means of which the junction box 2 can be mounted, for example, on a wall. A socket recess 14 is formed in the center of the top surface 11. When assembled, a socket 23 arranged on the circuit board 20 engages in the socket recess 14 and enables a complementary plug (not visible) to establish a connection between the junction box 2 and the plug.

[0033] The housing wall 12 of the upper housing part 10 has eight side surfaces 15, each side surface 15 having a guide recess 16. The guide recesses 16 of the upper housing part 10 are designed such that, when assembled, they accommodate the guide elements 34 of the lower housing part 30. The upper housing part 10 and the lower housing part 30 are designed such that the upper housing part 10 can be secured to the lower housing part 30 in several positions rotated relative to one another about an imaginary housing center axis.

[0034] The upper housing part 10 and the lower housing part 30 of the housing 9 are preferably made of a conductive material, for example, sheet metal. The junction box 2 has electrical shielding due to the conductive material. This significantly improves the electromagnetic compatibility of the junction box 2. Furthermore, the interference emitted by the junction box 2 and the interference caused by the junction box 2 compared to other electronic devices are reduced.

[0035] The surface that encloses the housing wall 12 of the upper housing part 10 has a similar shape to the base plate 31 of the lower housing part 30.

[0036] A circuit board 20 is arranged in the housing 9 of the junction box 2. The circuit board 20 can also be arranged at least partially in the housing 9 of the junction box 2. The circuit board 20 has the shape of an octagon. The circuit board 20 can also have the shape of a polygon, an oval, or a circle. The circuit board 20 has an indentation 24 on at least one side 25 of the circuit board 20. The circuit board 20 can also have indentations 24 on two opposite sides 25. The at least one indentation 24 is designed such that the circuit board 20 can be inserted into the housing base 30 and is mechanically fixed in at least one spatial direction. The circuit board 20 is preferably designed as a four-layer circuit board 20, but can also be designed as a two-layer circuit board 20 or have more than four circuit board layers 27.

[0037] In Fig. 2 is the one from Fig. 1. The circuit board 20 is equipped with two sockets 23 on the side facing the upper housing part 10. Only one or more than two sockets 23 can be arranged on the circuit board 20. The one or more sockets 23 can be inserted into the socket recess 14 of the top surface 11 of the upper housing part 10. First contact elements 40 can be inserted into the socket 23, which, with mating contacts of a mating connector (not shown), can establish an electrical connection between the mating connector and the junction box 2. The junction box 2 preferably has eight first contact elements 40 for each mating connector that is connected.

[0038] The first contact elements 40 can be arranged in one row or in multiple rows. The first contact elements 40 each have at least one foot. This foot can be passed through a first contact opening 41. The foot of a first contact element 40 is mechanically fixed to the circuit board 20 by soldering and electrically contacted with the circuit board 20. The foot can also be electrically and mechanically connected to the circuit board 20 by means of a press fit or a clamp. The first contact elements are preferably designed as plug contacts 45.

[0039] The socket 23 or sockets 23 can also be soldered as SMD components directly onto the side facing the housing top 10 and thus mechanically and electrically connected to the circuit board 20. In addition, the circuit board 20 has mounting holes 26 through which socket legs 18 can be passed. The socket legs 18 have a clip mechanism which ensures that after the socket legs 18 have been pushed through the mounting holes 26, the clip mechanism engages and prevents easier removal of the socket 23 from the circuit board 20 without actively releasing the clip mechanism. Furthermore, the socket 23 can be mechanically fixed to the circuit board 20 using an adhesive or other connecting means.

[0040] Second contact elements 50 are arranged on the circuit board 20. The second contact elements 50 are preferably designed as insulation displacement terminals 55. The insulation displacement terminals 55 have a pin 56. The pin 56 can be inserted into a second contact opening 51 of the circuit board 20. The pin 56 inserted through the second contact opening 51 is soldered to a corresponding second contact pad 52. The soldering electrically and mechanically connects the insulation displacement terminal 55 to the circuit board 20. The pin 56 of an insulation displacement terminal 55 can also be mechanically and electrically connected to the circuit board 20 by means of a compression or clamping connection.

[0041] The insulation displacement terminals 55 point toward the housing base 30. The insulation displacement terminals 55 are arranged in pairs on the circuit board 20. The insulation displacement terminals 55 are arranged in the edge area of ​​the circuit board 20. The insulation displacement terminals 55 can also be arranged in the center of the circuit board 20. The insulation displacement terminals 55 have an insulation displacement surface 57. The insulation displacement surfaces 57 of a pair of insulation displacement terminals 58 can run parallel to one another. The insulation displacement surfaces 57 of a pair of insulation displacement terminals 58 can also be at an angle to one another. In addition, the insulation displacement terminals 55 can be designed such that the insulation displacement surfaces 57 of a pair of insulation displacement terminals 58 are perpendicular to one another.

[0042] The insulation displacement terminals 55 have a recess 59 in the insulation displacement terminal surface 57, forming two bars 60. When assembling the junction box 2, the insulated cable wires (not visible) are inserted into the recess 59 of the insulation displacement terminals 55, whereby the bars of the insulation displacement terminals 55 strip the cable wires and an electrical connection is established between the cable wires and the insulation displacement terminals 55.

[0043] In Fig. 3 is the board from the Fig. 1 and Fig. 2. Contact surfaces are arranged on the side facing the upper housing part 10. A distinction is made between first contact pads 42 and second contact pads 52 in the case of contact surfaces. The first contact pads 42 are preferably arranged in the interior region of the circuit board. The first contact pads 42 are arranged in two groups, with each group being arranged in the region of a socket 23 and being formed in two rows. One and / or more groups of contact pads 42 can be directly assigned to a socket 23. The first contact pads 42 can be arranged on the circuit board 20 in one or more groups.

[0044] Each first contact pad 42 is electrically and mechanically connected to a first contact element 40, preferably a plug-in contact, in the assembled state. The first contact pad 42 is connected to the corresponding second contact pad 52 via a conductive path 73. The second contact pad 52 has a mechanical and electrical connection to a second contact element, preferably a cutting contact. The second contact pads 52 are arranged in pairs in the edge region of the circuit board 20, preferably in the region of the corners. The first contact pad 42, the second contact pad 52, and the conductive path 73 form a conductive path. Two such conductive paths form a differential line 70, with the conductive paths of the differential line being differentiated between a first conductive path 71 and a second conductive path 72 depending on their polarity. Four such differential lines 70 are arranged for each socket 23 to be arranged on the circuit board 20.Since two sockets 23 can be arranged on the circuit board 20, the circuit board 20 has, for example, sixteen first contact pads 42, sixteen second contact pads 52 and eight differential lines 70.

[0045] In Fig. 4 shows a differential line 70, which is mounted on the four-layer board made of Fig. 3. The differential line has a first conductor track 71 and a second conductor track 72. The first conductor track 71 forms a meandering conductor loop 75 in the conductor path 73. The length of the conductor loop 75 corresponds to at least 10% of the path length of the conductor path 73. The conductor loop 75 has an inductive character. In addition, a signal to be transmitted via the first conductor track 71 is delayed in time by the conductor loop. The longer the conductor loop 75 is, the greater the time delay of the signal via the first conductor track 71.

[0046] The meandering conductor loop 75 can form one or more loops, with each loop having the property that the curvature within a loop always has the same sign. With multiple loops, this means that the sign of the curvature changes multiple times within the conductor loop 75. The conductor loop 75 can also be designed such that the conductor loop 75 is formed by interconnected straight lines, with the straight lines forming an angle to one another. Furthermore, the conductor loop 75 can be designed such that the conductor loop 75 has sections with and without curvature.

[0047] The Finne 80 is in the Fig. 4, is arranged in the second circuit board layer 27 and connected to the second conductor track 72 via a stub line 81, wherein the stub line 81 is connected to the conduction path 73. The fin is preferably at least 20% larger than any conductive surface used for Next compensation. The surface 82 of the fin 80 can be shaped like an oval, a circle, a polygon, in particular a rectangle or square, a trapezoid, or a parallelogram. The fin 80 is preferably connected to the transmission path in the region of the insulation displacement terminals 55, wherein the transmission path is the path through which the signal to be transmitted is guided directly through the electrical connector 1.

[0048] The conductive surfaces for next compensation are usually formed as capacitor plates 91. For next compensation, two capacitor plates 91 are arranged overlapping on different circuit board layers 27. A capacitive coupling exists between the capacitor plates 91 of a capacitor. The capacitive coupling can be formed between two conductor tracks of a differential line 70 and / or between two conductor tracks of different differential lines 70.

[0049] The capacitor plates 91 for Next compensation of the differential line in Fig. 4 are connected to the corresponding conductor tracks via stub lines 81 near the contact surfaces. The first conductor track 71 can be divided into two areas. In the first area 96, the first conductor track 71 runs on the topmost board layer 27, wherein the topmost board layer 27 is the board layer 27 that is closest to the ceiling surface 11 of the upper housing part. In the second area 97, the second conductor track 72 runs on the bottommost board layer 27, wherein the bottommost board layer 27 is the board layer 27 that is closest to the base plate 31 of the lower housing part 30. The first area 96 and the second area 97 are electrically connected to one another via a via. A via is a through-plating that enables an electrical connection between different board layers 27. Stub lines 81 can also contain vias. The differential line 70 in Fig. 4 has a total of four capacitor plates 91, each of these capacitor plates 91 establishing a capacitive coupling with another differential line 70.

[0050] In Fig. 5 shows another differential line 70, which is mounted on the four-layer board made of Fig. 3 is formed. The conductor loop 75 has a loop and is connected to the first conductor track 71. The fin 80 has the shape of a hexagon and is connected to the second conductor track 72 via a stub line 81. The stub line 81 is connected to the second conductor track 72 near the second contact pads 52. The stub line 81 can be connected to the first contact pad 42, the second contact pad 52 or the conduction path 73 of the second conductor track 72. Overall, the differential line 70 is connected to five capacitor plates 91, which are arranged for Next compensation, via stub lines 81. These stub lines 81 are preferably connected to the second conductor track 72 near the contact surfaces. The stub lines 81 of the capacitor plates 91 can also be connected to a first contact pad 42, a second contact pad 52 or the conduction path 73 of the second conductor track 72.

[0051] In Fig. 6 is the differential line 70 from Fig.5 in a top view. The area 82 of the fin 80 is significantly larger than any other conductive area connected to the differential line in any way. The conductive path 73, which is arranged between the first contact pad 42 and the second contact pad 52, has four conductive track sections A1-A4. The first conductive track section A1 is directly connected to the second contact pad 52 or to the via 92 of the second contact pad 52, which is directly connected to the second contact pad 52. The first conductive track section A1 has the widest conductive track width of the four conductive track sections A1-A4. The second conductive track section A2 is directly connected to the first conductive track section A1 and can have a smaller conductive track width than the first conductive track section A1. The different conductive track widths make it possible to adapt the impedance in the conductive track sections.This is necessary because different impedances can occur in the transmission path due to topology. For example, the insulation displacement terminals 26 have a different, usually lower, impedance than the plug contacts 45. By matching the line impedances to these topology-dependent impedances, the return loss and insertion loss can be significantly improved.

[0052] The statements regarding conductor track sections one A1 and two A2 apply to both the first conductor track 71 and the second conductor track 72 of the differential line 70. In the first conductor track 71, the conductor loop 75 adjoins the conductor track section A1. This can be wider or thinner. This is followed by the fourth conductor track section A4, which in turn can be wider or thinner than the conductor track width of the conductor loop 75. In the second conductor track 72, a tapered conductor track section A3 is formed adjacent to the conductor track section A2. The taper is present so that the distance between the first contact pad 42 of the first conductor track 71 and the conduction path 73 of the second conductor track 72 is sufficiently large to always meet the standard requirements.The fourth conductor track section A4, which is arranged between the first contact pad 42 and the third conductor track section A3, can be wider or thinner, preferably wider than the third conductor track section A3.

[0053] In addition, the different track widths of the track sections A1-A4 can be used to change the inductances of the tracks in such a way that further degrees of freedom can be utilized to improve the insertion loss. List of reference symbols 1 Electrical connector 2 junction boxes 9 housings 10 Upper housing part 11 Ceiling area 12 Housing wall 13 Recess 14 Socket recess 15 side surfaces 16 Guide recess 17 Marginal area 18 socket legs 20 boards 21 Top 22 Bottom 23 socket 24 indentation 25 page 26 mounting holes 27 PCB layers 30 Housing base 31 Base plate 32 Cable entry opening 33 pages 34 Guide element 35 Cable outlet guide element 40 First contact elements 41 First contact opening 42 First contact pads 45 plug contacts 50 Second contact elements 51 Second contact opening 52 Second contact pad 55 insulation displacement terminals 56 pen 57 insulation displacement surface 58 insulation displacement terminal pairs 59 recess 60 bars 80 Finn 81 spur line 82 area 91 Capacitor plate 92 through-hole plating 95 Via 96 First area 97 Second area A1 First conductor section A2 Second conductor track section A3 Third conductor track section A4 Fourth conductor track section

Claims

[1] Electrical connector (1) with the following features: - the circuit board (20) has at least one differential line (70), - the differential line (70) has a first conductor track (71) and a second conductor track (72), - the first and second conductor tracks (72) each have a conduction path (73) and contact surfaces at the ends of the conduction path (73), - an inductance is connected to the first conductor track (71), - a fin (80) is connected to the second conductor track (72). [2] Electrical connector (1) according to claim 1, characterized by that the inductance is designed as a conductor loop (75). [3] Electrical connector (1) according to one of the preceding claims, characterized bythat a single conductor loop (75) is provided in the first conductor track (71) of the differential line (70) and that a single fin (80) is connected to the second conductor track (72) of the same differential line (70). [4] Electrical connector (1) according to one of the preceding claims, characterized by that the conductor loop (75) is formed by a meandering conductor path (73) of the first conductor track (71). [5] Electrical connector (1) according to one of the preceding claims, characterized by that the conductor loop (75) is designed such that a signal to be transmitted is delayed in time on the first conductor track (71). [6] Electrical connector (1) according to one of the preceding claims, characterized by that the length of the conductor loop (75) corresponds to at least 10% of the length of the conductor path (73). [7] Electrical connector (1) according to one of the preceding claims, characterized bythat the fin (80) is connected to the second conductor track (72) in the area of ​​the cutting contacts. [8] Electrical connector (1) according to one of the preceding claims, characterized by that the fin (80) is electrically contacted with the second conductor track (72) via a stub line (81). [9] Electrical connector (1) according to one of the preceding claims, characterized by that the area (82) of the fin (80) is larger than any contiguous, conductive area of ​​a capacitive coupling acting within or between the first conductor track (71) and second conductor track (72) of a differential line (70) or differential lines (70). [10] Electrical connector (1) according to claim 9, characterized bythat the area (82) of the fin (80) is at least 20% larger than any contiguous conductive area of ​​a capacitive coupling acting within or between the first conductor track (71) and second conductor track (72) of a differential line (70) or differential lines (70). [11] Electrical connector (1) according to one of the preceding claims, characterized by that no further similarly sized conductive surface is arranged in the region of the fin (80), in particular no similarly sized conductive surface arranged on one circuit board layer (27) overlaps the surface of the fin (80) arranged on another circuit board layer (27). [12] Electrical connector (1) according to one of the preceding claims, characterized by that the conductor loop (75) and the fin (80) act on the differential lines (70) 3 and 6 and / or 4 and 5 in a circuit board (20) with four differential lines (70). [13] Electrical connector (1) according to one of the preceding claims, characterized by that the electrical connector (1) has a housing (9) which is at least partially made of a conductive material. [14] Electrical connector (1) characterized by that it is designed as a connection box (2), in particular as an RJ45 connection box. [15] Electrical connector (1) characterized by that it is designed as a connector, in particular as an RJ45 connector

Images