Bent-Jumps - Connect PCBs With Multipins
To connect to PCBs with multipins, Bent-Jumps can be used, automated SMD - insertion machines can exactly place the Bent jump which is then reflow soldered.
In the construction of a Bent jump connection we recommend two PCBs with a separation milling of 2.4 mm which then allows for the Bent jump assembly.
With the separation of the PCBs and later the forming, the crease point is only on one side of Bent jump, a standard 90° bending is possible.
Bent Jumps Directly On The PCB Edge
Please note that the bending of the Bent jumps is directly on the PCB edge.
This provides a very narrow and space-saving connection. This is especially interesting, if space needs to be saved on the PCB in order to fit in its final housing.
Here the bending cycle in detail (lateral view):
The distinctive feature with our Bent-Jumps is that they allow for a compact construction.
We have optimized through experience the ideal pad size where a high tensil strength can be reached, nevertheless the solder position and contact fingers are still relatively molded small.
With such uses the space is often the biggest problem this is why these connectors are so popular, particularly as they are mounted on the PCB in a location where no components are namely on the board edge.
The following image provides you with a view of how far apart the two PCBs must be for a suitable Bent jump insertion:
Here we show you how the pads on the PCB should be constructed to obtain an optimum soldering.
We recommend you use these Footprints in the layout construction in particular the distance mass between the two PCBS.
(Please, fit the mass for the other number of poles in or we can provide you with a suitable drawing.)
Tensile Strength Test
To test the soldering stability of Bent-Jumps we have carried out tensile strength tests in our lab.
We have tested the assembled soldered Bent jumps connected to a PCB, bent the Bent jumper 90° and pulled to the break point which was then measured.
It requires no further explanation that a 10 pin Bent jump has higher tensile strength than a 4 pin one.
In the following table you can review the values we have measured. A 35 μm Copper based PCB with HAL (lead Pree Hot air leveling) was used as the base material.