EP2945232A1 - Connecting element, method for attaching a connection element to a circuit board and circuit board - Google Patents

Abstract

The invention relates to a connection element for application to a printed circuit board, which has a number of connection pins and is stabilized by means of at least one stabilizing rod. This prevents deformation in processing steps performed at high temperature. The invention further relates to a method for producing a printed circuit board and a printed circuit board with a connection element.

Description

• eine Anzahl von sich jeweils entlang einer Längsrichtung erstreckenden Anschlussstiften, und
• ein Gehäuse, in welchem die Anschlussstifte enthalten sind.

The invention relates to a connection element for application to a printed circuit board, comprising:

• a number of each extending along a longitudinal direction of pins, and
• a housing in which the pins are included.

Generic connection elements are used, for example, to produce electrical connections to a printed circuit board. For this purpose, the connection element is typically applied to the circuit board and electrically contacted. The connection element can then serve to connect a cable by means of a plug, whereby an electrical contact between the circuit board and other components such as a power supply, other circuit boards or sensors can be made.

Frequently, generic connection elements are designed as surface-mounted device (SMD) - connection elements. In order to make reliable electrical contact with such connection elements, the printed circuit board is typically heated together with the applied connection element in an oven. In this case, electrical contacts are produced by fusion processes materially. However, it has been found that at the temperatures required in this case also materials which are used for the housing or the printed circuit board, in particular plastics, lose their existing at room temperature stiffness. This can, for example, lead to the printed circuit board being bent below the contact element. Also, the contact element may bend, and although in particular in the typical case in which its housing is made of plastic.

As has been found, generic connection elements after the processing step at elevated temperature often have a curved, for example circular arc segment-shaped form. This also affects the embedded in the housing pins, which typically have a parallel orientation in the initial state. Due to the bending of the housing of the connection element, the connection pins can have a fan-shaped orientation.

Due to the aforementioned bending operations, it may be problematic or impossible to use common plugs which are provided for mounting on the connection element and can make electrical contacts to a cable. In particular, the described fan-shaped alignment of the pins no longer fits to such plugs.

In the case of generic connection elements, the described problems can be solved, for example, by carrying out a manual examination of the printed circuit boards with applied connection elements. However, this requires a lot of effort and leads to the fact that numerous printed circuit boards must be sorted out as rejects or manually corrected. In order to prevent the described bending processes, a material for the housing is often used in generic connection elements, which remains dimensionally stable at the temperatures occurring in the processing process. However, such materials, such as high temperature resistant plastics, are very expensive.

The invention further relates to a method for applying a connection element to a printed circuit board and a Printed circuit board on which a connection element is applied. In the case of such methods and printed circuit boards, the same problems occur as have just been described with reference to the generic connection element.

It is therefore an object of the invention to provide a connection element for application to a printed circuit board, which is improved compared to generic connection elements, in particular with regard to its stability at high temperatures and / or in terms of cost. It is a further object of the invention to provide a method for applying such a connection element on a printed circuit board. In addition, it is an object of the invention to provide a printed circuit board on which such a connection element is applied.

This is inventively achieved by a connection element according to claim 1, a method according to claim 13 and a circuit board according to claim 14. Advantageous embodiments can be taken, for example, the respective subclaims. The content of the claims is made by express reference to the content of the description.

• eine Anzahl von sich jeweils entlang einer Längsrichtung erstreckenden Anschlussstiften, und
• ein Gehäuse, in welchem die Anschlussstifte enthalten sind.

The invention relates to a connection element for application to a printed circuit board, comprising:

• a number of each extending along a longitudinal direction of pins, and
• a housing in which the pins are included.

According to the invention, at least one of the connecting pins has a stabilizing rod extending through the housing transversely to the longitudinal direction.

The housing is stabilized by means of the stabilizing bar. Due to the orientation transverse to the longitudinal direction, such a stabilizing rod is typically substantially parallel to a printed circuit board on which the connecting element is applied, since the respective connecting pins are typically perpendicular to the printed circuit board. Thus, the housing is stabilized against a possible bending of the circuit board and a corresponding deformation of the housing by means of the stabilizing rod. The use of particularly temperature-stable materials for the housing can be dispensed with. Also manual control and correction are no longer necessary. Thus, a stabilization of the connection element against deformation is achieved in a simple manner, which significantly reduces the reject. The additional costs are considerably lower than with known connection elements whose housing consists of temperature-stable materials.

It should also be mentioned that advantages are achieved by means of the connecting element according to the invention even after the production process. In particular, the rigidity of a printed circuit board or another component with one or more applied connecting elements according to the invention is permanently increased. This increases the resistance both against functional loading, which can result, for example, from a mounting situation or other applied components, as well as against accidental loads such as vibrations. If connecting elements according to the invention are applied, for example, to a rectangular printed circuit board, in particular a printed circuit board which is fitted on both sides and has only four attachment points in the corners, this printed circuit board will be less prone to bending during its service life. Thus, for example, connections in the center of the circuit board are less stressed, since they only smaller spatial Changes are subject. Compensation structures for spatial changes can be dispensed with, especially in the middle of the printed circuit board. The resistance to vibrations can also be increased by means of the connecting element according to the invention, so that stronger vibration profiles can be maintained.

In addition, it is even possible to deliberately set a resonance frequency of the resulting combination of printed circuit board and connecting element by means of the connecting element according to the invention. For this purpose, for example, one or more connecting elements according to the invention can be applied at specific positions. This also represents, in particular, an aspect of the invention which can be realized independently. This aspect can also be realized with elements other than printed circuit boards, to which connection elements according to the invention can be applied.

The pins are typically used to each produce an electrically conductive connection between a plugged onto the connection element by means of a plug cable and a conductor track on the circuit board. Thus, for example, logical signals can be transmitted, sensors can be read out or supply voltages can be made available. Each pin typically transmits a potential. Typically, the cable used is a multi-core cable, such as a ribbon cable. In this case, typically each pin establishes an electrically conductive connection between a wire of the cable and a track on the board.

The one pin, which has the stabilizing rod, can as well as the others for producing a electrically conductive connection can be used. However, alternatively, the terminal pin having the stabilizing bar may be included in the terminal only for the purpose of stabilization. In this case, no electrically conductive connection is made via this pin.

It should be understood that the longitudinal direction of a terminal pin typically refers to that part of the terminal pin which is provided for producing an electrically conductive connection. For pins that do not have a stabilizer bar, the entire pin can define the lengthwise direction. For pins having a stabilizer bar, the longitudinal direction is typically defined by a remnant of the stabilizer bar when removed.

The integration of the pins together with the stabilizing rod in a separate housing of the circuit board simplifies u. a. the manufacture and handling during assembly of the connection element. Depending on the application, it is also conceivable to use sections or parts of the printed circuit board as a housing and in particular to integrate the stabilization bar directly into the printed circuit board. Furthermore, it is conceivable to assemble the housing from an independent part and a part of the printed circuit board.

According to one embodiment, at least one further connecting pin has a further stabilizing rod extending through the housing transversely to the longitudinal direction. Then there are two stabilizing bars in the connecting element. The longitudinal direction, to which the further stabilizing rod extends transversely, in this case is typically that of the other pin.

It should be understood that any higher number of stabilizing bars may be used. These can each be designed so that a respective pin has the respective stabilizing rod, and they can each extend transversely to the longitudinal direction of this pin. It is also possible that a respective connecting pin has a plurality of stabilizing rods.

The further connecting pin, which has the further stabilizing rod, can also be designed such that it is used to produce an electrically conductive connection. However, it can also be designed so that it is present only for the purpose of stabilization and thus does not produce an electrically conductive connection. The same applies to all possible pins with stabilizing bars.

According to one embodiment, the stabilizing bar and the further stabilizing bar are aligned parallel to one another. Thus, both stabilizing bars can act evenly stabilize the shape of the connection element. In other words, the effect of the two stabilizing bars increases. In addition, a better distribution of the stabilizing effect can be achieved, for example, via a direction transverse to a longitudinal extent of the stabilizing rods. In this way, a particularly good stabilizing effect can be achieved with relatively thin stabilizing rods. This case is particularly advantageous if you want to integrate the stabilization rods in thin circuit boards.

According to one embodiment, the stabilizing bar and the further stabilizing bar have respective free ends, which in have opposite directions to each other. This allows an embodiment in which the two pins on which the stabilizing rods are mounted, are spaced apart, in particular, the gap between these two pins is stabilized together by the stabilizing rods.

According to one embodiment, the stabilizing bar and the further stabilizing bar are arranged at least partially next to one another. Thus, an advantageous gain and equalization of the stabilization effect can also be achieved.

• die Anschlussstifte in einer ersten Gruppe und einer zweiten Gruppe angeordnet, welche voneinander beabstandet sind,
• wobei der Stabilisierungsstab an demjenigen Anschlussstift der ersten Gruppe ausgebildet ist, welcher am nächsten zur zweiten Gruppe angeordnet ist,
• und wobei der weitere Stabilisierungsstab an demjenigen Anschlussstift der zweiten Gruppe ausgebildet ist, welcher am nächsten zur ersten Gruppe angeordnet ist.

According to one embodiment are

• the pins are arranged in a first group and a second group, which are spaced from each other,
• wherein the stabilizing bar is formed on the pin of the first group which is closest to the second group,
• and wherein the further stabilizing bar is formed on the pin of the second group, which is arranged closest to the first group.

Such an embodiment allows the adaptation of the connection element according to the invention to typical designs of known connection elements and has proven to be advantageous with regard to the stabilization effect.

According to one embodiment, the stabilizing bar and / or the further stabilizing bar each extend past a number of connecting pins. Thus, a stabilizing effect of the respective stabilizing bar can also be achieved over a region of the connecting element in which connecting pins are formed.

Preferably, the pins are aligned parallel to each other. This allows a simple plugging a plug on the connection element.

Preferably, the connection element is designed as a surface-mounted device (SMD) - connection element. In such an embodiment, the mentioned advantages come into their own, because SMD connection elements are typically applied to a printed circuit board in a method which includes at least one high-temperature step. At such high temperature steps, the risk of bending is particularly high.

Preferably, the pins are cast in the housing. This allows for easy production and a reliable, play-free mounting of the pins.

Preferably, the respective pins are each integrally formed and more preferably made of metal. This may be, for example, copper, aluminum, another conductive metal or an alloy of such metals. It can be provided in particular that the respective connecting rods, to which a stabilizing rod is attached, are integrally formed. This allows easy manufacture of the respective terminal pin with its stabilizing rod by using a corresponding shape. The further processing steps in the manufacture of the connecting element can be simplified because the stabilizing rods can be set together with their connecting elements to the intended positions, without the need for additional steps or equipment would be necessary.

Preferably, the pins are electrically isolated from each other. This can for example be done by the already mentioned cast-in holder in the housing, which typically made of non-electrically conductive plastic. Thus, each pin can have exactly one potential independent of other potentials and establish a self-contained electrical connection.

• Bereitstellen einer Leiterplatte mit einer Anbringstelle für ein Anschlusselement,
• Bereitstellen eines erfindungsgemäßen Anschlusselements,
• Auflegen des Anschlusselements auf die Anbringstelle der Leiterplatte, und
• Erwärmen der Leiterplatte mit dem Anschlusselement.

The invention further relates to a method for applying a connection element to a printed circuit board, which comprises the following steps:

• Providing a printed circuit board with an attachment point for a connection element,
• Providing a connection element according to the invention,
• Place the connection element on the mounting point of the circuit board, and
• Heating the circuit board with the connection element.

By means of the method according to the invention, an advantage in the process control can be achieved by the use of a connection element according to the invention. In particular, the production of rejects due to bending of the printed circuit board at high temperatures can be avoided without having to resort to particularly expensive materials for the housing of the connection element.

With regard to the connecting element can be used for carrying out the method to all variants and embodiments described above. Illustrated benefits apply accordingly.

The invention further relates to a printed circuit board on which a connecting element according to the invention is applied. Thus, the advantages mentioned above for a printed circuit board can be utilized. In particular, costs can be reduced and rejects minimized.

With regard to the connection element to be used for the printed circuit board according to the invention can be made of all the above-mentioned versions and variants. Illustrated benefits apply accordingly.

Advantageously, the printed circuit board according to the invention was produced by means of a method according to the invention.

• Fig. 1: eine Leiterplatte mit einem Anschlusselement gemäß dem Stand der Technik,
• Fig. 2: ein Anschlusselement gemäß einem Ausführungsbeispiel der Erfindung,
• Fig. 3 bis 5: das Anschlusselement von Fig. 2 in anderen Ansichten,
• Fig. 6: ein Anschlusselement gemäß einem zweiten Ausführungsbeispiel der Erfindung,
• Fig. 7 bis 10: das Anschlusselement von Fig. 6 in anderen Ansichten,
• Fig. 11: eine Leiterplatte gemäß einem Ausführungsbeispiel der Erfindung.

Further features and advantages will be apparent to those skilled in the embodiments described below with reference to the accompanying drawings. Showing:

• Fig. 1 a printed circuit board with a connection element according to the prior art,
• Fig. 2 a connection element according to an embodiment of the invention,
• Fig. 3 to 5 : the connection element of Fig. 2 in other views,
• Fig. 6 a connection element according to a second embodiment of the invention,
• Fig. 7 to 10 : the connection element of Fig. 6 in other views,
• Fig. 11 A circuit board according to an embodiment of the invention.

Fig. 1 shows a printed circuit board 10 which is mounted on a first rail 20 and a second rail 22. The rails 20, 22 are not part of the circuit board 10th

On the circuit board 10, a connection element 100 according to the prior art is applied, which has a housing 105 made of plastic and a number of pins made of metal. These are a first connection pin 111, a second connection pin 112, a third connection pin 113, a fourth pin 114, a fifth pin 115, a sixth pin 116, a seventh pin 121, an eighth pin 122, a ninth pin 123, a tenth pin 124, an eleventh pin 125, and a twelfth pin 126.

To apply the terminal member 100 to the circuit board 10, both were subjected to a processing step at such a high temperature that the materials of the housing 105 and the circuit board 10 could no longer sufficiently maintain their strength to stably secure the shapes of the housing 105 and the circuit board 10 hold. Rather, the circuit board 10, as in Fig. 1 shown, bent in the middle down, with the shape of the housing 105 has adapted accordingly. Since an originally straight shape of the housing 105 has thus merged into a slightly curved, ie arc-segment-shaped form of the housing 105, and the connection pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 are embedded in the housing 105, this also the terminal pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 have been bent so that they are no longer aligned as originally parallel to each other, but each transverse to an imaginary circular arc segment with a large radius. In other words, they are arranged in a fan shape. This can complicate or even prevent the plugging of a plug onto the connection element 100.

Fig. 2 shows a connection element 100 according to a first embodiment of the invention. It is in Fig. 2 a sectional view shown.

The connection element 100 has a housing 105. In this are a first group 110 of pins and a second group 120 formed by pins. The first group 110 of pins has a first pin 111, a second pin 112, a third pin 113, a fourth pin 114, a fifth pin 115, and a sixth pin 116. The second group 120 of pins has a seventh pin 121, an eighth pin 122, a ninth pin 123, a tenth pin 124, an eleventh pin 125 and a twelfth pin 126. The connection pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 are embedded in the housing 105, which is achieved here in that the connection pins 111, 112, 113, 114, 115 , 116, 121, 122, 123, 124, 125, 126 are cast in the housing 105. This allows a completely enclosing and electrically insulating mounting of the connection pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126.

The tenth pin 124 has a stabilizing bar 129. This is formed of the same material with the remaining part of the tenth terminal pin 124. The stabilizing bar 129 extends transversely to a longitudinal direction of the tenth terminal pin 124 and thus extends through the housing 105 and on the first pin 111, the second pin 112, the third pin 113, the seventh pin 121, the eighth pin 122 and the ninth Pin 123 over. The stabilizing rod 129 extends parallel to an in Fig. 2 not shown, on which the connection element 100 is to be applied.

Also, the stabilizing rod 129 is enclosed by the housing 105 on all sides and adjacent. Thus, the stabilizing rod 129 acts stabilizing on the housing 105 and in particular prevents the in Fig. 1 shown bending. On In this way, the housing 105 remains stable even at higher temperatures, in which the own stability of the housing 105 would no longer be sufficient to prevent deflection. The pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 thus maintain their parallel alignment, which avoids the otherwise occurring problems already described.

Fig. 3 shows a plan view of the connection element 100, wherein the drawn line AA indicates the section, which is the basis for the representation of Fig. 1 forms. The terminal pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 are in FIG Fig. 3 to be seen from above.

Fig. 4 shows the connection element 100 in a tilted view. Since this is not a sectional view, the stabilizing bar 129 is not visible. This is located inside the housing 105.

Fig. 5 shows the connection element 100 in yet another illustration. Compared to Fig. 2 the connection element 100 is tilted about a horizontal axis. Since it is also not a sectional view, the stabilizing rod 129 is also in Fig. 5 not to be seen.

Fig. 6 shows a connection element 100 according to a second embodiment of the invention. With respect to the housing 105 and the pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 can thereby largely on Fig. 2 and the associated description. In the following, therefore, the differences will mainly be discussed. at Fig. 6 it is a plan view, with individual elements within the housing 105 are shown in dashed lines.

Unlike the execution of Fig. 2 has the connection element 100 according to the in Fig. 6 illustrated second embodiment, a first stabilizing rod 119 and a second stabilizing rod 129. In this case, the first connection pin 111 has the first stabilization bar 119, and the seventh connection pin 121 has the second stabilization bar 129. The tenth stabilizing bar 124, unlike the first embodiment, has no stabilizing bar.

The stabilizing bars 119, 129 are aligned parallel to each other and at the same height. The first stabilizer bar 119 extends past the seventh pin 121, the eighth pin 122, and the ninth pin 123. The second stabilizer bar 129 extends past the first pin 111, the second pin 112, and the third pin 113 Stabilizing rods 119, 129 also past each other.

By the stabilizing rods 119, 129, the housing 105 is stabilized against bending. By using two stabilizing rods 119, 129, the stabilizing effect is even improved and distributed more evenly.

Fig. 7 shows the connection element 100 of Fig. 6 in another view, which is slightly tilted. The stabilizing bars 119, 129 are in Fig. 7 not to be seen, since they are located within the housing 105.

Fig. 8 shows a sectional view of the connection element 100 of Fig. 6 according to the in Fig. 6 illustrated section line BB. In this case, the connection pins 121, 122, 123, 124, 125, 126 of the second group 120 of connection pins are shown. In particular, it can be seen that the seventh pin 121 is the second stabilizer bar 129, which extends transversely to the longitudinal direction of the seventh connection pin 121 through the housing 105.

Fig. 9 shows a sectional view of the connection element 100 of Fig. 6 according to the in Fig. 6 illustrated section line CC. In this case, the connection pins 111, 112, 113, 114, 115, 116 of the first group 110 of connection pins are shown. In particular, it is shown that the first connection pin 111 has the first stabilizing rod 119. This extends transversely to the longitudinal direction of the first connection pin 111 through the housing 105.

In particular, in the Fig. 8 and 9 It can also be seen that the connection pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 are embedded in the housing 105. This makes possible an advantageous stabilization and force transmission, for example for achieving the stabilizing effect by means of the stabilizing rods 119, 129.

Fig. 10 shows the connection pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126 of the connection element 100 of FIG Fig. 6 without the housing 105. In particular, it can be seen how the two stabilizing bars 119, 129 are arranged relative to the connecting pins 111, 112, 113, 114, 115, 116, 121, 122, 123, 124, 125, 126. It can also be seen that the stabilizing rods 119, 129 are aligned at the same height and parallel to one another. Respective free ends of the stabilizing bars 119, 129 face in opposite directions.

Fig. 11 shows a printed circuit board 10 according to an embodiment of the invention. The circuit board 10 rests on a first rail 20 and a second rail 22, as is typically the case after a high temperature processing step. On the circuit board 10 is a connection element 100 according to the second embodiment, which in the Fig. 6 to 10 is shown applied. Due to the included stabilizing bars 119, 129, sagging of the printed circuit board 10 is reliably avoided even during processing steps which are carried out at high temperature. Thus, the circuit board 10 is not bent in the present case, but has retained its desired planar shape.

The claims belonging to the application do not constitute a waiver of the achievement of further protection.

If, in the course of the procedure, it turns out that a feature or a group of features is not absolutely necessary, the applicant is now already seeking to formulate at least one independent claim which no longer has the feature or the group of features. This may, for example, be a subcombination of a claim present at the filing date or a subcombination of a claim limited by further features of a claim present at the filing date. Such newly formulated claims or feature combinations are to be understood as covered by the disclosure of this application.

It should also be noted that embodiments, features and variants of the invention, which are described in the various embodiments or embodiments and / or shown in the figures, can be combined with each other as desired. Single or multiple features are arbitrarily interchangeable. Resulting combinations of features are to be understood as covered by the disclosure of this application.

Recoveries in dependent claims are not to be understood as a waiver of obtaining independent, objective protection for the features of the dependent claims. These features can also be combined as desired with other features.

Features that are disclosed only in the specification or features that are disclosed in the specification or in a claim only in conjunction with other features may, in principle, be of independent significance to the invention. They can therefore also be included individually in claims to distinguish them from the prior art.

Claims (15)

Connection element (100) for application to a printed circuit board (10), comprising: a number of connecting pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) extending in each case along a longitudinal direction, and a housing (105) in which the connection pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) are contained, characterized in that
at least one of the terminal pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) has a stabilizing bar (119, 129) extending through the housing (105) transversely to the longitudinal direction. Connection element (100) according to claim 1,
wherein at least one further connecting pin (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) has a further stabilizing rod (119, 129) extending through the housing (105) transversely to the longitudinal direction , Connection element (100) according to claim 2,
wherein the stabilizing rod (119, 129) and the further stabilizing rod (119, 129) are aligned parallel to one another. Connection element (100) according to claim 2 or 3,
wherein the stabilizing bar (119, 129) and the further stabilizing bar (119, 129) have respective free ends pointing in directions opposite to each other. Connection element (100) according to one of claims 2 to 4,
wherein the stabilizing rod (119, 129) and the further stabilizing rod (119, 129) are at least partially arranged side by side. Connection element (100) according to one of claims 2 to 5, - The terminal pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) in a first group (110) and a second group (120) are arranged, which are spaced apart . wherein the stabilizing bar (119) is formed on the connecting pin (111) of the first group (110), which is arranged closest to the second group (120), - And wherein the further stabilizing rod (129) is formed on that terminal pin (121) of the second group (120), which is arranged closest to the first group (110). Connection element (100) according to one of the preceding claims,
wherein the stabilizing rod (119, 129) and / or the further stabilizing rod (119, 129) are each attached to a number of connecting pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126 ) pass by. Connection element (100) according to one of the preceding claims,
wherein the terminal pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) are aligned parallel to each other. Connection element (100) according to one of the preceding claims,
which is designed as a surface-mounted device (SMD) connection element (100). Connection element (100) according to one of the preceding claims,
wherein the terminal pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) are molded in the housing (105). Connection element (100) according to one of the preceding claims,
wherein the terminal pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) are each integrally formed of metal. Connection element (100) according to one of the preceding claims,
wherein the terminal pins (111, 112, 113, 114, 115, 116, 121, 222, 123, 124, 125, 126) are electrically insulated from each other. Method for applying a connection element (100) to a printed circuit board (10), comprising the following steps: Providing a printed circuit board (10) with an attachment point for a connection element (100), Providing a connection element (100) according to one of the preceding claims, - placing the connecting element (100) on the mounting location of the printed circuit board (10), and - heating the printed circuit board (10) with the connection element (100). Printed circuit board (10) on which a connection element (100) according to one of claims 1 to 12 is applied. A printed circuit board (10) according to claim 14, which has been produced by a method according to claim 13.

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