Board-to-board, BTB connectors

Abstract

The invention relates to a board-to-board, BTB connector (100) for connecting at least a first and a second printed circuit board (210; 220), comprising: at least one optical communication channel (120) for transmitting an optical signal between the first printed circuit board (210) and the second printed circuit board (220).

Description

[0001] The invention relates to a board-to-board (BTB) connector, a printed circuit board system, an electrical unit and a vehicle.

[0002] Today's board-to-board (BTB) connectors electrically connect two or more circuit boards. The interface in the form of the BTB connector and its electrical communication channels for transmitting electrical signals and electrical power generates electrical losses, which, for example, reduce the bandwidth of the electrical communication channel at higher data rates.

[0003] Another disadvantage is that the transmission of electrical signals and electrical energy generates heat, which can negatively affect the performance of the BTB connector as well as the connected circuit boards and surrounding electronic components.

[0004] It is an object of the present invention to provide a BTB connector, a printed circuit board system, an electrical unit, and a vehicle that at least improve one or more of the aforementioned disadvantages. In particular, it is an object of the present invention to provide a BTB connector with a higher data rate and / or lower heat energy generation.

[0005] According to a first aspect, the object is achieved by a board-to-board (BTB) connector for connecting at least a first and a second printed circuit board. The connector comprises at least one optical communication channel for transmitting an optical signal between the first printed circuit board and the second printed circuit board.

[0006] The inventors have recognized that optical communication channels can be used to improve the data rate of the connector and achieve faster data transmission. The optical communication channels can at least partially replace and / or supplement existing electrically conductive communication channels for transmitting a signal between the two circuit boards. Furthermore, optical communication channels generate less heat energy than electrical communication channels or the respective associated lines.

[0007] The connector may further comprise at least one electrical supply channel for transmitting electrical energy between the first circuit board and the second circuit board. The connector may additionally or alternatively comprise at least one electrical communication channel for communicating an electrical signal between the first circuit board and the second circuit board. Consequently, the connector may be configured purely for communication with the optical communication channel. Optionally, the connector may be configured hybridly with the at least one electrical communication channel. The at least one electrical supply channel may be provided for an electrical energy supply.

[0008] The connector can be a BTB connector and / or a board-to-board connector or connector. The connector can comprise a corresponding number of optical communication channels, electrical supply channels, and / or electrical communication channels for signaling and / or for electrically supplying the first and second circuit boards. Circuit boards can be designed for one or more predetermined purposes. Consequently, it is often necessary to connect two or more circuit boards to one another for a predetermined purpose or multiple purposes, which is achieved via a BTB connector. Using such a BTB connector, various and in particular multiple interfaces of one circuit board can be connected to interfaces of the other circuit board.

[0009] The electrical supply channel can be designed to contact the first circuit board and the second circuit board, in particular respective electrical interfaces, in order to transmit the electrical energy.

[0010] Transmitting may include sending and / or receiving the electrical energy or the respective signal.

[0011] The optical signal can be designed as a bus system signal(s), light pulse(s) and / or as an individual signal.

[0012] The transmission of the electrical energy, the electrical signal and / or the optical signal can take place in particular in a connected state of the connector with the first circuit board and the second circuit board.

[0013] More than two circuit boards can be connected using the connector. For this purpose, the connector can comprise two, three, or more electrical supply channels, electrical communication channels, and / or optical communication channels. At least two of the two or more circuit boards can be connected to one another using an electrical supply channel, an electrical communication channel, and / or an optical communication channel.

[0014] A communication channel can be understood as a channel that communicates a signal between the two circuit boards. A supply channel can be understood as providing the power supply, in this case the electrical supply.

[0015] The first circuit board and / or the second circuit board may be a printed circuit board and / or a conductive board, wherein the conductive board has at least one conductive pattern and / or at least one circuit. The board may be included in an electronic unit.

[0016] The optical communication channel can be configured to be contactable with the first and / or second circuit board. Thus, the optical communication channel can be in physical contact and / or direct contact with the respective circuit board. Alternatively or additionally, the optical communication channel can be configured to be spaced apart from the first and / or second circuit board, particularly in the connected state. An advantage of optical signals is that they can also be transmitted via air or a vacuum, so that physical contact between the optical communication channel and the respective circuit board is not necessarily required for the optical signal to be transmitted.It is preferred that a distance between the optical communication channel, in particular an end section of the optical communication channel, to the respective circuit board is minimal in order to optimize the transmission of the optical communication channel.

[0017] The optical communication channel may comprise a first optical element, in particular a first lens, for the first circuit board. Alternatively or additionally, the optical communication channel may comprise a second optical element, in particular a second lens, for the second circuit board.

[0018] The first optical element can be configured and / or comprised for transmitting the optical signal at a first end portion of the optical communication channel. The second optical element can be configured and / or comprised for transmitting the optical signal at a second end portion of the optical communication channel.

[0019] By means of the first and / or the second optical element, the transmission of the optical signal can be improved, in particular when transmitting from the optical communication channel into the first or second circuit board and / or from the first or second circuit board into the optical communication channel.

[0020] Transmitting the optical communication channel may include redirecting the optical signal by means of the first or second optical element.

[0021] The first circuit board and / or the second circuit board can be configured to transmit and / or receive the optical signal. For this purpose, the first circuit board and / or the second circuit board can comprise an optical waveguide structure. Consequently, the first circuit board and / or the second circuit board can generate and / or receive the optical signal without the need for a corresponding converter, in particular an electrical-to-optical converter.

[0022] Alternatively or additionally, the first circuit board can comprise a third optical element, in particular a third lens, and / or the second circuit board can comprise a fourth optical element, in particular a fourth lens, for transmitting the optical signal. Consequently, at least one optical element of the optical communication channel and / or of the respective circuit board can be provided for transmitting the optical signal. If, for example, the first circuit board has the third optical element, the first optical element can be omitted and the optical signal can be transmitted using the third optical element.

[0023] The optical communication channel can have a first converter, in particular an electrical-optical converter for the first circuit board, and / or a second converter, in particular an electrical-optical converter for the second circuit board. The first converter can be configured to convert an electrical signal from the first circuit board into the optical signal and / or to convert the optical signal into an electrical signal for the first circuit board. The second converter can be configured to convert an electrical signal from the second circuit board into the optical signal and / or to convert the optical signal into an electrical signal for the second circuit board.

[0024] If the first circuit board and / or the second circuit board does not have a respective optical waveguide structure and is, for example, only designed to transmit and / or receive an electrical signal, the conversion from electrical signal to optical signals and vice versa can be carried out by means of the first converter and / or the second converter.

[0025] The optical communication channel can extend from a first section for the first circuit board to a second section for the second circuit board. In the connected state, the first section of the first circuit board and the second section of the second circuit board can face each other. The first section can include the first optical element and / or the first transducer and / or consist of at least one of these. The second section can include the second optical element and / or the second transducer and / or consist of at least one of these.

[0026] The first section can have a first transducer section and a first element section, and the first element section can be arranged between the first transducer section and the second section. This arrangement is advantageous when the first circuit board is not designed to transmit and / or receive the optical signal and thus the conversion of the respective signal must take place. The first transducer section can have the first transducer, and the first element section can have the first optical element. Here, the first and second transducer sections can be respective end sections of the optical communication channel. The optical communication channel can extend from one end section to the other end section. The first element section can be connected to and / or adjoin the first transducer section.The second element section may be connected to and / or adjoin the second transducer section.

[0027] The connector may include an intermediate portion disposed between the first portion and the second portion.

[0028] Alternatively or additionally, the second section may comprise a second transducer section and a second element section, and the second element section may be arranged between the second transducer section and the first section. The second element section may be connected to and / or adjoin the second transducer section. The second transducer section may comprise the second transducer, and the second element section may comprise the second optical element.

[0029] The first section can be one or the end section of the optical communication channel and can comprise the first converter section or the first element section. Depending on whether the first circuit board comprises the waveguide structure and whether this comprises the third optical element or the third converter, the first section can be configured appropriately. The first converter section can comprise the first converter, or the first element section can comprise the first optical element.

[0030] The second section may be one or the other end section and may include the second transducer section or the second element section. The second section may be configured similarly to the first section based on the configuration of the second circuit board. The first transducer section may include the first transducer, or the first element section may include the first optical element.

[0031] The optical communication channel can be designed to provide transmission of the optical signal for an optical communication path, in particular between the first and the second circuit board. For this purpose, the optical communication channel can be assigned to a corresponding communication interface of the first circuit board and / or the second circuit board. The optical communication channel can be used to transmit and / or receive the optical signal. Alternatively, two or more optical communication channels can be assigned to one optical communication path. With two optical communication channels, the optical signal for this optical communication path can be transmitted using a first of the optical communication channels and received using the other of the optical communication channels.

[0032] The at least one optical communication path can be assigned to one or more lanes of the first and / or second circuit board.

[0033] The electrical supply channel can be designed to provide a transmission of electrical energy for a supply path, in particular between the first and second circuit boards. For this purpose, the electrical supply channel can be assigned to a corresponding supply interface of the first circuit board and / or the second circuit board. Electrical energy can be transmitted and / or received via one supply path. Alternatively, two or more electrical supply channels can be assigned to the supply path. With two electrical supply channels, the electrical energy for this supply path can be transmitted via a first of the electrical supply channels and received via the other of the electrical supply channels.

[0034] The electrical communication channel can be designed to provide communication of the electrical signal for an electrical communication path, in particular between the first and second circuit boards. Furthermore, the electrical communication channel can be assigned to a corresponding communication interface of the first circuit board and / or the second circuit board. The electrical signal can be sent and / or received via an electrical communication path. Alternatively, two or more electrical communication channels can be assigned to the electrical communication path. With two electrical communication channels, the electrical signal can be sent via a first of the electrical communication channels and received via the other of the electrical communication channels.

[0035] The at least one electrical communication path may be associated with one or more corresponding lanes of the first and / or second circuit board.

[0036] The connector can further comprise at least one or the electrical communication channel, which is designed to transmit an or the electrical signal between the first circuit board and the second circuit board. The electrical communication channel can be designed to be contactable and / or connectable to the first and second circuit boards. Consequently, both electrical and optical signals can be transmitted between the first and second circuit boards by means of the connector. The electrical signal, due to the electrical communication channel, can be transmitted at a lower data rate than the optical signal, due to the optical communication channel.

[0037] The respective converter can form the respective end section, since the respective converter is designed to convert the electrical or optical signal, so that the electrical or optical signal can be received and / or transmitted by the respective circuit board.

[0038] The optical communication channel may comprise one, two, or more optically conductive light guides, particularly fibers, for conducting the optical signal. The electrical supply channel may comprise one, two, or more electrical conductors for conducting the electrical energy.

[0039] The connector can be designed to be arranged, soldered and / or glued to at least one of the printed circuit boards for connection, in particular mechanical connection, to the latter.

[0040] The connector may have a casing that at least partially encloses the optical communication channel, the electrical communication channel, and / or the electrical supply channel. The connector may further comprise one or more insulations for insulating the optical communication channel, the electrical communication channel, and / or the electrical supply channel. The insulations may be arranged within the casing. Alternatively or additionally, the casing may be electrically and / or optically insulating.

[0041] The connector, in particular the sheath, can be designed for connection, in particular mechanical connection, to the at least one printed circuit board. The connector, in particular the sheath, can comprise a first fastening section for the first printed circuit board and / or a second fastening section for the second printed circuit board.

[0042] The casing can extend from the first fastening section to the second fastening section. The first and / or second fastening section can be configured such that they can be contacted with the respective circuit board.

[0043] The first fastening section can be designed to be connectable or arrangeable on and / or with a connection side of the first circuit board. The first fastening section can be connected to the connection side by soldering with a solder paste. The second fastening section can be designed to be connectable or arrangeable on and / or with a connection side of the second circuit board. The second fastening section can be connected to the connection side by soldering with a solder paste. Statements regarding the connection of the connector to the first circuit board can apply analogously to a connection of the connector to the second circuit board and are therefore not repeated.

[0044] According to a second aspect, the object is achieved by a printed circuit board system comprising a first printed circuit board and / or a second printed circuit board. The printed circuit board system further comprises at least one board-to-board (BTB) connector according to the first aspect, wherein the connector is connected in particular to the first and / or second printed circuit board. Three, four, or more printed circuit boards may be included, wherein these are connectable and / or connected by means of the one connector or multiple connectors according to the first aspect.

[0045] According to a third aspect, the object is achieved by an electronic unit comprising a board-to-board (BTB) connector according to the first aspect and / or a printed circuit board system according to the second aspect. The electronic unit can be a computer. The electronic unit can further comprise a memory, a graphics card in the form of one of the printed circuit boards or separately, a processor in the form of one of the printed circuit boards or separately, and / or the like.

[0046] The object is achieved according to a fourth aspect by a vehicle comprising a board-to-board, BTB connector according to the first aspect, a printed circuit board system according to the second aspect and / or an electronic unit according to the third aspect.

[0047] Features described with respect to the connector according to the first aspect may be embodied as features of the printed circuit board system according to the second aspect, the electronic unit according to the third aspect, and the vehicle according to the fourth aspect.

[0048] Preferred embodiments are explained using the accompanying figures. They show: Fig. 1 and Fig. 2 schematic side views of a printed circuit board system with two printed circuit boards connected to each other by means of a board-to-board connector; Fig. 3 a schematic plan view of the connector of the Fig. 1; Fig. 4 and Fig. 5 schematic representations of different designs of the connector and the circuit boards; Fig. 6 a schematic representation of an electronic unit with a printed circuit board system; and Fig. 7 a schematic representation of a vehicle with the electronic unit.

[0049] In the figures, identical or essentially functionally identical or similar elements are designated by the same reference numerals. To aid understanding, three-dimensional coordinate systems with x, y, and z axes are shown in the figures.

[0050] Fig. 1 and Fig. 2 show different side views of a printed circuit board system 100 with a first printed circuit board 210 and a second printed circuit board 220, which are connected to each other by means of a board-to-board connector 100.

[0051] The connector 100 comprises at least one electrical supply channel 110 for transmitting electrical energy between the first circuit board 210 (see Fig. 2) and the second circuit board 220 and further at least one optical communication channel 120 for transmitting an optical signal between the first circuit board 210 and the second circuit board 220 (see Fig. 1). Furthermore, the connector 100 may include at least one electrical communication channel for transmitting an electrical signal between the first circuit board 210 and the second circuit board 220.

[0052] By means of the at least one electrical supply channel 110, electrical energy can be transmitted from the first circuit board 210 to the second circuit board 220 and / or vice versa.

[0053] State-of-the-art connectors are designed solely for transmitting electrical energy and electrical signals and feature corresponding electrically conductive communication or supply channels for this purpose. However, the data transmission rate using the electrically conductive communication channels is limited.

[0054] The invention improves the data transmission rate by providing at least one optically conductive communication channel 120 instead of an electrically conductive communication channel. Optical signals can be transmitted faster and with less loss, so that a higher data transmission rate can be provided using the connector 100.

[0055] Depending on whether the first circuit board 210 and / or the second circuit board 220 are configured to transmit and / or receive the optical signal, the optical communication channel 120 may comprise a first optical element 121, a second optical element 122, a first converter 141 and / or a second converter 142.

[0056] Alternatively or additionally, the first circuit board 210 or the second circuit board 220 may have a third optical element 211, a fourth optical element 212, a third converter 231 and / or a fourth converter 232 for transmitting and / or receiving the optical signal.

[0057] The first, second, third, and / or fourth optical element 121, 122, 211, 212 may be a lens. The first, second, third, and / or fourth converter may be an electro-optical converter. The respective converter may be configured to convert an electrical signal into an optical signal and / or vice versa.

[0058] A converter is to be provided in the optical communication channel 120 or the respective circuit board 210, 220, in particular if the respective circuit board 210, 220 is not designed to transmit and / or receive the optical signal. Accordingly, the respective converter must convert the optical signal into an electrical signal and / or vice versa. This particularly applies to the case where the respective circuit board 210, 220 is designed to transmit and / or receive the electrical signal. The following Fig. 4 and Fig. 5 show different variations of optical elements and converters. If the first and / or second circuit board 210, 220 has a waveguide structure, for example, the respective circuit board 210, 220 can transmit and / or receive the optical signal.

[0059] Fig. 3 shows a schematic plan view of the connector 100 of the Fig. 1 and Fig. 2. How the Fig. As can be seen from Figure 3, the connector has two electrically conductive supply channels 110, 110' and five optically conductive communication channels 120-120'''. Each channel 110, 120 can be configured to transmit and / or receive the electrical energy or the optical signal.

[0060] For example, a first of the two electrically conductive supply channels 110, 110' can be configured to transmit electrical energy from the first circuit board 210 to the second circuit board 220. The second of the two electrically conductive supply channels 110, 110' can be configured to transmit electrical energy from the second circuit board 220 to the first circuit board 210.

[0061] Likewise, one of the optical supply channels 120-120''' can be configured to transmit and / or receive the optical signal. The optical communication channel 120 can be assigned to a first data path, the optical communication channels 120', 120'' can be assigned to a second data path, and / or the optical communication channels 120''', 120'''' can be assigned to a third data path of the circuit boards 210, 220. Depending on the number and / or requirements of the data paths, a corresponding number of optical communication channels 120 and electrical communication channels can be provided.

[0062] The electrical supply channels 110, 110' can be designed such that they can be contacted or are contacted with the first circuit board 210 and the second circuit board 220 (see Fig. 2).

[0063] The optical communication channels 120-120'''' can be designed such that they can be contacted or contacted with the first circuit board 210 and the second circuit board 220 (see Fig. 4 and Fig. 5) and / or are spaced apart from them. For example, depending on the component, there may be a distance between the optical communication channel 120 and one of the circuit boards 210, 220. The advantage of optical signals is that they can be transmitted across a vacuum or an air gap. However, the distance should preferably be as small as possible.

[0064] The connector 100 has a first portion for the first circuit board 210 and a second portion for the second circuit board 220. The first portion may face and / or be connected to the first circuit board 210. The second portion may face and / or be connected to the second circuit board 220.

[0065] According to the Fig. 4 (a), the second section includes the second optical unit 122, and the first circuit board 210 includes the third optical unit 211. Consequently, the first and second circuit boards 210, 220 can transmit and / or receive the optical signal, for example, because they have a waveguide structure. In this case, a converter can be omitted.

[0066] According to the Fig. 4 (b), the first section comprises the first optical unit 121 and the second circuit board 220 comprises the fourth optical unit 212. As shown in the Fig. 4 (a), the first and second circuit boards 210, 220 can be configured to transmit and / or receive the optical signal. Consequently, no converter is required here either.

[0067] Furthermore, the first and / or second circuit boards 210, 220 can comprise the third and / or fourth optical elements 211, 212, respectively, and / or the optical communication channel 120 can comprise the first and / or second optical elements 121, 122. Consequently, it is also possible to provide the first and third optical elements 121, 211 and / or the second and fourth optical elements 122, 212. The configuration of the first to fourth optical elements 121, 122, 211, 212 can be determined based on the desired transmission properties for the optical signal.

[0068] The Fig. Figure 5 shows embodiments in which the circuit boards 210, 220 do not have a waveguide structure and are designed exclusively for transmitting and / or receiving an electrical signal. In this case, the optical signal must be converted into the electrical signal and vice versa.

[0069] Fig. 5 (a) shows the first section with the first optical element 121 and the first transducer 141. The second section has the second optical element 122 and the second transducer 142. The first transducer 141 advantageously faces the first circuit board 210 and / or is in contact with it so that the first transducer 141 can convert the optical signal into an electrical signal when the optical signal is sent to the first circuit board 210. The first optical element 121 can improve the transmission of the optical signal to the first transducer 141. Alternatively, the respective optical elements 121, 122 can be omitted here in the first section and / or the second section. Furthermore, when an electrical signal is sent from the first circuit board 210, the electrical signal can be converted into the optical signal by means of the first transducer 141.

[0070] Similar to the first converter 141 and the first optical element 121, the second converter 142 and the second optical element 122 can be used for electrical to optical signal conversion and transmission enhancement.

[0071] Fig. 5 (b) shows the first section with the first optical element 121, the first circuit board 210 with the third transducer 231 and the second circuit board 220 with the fourth optical element 212 and the fourth transducer 232.

[0072] Consequently, the respective optical element and / or the respective converter can be included in the optical communication channel 120 or the respective circuit board 210, 220.

[0073] The first optical element 121 may comprise or form a first element portion. The first converter 141 may be comprised by or form a first converter portion of the connector 100. The first element portion and the first converter portion may be comprised by the first portion.

[0074] The second optical element 122 may include or form a second element portion. The second transducer 142 may be included in or form a first transducer portion of the connector 100. The second element portion and the second transducer portion may be included in the second portion.

[0075] According to the Fig. 4 (a), the second section has only the second element section, so that here the second element section can form an end section of the second section.

[0076] According to the Fig. 4 (b), the first section has only the first element section, so that here the first element section can form an end section of the first section.

[0077] According to the Fig. 5(a), the first section comprises the first transducer section and the first element section, with the first transducer section forming the end section. The first element section is arranged between the first transducer section and the second section. Similarly, in the second section, the second transducer section forms the end section, and the second element section is arranged between the second transducer section and the first section.

[0078] Fig. 6 shows an electronic unit 300 with a printed circuit board system 200. The printed circuit board system 200 comprises the first and second printed circuit boards 210, 220, which are connected and / or connectable to one another by means of at least one connector 100. The electronic unit 300 can be a computer. Furthermore, the electronic unit 300 can comprise a memory, a graphics card, in particular in the form of and / or with one of the two printed circuit boards 210, 220, a processor, in particular in the form of and / or with one of the two printed circuit boards 210, 220, and / or other electrical units.

[0079] Fig. 7 shows a vehicle 400 with an electronic unit 300, wherein the electronic unit 300 includes the printed circuit board system 200. Reference symbol 100 board-to-board connectors 110, 110' electrical supply duct 120-120'''' optical communication channel 121 first optical element 122 second optical element 130 Sheathing 140 filling material 141 first converter 142 second converter 200 PCB system 210 first circuit board 220 second circuit board 211 third optical element 212 fourth optical element 231 third converter 232 fourth converter 300 Electronic Unit 400 vehicles

Claims

[1] Board-to-board, BTB connector (100) for connecting at least a first and a second printed circuit board (210; 220), comprising: at least one optical communication channel (120) for transmitting an optical signal between the first circuit board (210) and the second circuit board (220). [2] Connector (100) according to claim 1, further comprising: at least one electrical supply channel (110) for transmitting electrical energy between the first circuit board (210) and the second circuit board (220); and / or at least one electrical communication channel for transmitting an electrical signal between the first circuit board (210) and the second circuit board (220). [3] Connector (100) according to claim 1 or 2, wherein the optical communication channel (120) is designed to be contactable with the first and / or the second circuit board (210; 220), and / or wherein the optical communication channel (120) is designed to be spaced from the first and / or the second circuit board (210; 220). [4] Connector (100) according to one of the preceding claims, wherein the optical communication channel (120) comprises a first optical element (121), in particular a first lens for the first circuit board (210) and / or a second optical element (122), in particular a second lens for the second circuit board (220). [5] Connector (100) according to one of the preceding claims, wherein the optical communication channel (120) comprises a first converter (141) for the first circuit board (210) and / or a second converter (142) for the second circuit board (220), wherein the first converter (141) is designed to convert an electrical signal of the first circuit board (210) into the optical signal and / or to convert the optical signal into an electrical signal for the first circuit board (210), wherein the second converter (142) is configured to convert an electrical signal of the second circuit board (220) into the optical signal and / or to convert the optical signal into an electrical signal for the second circuit board (220). [6] Connector (100) according to one of claims 4 or 5, wherein the optical communication channel (120) extends from a first section for the first circuit board (210) to a second section for the second circuit board (220), wherein the first section comprises the first optical element (121) and / or the first transducer (141) and / or consists of at least one of these, wherein the second section comprises the second optical element (122) and / or the second transducer (142) and / or consists of at least one of these. [7] Connector (100) according to claim 6, wherein the first section comprises a first transducer section and a first element section, and the first element section is arranged between the first transducer section and the second section, wherein the first transducer section comprises the first transducer (141) and the first element section comprises the first optical element (121), and / or wherein the second section comprises a second transducer section and a second element section, and the second element section is arranged between the second transducer section and the first section, wherein the second transducer section comprises the second transducer (142) and the second element section comprises the second optical element (122). [8] Connector (100) according to claim 6 or 7, wherein the first section is an end section of the optical communication channel (120) and comprises the first converter section or the first element section, wherein the first transducer section comprises the first transducer (141) or the first element section comprises the first optical element (121), and / or wherein the second portion is an end portion and comprises the second transducer portion or the second element portion, wherein the second transducer section comprises the second transducer (142) or the second element section comprises the second optical element (122). [9] Connector (100) according to one of the preceding claims, wherein the optical communication channel comprises one, two or more optically conductive light guides, in particular fibers for conducting the optical signal. [10] Connector (100) according to one of the preceding claims, wherein the connector (100) is designed to be arranged, soldered and / or glued to at least one of the printed circuit boards (210; 220) for connection, in particular mechanical connection. [11] Printed circuit board system, comprising: a first circuit board (210) and / or a second circuit board (220); at least one board-to-board, BTB connector (100) according to one of claims 1 to 10, wherein the connector (100) is connected in particular to the first and / or the second circuit board. [12] Electronic unit (300) comprising a board-to-board, BTB connector (100) according to one of claims 1 to 10 and / or a printed circuit board system (200) according to claim 11. [13] A vehicle (400) comprising a board-to-board, BTB connector (100) according to any one of claims 1 to 10, a printed circuit board system (200) according to claim 11 and / or an electronic unit (300) according to claim 12.

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