AT17763U1 - SMD terminal as well as SMD terminal assembly - Google Patents

Abstract

The present invention relates to an SMD terminal (2), in particular an SMD connection terminal or SMD connection terminal, having a contact body (3) with a clamping body (30) with a clamping point (K) for fastening an electrical conductor in an insertion direction (E ), and a flat connection area (31) extending in a plane (X) for surface mounting the SMD terminal (2) on a printed circuit board (L), and an insulating wall (4) which extends along at least part of the contact body ( 3) laterally limiting with respect to the insertion direction (E) in such a way as to protrude with a projection section (40) on a side of the plane (X) facing away from the contact body (3). The invention also relates to a corresponding SMD terminal with two corresponding contact bodies (3), with the connection areas (31) of all contact bodies (3) extending in the same plane (X), and with at least one between two adjacent contact bodies (3). Part of the contact body (3) laterally separating insulation wall (4) extends in such a way as to protrude with a projection portion (40) on a side of the plane (X) facing away from the contact bodies (3). The invention also relates to an SMD terminal arrangement (1) with a printed circuit board (L) and a surface-mounted SMD terminal according to the invention.

Description

Description

SMD TERMINAL AND SMD TERMINAL ARRANGEMENT

The present invention relates to an SMD (surface-mounted device; surface-mounted component) terminal, in particular an SMD connection terminal or SMD connection terminal and the SMD terminal having SMD terminal assembly, which also has a printed circuit board on which the SMD terminal(s) is/are intended to be surface mount.

Terminals or connecting terminals are well known from the prior art. On the one hand, these can be provided loose and, if necessary, can be fastened, for example, by means of connecting elements (e.g. catches, screws, adapters, etc.). It is also conceivable to provide these terminals on a printed circuit board. This can be done, for example, using through-hole technology (THT), in which the wire connections (solder pins) of the terminal are inserted through contact holes in the printed circuit board and then soldered to a conductor track on the printed circuit board on the back. Alternatively, e.g. also by means of surface mounting (surface-mounted technology; SMT), in which the component as a surface-mounted component (surface-mounted device; SMD) is soldered directly on the side of the component lying flat on the circuit board by means of flat connection areas (contact lugs).

For example, when using such terminals for the network area but also for other purposes, there are different high demands on the given clearance and creepage distance. In order to comply with this, the current-carrying components, and therefore also the contact bodies of the respective terminal, must be spaced appropriately laterally. The clearance and creepage distances can be increased by providing additional insulating components or structures between the current-carrying components. For example, in the case of printed circuit boards with terminals provided in through-hole mounting, it was known to allow sections of a superordinate, insulating assembly housing (e.g. a lamp housing) to protrude between the respective contact elements of the terminals in order to achieve an insulating spatial separation of the soldered connections provided on the back. However, a separation designed in this way is unsuitable for SMD terminals, since the contact areas between the terminal and the printed circuit board are covered by the terminal itself and the accessibility of these contact areas, for example, for a superordinate assembly housing, is not given. In this respect, especially in the case of SMD terminals, their current-carrying components are provided laterally spaced apart as far as required by the required clearances and creepage distances. The width of such a structure depends not least on the required air and creepage distances, which increase accordingly with an increasing number of poles of a multi-pole terminal structure, which in turn means a minimum circuit board width with the required number of poles or a limited number of poles with a required maximum width of the circuit board result.

It is therefore an object of the present invention to provide an SMD terminal and a corresponding SMD terminal arrangement, which allow the most compact possible design while maintaining the desired air and creepage distances.

[0005] This object is solved by the subject matter of the independent claims. The dependent claims develop the central idea of the present invention in a particularly advantageous manner.

According to a first aspect, the present invention relates to an SMD terminal, in particular an SMD connection terminal or SMD connection terminal. The SMD terminal has a contact body. The contact body in turn has a clamping body with a clamping point for fastening an electrical conductor in an insertion direction. Furthermore, the contact body has a planar connection area extending in one plane for surface mounting the SMD terminal on a printed circuit board. The SMD terminal also has an insulating wall, which extends along at least part of the contact body (primarily

preferably at least the clamping body) with respect to the insertion direction extends laterally in such a way as to protrude on a side of the plane facing away from the contact body with a projection section (i.e. a projection wall section or projection insulating wall section). The latter in particular in order to lengthen a clearance and creepage distance of two identical SMD terminals arranged next to one another laterally with respect to the insertion direction in comparison to comparable SMD terminals without such a projection section.

The SMD terminal thus carries an air and creepage lengthening element (namely the extended in the projection portion insulation wall, which consequently also forms a wall portion), which is automatically provided between these when mounting several such SMD terminals next to each other in a row becomes. Thus, even if the SMD terminals are difficult to access in the connection area, a measure that lengthens clearances and creepage distances can be provided in a safe manner, so that several such SMD terminals can also be arranged next to one another in a row in a particularly compact manner.

The SMD terminal can also have a further insulation wall, which laterally delimits the contact body on a side facing away from the contact body of the insulation wall, with the further insulation wall also extending along at least part of the contact body (preferably at least the clamping body) with respect to the Plug-in direction extends laterally delimiting in order to protrude on a side of the plane facing away from the contact body with a further projection section (i.e. a more comparable projection wall section or projection insulating wall section). Consequently, the protruding section and the further protruding section then protrude on the same side with respect to the plane as a wall section and thus form a corresponding measure that lengthens air gaps and creepage distances on both sides of the contact body.

According to a further aspect, the present invention also relates to an SMD terminal, in particular an SMD connection terminal or SMD connection terminal, which has at least two or more contact bodies. The contact bodies in turn each have a clamping body with a clamping point for fastening an electrical conductor in an insertion direction and a flat connection area extending in one plane for surface mounting the SMD terminal on a printed circuit board. The connection areas of at least one, several or all contact bodies preferably extend essentially in the same plane. Between each two adjacent contact bodies (i.e. between two or in each case all adjacent contact bodies), an insulating wall laterally separating at least part of the contact bodies (preferably at least their clamping bodies) extends in such a way that, on a side of the plane facing away from these contact bodies, there is a projection section (i.e. a Projection wall section or projection insulation wall section) to protrude. The latter in particular in order to lengthen an air and creepage distance between two adjacent contact bodies of the SMD terminal in comparison to such contact bodies of an SMD terminal without such projection sections.

Consequently, an SMD terminal is provided which has a plurality of contact bodies, with two adjacent or each contact body being electrically insulated laterally from the respective adjacent contact body in such a way that an insulating wall providing the insulation also protrudes from the above-described plane in order to thus increasing a clearance and creepage distance between the contact bodies so adjacent with respect to an SMD terminal in which the projecting portions would not be provided. In this way, the SMD terminal itself can bring the measures that lengthen the air and creepage distances (namely the insulation wall that is extended into the protruding section, which consequently also forms a wall section) directly, so that these are automatically provided when the same is installed. Depending on the design of the protruding section, a corresponding clearance and creepage distance can be provided, depending on this and the given electrical requirements, a particularly compact provision of the contact bodies is possible since they are laterally close to one another; this despite the difficult accessibility of the SMD terminal block in the connection areas.

The insertion directions of the contact bodies are preferably aligned parallel to one another.

tet. A particularly compact and easy-to-use SMD terminal can thus be provided. The insertion direction of the simple SMD terminal according to the first aspect or the insertion directions of the SMD terminal according to the second aspect can extend or be aligned parallel to the plane, which can lead to a particularly compact embodiment and also compact operability. since the corresponding electrical conductors can be fed flat in the plane of the corresponding SMD terminal.

[0012] The contact bodies can be arranged side by side in a row with respect to the insertion directions and are preferably distributed parallel to the plane. In this way, an SMD terminal can be provided with any number of contact bodies arranged side by side and thus in a particularly compact manner. Due to the arrangement distributed parallel to the plane, the use of identical parts for the contact bodies is particularly easy, since these then provide the connection areas in the same way for surface mounting, which in turn allows easy connection via the connection areas that are preferably provided in the same plane.

The SMD terminal can also have at least one additional insulating wall, which laterally delimits at least one or at least two additional insulating walls, which laterally delimit/delimit at least both outer contact bodies of the contact bodies arranged in series on a side facing away from the contact body of the insulating wall, wherein the further insulating wall also extends laterally along at least part of the associated contact body (preferably the associated clamping body) with respect to the insertion direction in such a way as to protrude with a further projection section on a side of the plane facing away from the contact body. The provision of at least one further insulating wall with a further projection section on one side of the SMD terminal makes it possible to provide a SMD terminal which can be combined in any number in series with other similar SMD terminals next to one another, with the SMD terminal also being a partition to the neighboring SMD terminal. If a corresponding further insulating wall with a further protruding section is arranged opposite on both sides, it can also be made possible, regardless of the design of adjacent electrical components, to bring a measure directly with them that lengthens the air and creepage distances.

The insulating walls, ie the insulating walls preferably including the further insulating walls, are preferably aligned parallel to one another. In this respect, a configuration of the contact bodies connected to one another that is as symmetrical as possible can be provided. On the one hand, this enables simple production of the SMD terminal. In addition, a clear and reliable demarcation of the contact bodies can be easily provided by means of appropriate isolating measures. In addition, the parallel configuration offers a particularly compact design for a corresponding SMD terminal.

At least the further projection sections and preferably the entire further insulation wall can preferably be designed narrower than and preferably half as wide as the or one of the insulation walls or at least the projection sections thereof, viewed in a direction transverse to their extension direction or transverse to the insertion direction of the associated contact body. In this way, the outer wall areas of the terminal can be made narrower, so that when terminals of the same type are arranged in a row, there is a combined width of the insulating walls in the area between the terminals. A sufficient clearance and creepage distance can thus be made possible with a particularly compact design, even in the contact area between two adjacent clamps.

The insulation wall/walls, preferably also the further insulation wall(s) insulation walls, can preferably extend in such a way that they extend along at least that part of the associated contact body which is transverse to the direction of insertion and parallel to the plane furthest to the side outwards - than towards the insulating wall. In this respect, the insulation wall at a preferred area to extend an air and

Creepage distance of the SMD terminal can be provided.

The insulation wall/walls, preferably also the further insulation wall/walls, can extend in the insertion direction along the entire terminal body or contact body adjacent to it/them, preferably with respect to the insertion direction in and/or counter to the insertion direction over the Terminal body and more preferably protrude the entire contact body. In this way, the clearance and creepage distance can be set in any way.

The connection area preferably extends essentially parallel to the respective insertion direction. In this respect, a compact design of the respective contact bodies and thus of the SMD terminal as a whole, seen transversely to the direction of insertion, can be achieved.

Each of the clamping bodies can have a contact frame and a clamping spring held therein for preferably tool-free and also preferably detachable receiving of an electrical conductor inserted in the insertion direction. By means of such a clamping body, it is possible to connect an electrical conductor in a simple manner and with a known basic structure.

The SMD terminal can also have an insulating housing, in which the one or more contact bodies are at least partially accommodated. To enable the SMD terminal to be connected to a printed circuit board, the connection areas are exposed to the outside with respect to the insulating housing. According to a preferred embodiment, the insulating wall/walls and also preferably the further insulating wall/walls can be formed integrally with the insulating housing. In this way, the insulating wall can easily be formed integrally with an insulating housing that accommodates the contact bodies, which simplifies the production of the insulating regions and thus of the SMD terminal overall.

[0021] According to a further aspect, the present invention further relates to an SMD terminal arrangement. This has at least one of the SMD terminals according to the invention. In addition, the SMD terminal arrangement also has at least one circuit board with the connection area of the SMD terminal corresponding connection point or the connection areas of the SMD terminal corresponding connection points, via which the SMD terminal(s) are connected to the circuit board in surface mounting, the circuit board each projection section (that is, each projection section and, if present, also each additional projection section) has a recess into which the respective projection section protrudes.

By providing a corresponding recess in the circuit board, the SMD terminal can be provided in a flat and compact manner on the circuit board in a surface mount manner, while at the same time the clearance and creepage distance lengthening measures, namely the projection portions, are provided safely and automatically become. Consequently, the projecting portions do not interfere with the mounting of the SMD terminal on the circuit board.

[0023] The recess or recesses are preferably designed as through-openings, ie pass through the printed circuit board, in particular transversely to its direction of extension, which is generally flat. The protruding section or sections then preferably protrude at least partially into the respective through-opening or completely protrude through the printed circuit board via the through-opening. The provision of a corresponding through-opening enables the use of inventive SMD terminals with projection sections projecting as far as desired with respect to the plane, so that a correspondingly required clearance and creepage distance can be provided in any way by designing the insulating wall. Such a printed circuit board can also be used to provide or combine SMD terminals according to the invention with projection sections that protrude to different extents.

Further exemplary embodiments and advantages as well as features of the present invention will now be described with reference to the figures of the accompanying drawings. Show it:

1 shows a front view of an inventive SMD terminal arrangement with an SMD terminal according to a first exemplary embodiment of the present invention,

[0026] FIG. 2 shows a side view of the SMD terminal arrangement according to FIG. 1,

3 is a plan view of the SMD terminal assembly of FIG. 1;

4 is a perspective view from below of the SMD terminal arrangement according to FIG. 1, [0029] FIG. 5 is a printed circuit board of the SMD terminal arrangement according to FIG. 1,

[0030] FIG. 6 shows a perspective bottom view of the SMD terminal according to the invention according to FIG. 1,

[0031] FIG. 7 shows a front view of the SMD terminal according to FIG. 6,

8 is a bottom perspective view of an SMD terminal according to another embodiment of the present invention, and

9 is a front view of the SMD terminal according to FIG. 8.

Figures 1 to 4 show an SMD terminal assembly 1 according to the present invention.

The SMD terminal assembly 1 has at least one - on inventive SMD terminals 2 - two here. The SMD terminals 2 form an independent part of the present invention and are described in more detail below.

Figures 1 to 4 and 6 and 7 show an SMD terminal 2 according to a first embodiment of the present invention. Figures 8 and 9 show an SMD terminal 2 according to a second embodiment of the present invention. The SMD terminal 2 according to the invention is in particular an SMD connection terminal or an SMD connecting terminal.

The SMD terminal 2 has at least two or more - three here - contact body 3 on. The contact bodies 3 in turn each have a clamping body 30 with a clamping point K for fastening an electrical conductor, not shown here, in an insertion direction E. As can essentially be seen from FIGS. 1, 3 and 6 to 9, each of the clamping bodies 30 can have a contact frame 32 and a clamping spring 33 held therein for receiving an electrical conductor inserted in the insertion direction E, preferably without tools and also preferably releasably. For this purpose, the clamping spring 33 can have a contact leg which forms the clamping point K with a clamping section of the contact frame 32 and is pretensioned towards the clamping section. The contact leg can be moved between such a closed position and an open position in which the contact leg is spaced from the clamping portion for the insertion of an electrical conductor. Alternatively, the clamping point K can also be provided in some other way, for example by means of a screw connection.

Furthermore, each of the contact bodies 3 has a flat connection area 31 extending in a plane X for surface mounting of the SMD terminal 2 on a printed circuit board L. As shown in the exemplary embodiments, these connection areas 31 are designed in particular as so-called contact lugs , which are placed flat on corresponding connection points A of a printed circuit board L and then electrically connected to them (e.g. by means of a soldered connection). The connection areas 31 of all contact bodies 3 can preferably extend in the same X plane. The connection area 31 can preferably extend essentially parallel to the respective plug-in direction E. As shown, each connection area 31 can have several—here two—connection sections 34, each of which can be designed as a contact lug, for example.

Between each two adjacent contact bodies extends an at least a part of this contact body 3, preferably the terminal body 30, laterally separating insulation.

wall 4 in such a way as to protrude with a projection portion 40 on a side of the plane X facing away from the contact bodies 3 . These protruding sections 40 can be clearly seen in FIGS. 6 and 7, for example, and are provided here as wall sections or webs protruding on the underside. The protruding sections 40 therefore continue to form the correspondingly protruding section of the insulating wall 4 . As can also be seen from FIGS. 6 and 7, because of their configuration and positioning described above, these projection sections 40 are consequently designed in such a way that they lengthen an air and creepage distance of respectively adjacent contact bodies 3; compared to the same SMD terminals without corresponding projection sections 40.

As can be seen in particular from FIGS. 1, 3, 7 and 9, the insertion directions E of the contact bodies 3 are preferably all aligned parallel to one another. As can also be easily seen from FIGS. 1, 7 and 9, the insertion directions E preferably all extend parallel to the X plane.

As can be seen in particular from FIGS. 1, 3 and 6 to 9, the contact bodies 3 are arranged laterally in a row next to one another with respect to the insertion direction E and are preferably distributed parallel to the X plane.

The SMD terminal 2 can also have at least one further insulating wall 5, which laterally delimits at least one of the outer contact bodies 3 of the contact bodies 3 arranged in series on a side facing away from the contact body 3 of the insulating wall 4. In the exemplary embodiment shown here, the SMD terminal 2 has at least two further insulation walls 5, which laterally delimit at least both outer contact bodies 3 of the contact bodies 3 arranged in series on a side facing away from the respective contact body 3 of the insulation wall 4. The further insulating wall 5 also extends along at least part of the associated contact body 3 and preferably the associated clamping body 30, laterally delimiting it with respect to the insertion direction E in such a way that it protrudes with a further projection section 50 on a side of the plane X facing away from the contact body 3. These further projection sections 50 can be seen particularly clearly in FIG.

As can be seen from Figure 9, at least the further projection sections 50 and preferably the entire further insulating wall 5 can be narrower and here preferably half be as wide as the other insulating walls 4 or projection sections 40 are formed. An overall narrow or compact design can thus be achieved. For example, when two such SMD terminals 2 are combined to be arranged in a row next to each other, the laterally outer (further) projection sections 50 with the associated insulation walls 5 then form a width which corresponds to that of the projection sections 40 and the associated insulation walls 4 . Thus, the same or a desired clearance and creepage distance is automatically provided for all contact bodies 3, even when there are several SMD terminals 2 arranged next to one another—thus also covering SMD terminals 2. This enables a maximum compact design while maintaining defined or desired clearances and creepage distances.

At this point it should be noted that in addition to the SMD terminal 2 shown here with a plurality of contact bodies 3, it is also conceivable to provide an SMD terminal 2 in its simplest embodiment, which has only one contact body 3. This then also has a clamping body 30 with a clamping point K for fastening an electrical conductor in an insertion direction E. Likewise, the contact body 3 then correspondingly has a planar connection area 31 extending in a plane X for surface mounting of the SMD terminal 2 on a printed circuit board L. This simple form of an SMD terminal 2 then also has an insulating wall 4, which extends laterally along at least part of the contact body 3, preferably the terminal body 30, with respect to the insertion direction E in such a way that it is on a side of the plane facing away from the contact body 3 X with a corresponding projection portion 40 to protrude. Arranging several of these simple

If SMD terminals 2 are attached next to each other, each brings its own insulating wall to the then adjacent SMD terminal 2, so that a corresponding clearance and creepage distance according to the design of the projection sections 40 is provided between all contact bodies 3 then arranged next to one another in a row.

Even with the simple embodiment of the SMD terminal 2, it is conceivable that it also has a further insulation wall 5, which laterally delimits the contact body 3 on a side facing away from the contact body 3 of the insulation wall 4, with the further insulation wall 5 also along at least a part of the contact body 3, preferably the clamping body 30, with respect to the insertion direction E extends laterally delimiting in such a way as to protrude with a further projection section 50 on a side of the plane X facing away from the contact body 3.

In contrast to the variant with several contact bodies 3 per SMD terminal 2, the simple design of the SMD terminal 2 can offer a particularly high level of flexibility with regard to the composition and in particular the number of poles to be used. In contrast, the SMD terminal 2 with multiple contact bodies 3 offers the advantage of improved handling.

The insulating walls 4, 5 (including their projection sections 40, 50) are preferably aligned parallel to one another, as can be clearly seen from FIGS. 1, 7 and 9, for example. This ensures a particularly compact design with reliable isolating delimitation of the adjacent contact bodies 3 from one another.

The insulating wall 4, preferably also the further insulating wall 5, can preferably extend in such a way that it extends along at least that part of the contact body 3 which extends transversely to the insertion direction E and parallel to the plane X furthest laterally outwards; therefore therefore the adjacent insulating wall 4, 5 comes closest or the adjacent contact body 3 is closest. In this respect, the insulating wall 4, 5 can be provided in a particularly favorable position for air and creepage distance extension.

As can be seen in particular from FIGS. 6 and 8, the insulating walls 4, preferably also the further insulating walls 5, can extend in the insertion direction E along the entire clamping body 30 or contact body 3 adjacent to them. These can preferably protrude over the clamping body 30 (as can be seen in FIGS. 6 and 8) and more preferably even over the entire contact body 3 with respect to the plug-in direction E in and/or counter to the plug-in direction E. Thus, depending on the design of the contact body 3, the clearance and creepage distance can be set as desired.

As can be seen in particular from FIGS. 1 to 4 and 6 to 9, the SMD terminal 2 can also have an insulating housing 6, in which the contact body or bodies 3 are at least partially accommodated. To enable surface mounting, at least the connection areas 31 are provided or exposed here from the insulating housing 6 pointing outwards. In a particularly preferred embodiment, the insulating wall 4 and also the further insulating wall 5, if present, are formed integrally with the insulating housing 6. This facilitates in particular the production of a corresponding insulating housing 6. The insulating housing 6 can be produced, for example, as a (one-piece) injection-molded part. The insulating housing 6 preferably has a conductor insertion channel 60, which here runs in the plug-in direction E toward the terminal point K.

As already stated in the introduction, the figures also show an SMD terminal arrangement 1. This is shown in FIGS. The SMD terminal arrangement 1 has at least one of the SMD terminals 2 according to the invention. In the exemplary embodiment shown here in FIGS. 1 to 4, two SMD terminals 2 are provided here in accordance with the exemplary embodiment in FIGS.

[0052] In addition, the SMD terminal arrangement 1 also has a printed circuit board L. FIG. The printed circuit board L in turn has a connection point A corresponding to the connection area 31 of the SMD terminal 2 or to the connection areas 31 of the SMD terminal 2.

ponding connection points A, via which the SMD terminal(s) 2 are connected to the printed circuit board L in surface mounting. The printed circuit board L has a recess Z for each projection section 40, 50, as can be seen by way of example in FIG. 5 and also in FIG. The associated projection section 40, 50 protrudes into these recesses Z, as can be seen in particular from the perspective bottom view of the SMD terminal arrangement 1 according to FIG. As can be clearly seen here, the central recess Z between the two SMD terminals 2 is open; ie not occupied by a projection section 40, 50. This is due to the fact that the SMD terminal 2 used here only has an insulating wall 4 between the terminal bodies 30, but not on the outside of the side of the SMD terminal 2, as is the case in the exemplary embodiment in FIGS. In this respect, a greater distance may have to be selected between these adjacent SMD terminals 2 than is the case between the contact bodies 3 of the SMD terminal 2 according to the invention in order to meet a corresponding clearance and creepage distance requirement. However, in order to also be able to install these SMD terminals 2 more compactly with neighboring SMD terminals, an SMD terminal 2 shown here in FIGS. 8 and 9 can be used, for example. When they are arranged adjacent to each other, the respective outer and mutually facing further insulation walls 5 together with their protruding sections 50 then rest against one another and thus form an intermediate combined clearance and creepage distance-extending measure. In order to then arrange these SMD terminals 2 next to one another as compactly as possible, as shown in Figures 8 and 9, the further outer insulation walls 5 together with the projection sections 50 have a smaller width B5 than the width B4 of the other insulation walls 4 and their projection sections 40 . In the case of two SMD terminals 2 arranged adjacent to one another and lying against one another via the adjacent further insulation walls 5 together with the corresponding projection sections 50, this results in a comparable width and thus clearance and creepage distance length in the area of the combined further insulation walls 5, as is the case between the two with the insulation wall 4 separate contact bodies 3 of each SMD terminal 2 results.

As can also be seen from FIGS. 4 and 5, the recesses Z can be designed as through openings. The protruding section or sections 40, 50 can then at least partially protrude into the respective through-opening or, alternatively, can also completely protrude through the printed circuit board L via the respective through-opening. Thus, depending on the configuration of the corresponding projection sections 40, 50, any clearance and creepage distance extension can be achieved, or SMD terminals 2 with projection sections 40, 50 projecting to different extents can be installed with the corresponding printed circuit board L.

The present invention is not limited by the exemplary embodiments described above, insofar as it is covered by the subject matter of the following claims. In particular, the number of insulating walls 4, 5 and associated projection sections 40, 50 can vary and, for example, amount to (N-1), (N), or also (N+1) through a number of poles N embodied by the contact body 3. The invention does not limit the number of poles of the SMD terminals 2 .

Claims (10)

Expectations 1. SMD terminal (2), in particular SMD connection or SMD connection terminal, having a contact body (3) and an insulating wall (4), characterized in that the contact body (3) has: * a clamping body (30) with a terminal point (K) for fastening an electrical conductor in a plug-in direction (E), and * a flat connection area (31) extending in a plane (X) for surface mounting the SMD terminal (2) on a printed circuit board (L), and that the insulating wall (4) extends laterally along at least a part of the contact body (3) with respect to the insertion direction (E) in such a way that it protrudes with a projection section (40) on a side of the plane (X) facing away from the contact body (3). . 2, SMD terminal (2) according to claim 1, characterized in that the SMD terminal (2) also has a further insulating wall (5) which the contact body (3) on one with respect to the contact body (3) of the insulating wall (4 ) side facing away, the further insulating wall (5) also extending laterally along at least part of the contact body (3) with respect to the plug-in direction (E) in such a way that on a side of the plane (X) facing away from the contact body (3) projecting with a further projection portion (50). 3. SMD terminal (2), in particular SMD connection or SMD connection terminal, characterized in that the SMD terminal (2) has: at least two or more contact bodies (3), each with * a clamping body (30) with a Clamping point (K) for fastening an electrical conductor in a plug-in direction (E), * a flat connection area (31) extending in a plane (X) for surface mounting the SMD terminal (2) on a printed circuit board (L), whereby the connection areas (31) of all contact bodies (3) extend in the same plane (X), with an insulating wall (4) laterally separating at least part of the contact bodies (3) extending between two adjacent contact bodies (3) in such a way that on one of the contact bodies (3) to protrude on the opposite side of the plane (X) with a projection portion (40). 4. SMD terminal (2) according to claim 3, characterized in that the insertion directions (E) of the contact bodies (3) are aligned parallel to one another and preferably also parallel to the plane (X); and/or that the contact bodies (3) are arranged laterally in a row next to one another with respect to the insertion directions (E), preferably distributed parallel to the plane (X). 5. SMD terminal (2) according to claim 4, characterized in that that the SMD terminal (2) also has at least one further insulating wall (5) which has at least one or at least two further insulating walls (5) which at least both outer contact bodies (3) of the contact bodies (3) arranged in series on a the side facing away from the contact body (3) of the insulation wall (4), the further insulation wall (5) also extending laterally along at least a part of the associated contact body (3) with respect to the insertion direction (E) in such a way as to be on one of the contact body (3) opposite side of the plane (X) with a further projection portion (50) to protrude. 6. SMD terminal (2) according to claim 2 or 5, characterized in that at least the further projection sections (50) and preferably the entire further insulation wall (5) in a direction transverse to the insertion direction (E) of the associated contact body Seen pers (3), narrower than and preferably half as wide as the or one of the insulating walls (4) or their projection sections (40). 7. SMD terminal (2) according to any one of the preceding claims, characterized in that the insulating wall (4), preferably also the further insulating wall (5), extends such that it extends along at least part of the contact body (3). , which extends transversely to the direction of insertion (E) and parallel to the plane (X) furthest laterally outwards; and/or that the insulating wall (4), preferably also the further insulating wall (5), extends in the insertion direction (E) along the entire terminal body (30) or contact body (3) adjacent to it, preferably in relation to the insertion direction (E) in and / or counter to the insertion direction (E) over the terminal body (30) and more preferably the entire contact body (3) protrudes. 8. SMD terminal (2) according to one of the preceding claims, characterized in that each of the clamping bodies (30) has a contact frame (32) and a clamping spring (33) held therein for preferably tool-free and also preferably detachable receiving of a plug-in direction (E ) has introduced electrical conductor. 9. SMD terminal (2) according to any one of the preceding claims, characterized in that the SMD terminal (2) further comprises an insulating housing (6), in which the one or more contact bodies (3) are at least partially accommodated, preferably with the Insulating wall (4), further preferably the further insulating wall (5), is formed integrally with the insulating housing (6). 10. SMD terminal arrangement (1), characterized in that the SMD terminal arrangement (1) has: * at least one SMD terminal (2) according to one of the preceding claims, and * at least one printed circuit board (L) with the / the connection area (s) (31) of the SMD terminal (2) corresponding / n connection point (s), via which the SMD terminal (s) (2) are connected to the circuit board (L) in surface mounting, the circuit board (L) per projection section (40, 50) has a recess (Z) into which the respective protruding section (40, 50) protrudes, wherein the recess(es) (Z) is/are designed as through-opening(s), with the protruding section or sections (40 , 50) protrude at least partially into the respective through-opening or completely protrude through the circuit board (L) via the through-opening. 1 sheet of drawings