Although miniature board-to-board connectors are typically less than 1 mm thick, they are also commonly used in tightly packaged applications. In order to solve potential packaging problems, designers need to consider the wiring on the PCB and the additional wires connected to the connector. As the spacing becomes smaller, the wires must be narrower. Also, keep in mind that some connectors, such as flexible cable connectors, provide the option to flip forward and backward. When designing a system, you need to consider these flipping methods. For example, if there is another component on the back, flipping the connector backwards may not be easy to access. Finally, designers need to be aware that surface mount devices sometimes cannot handle smaller components. In some cases, they need new vacuum nozzles to solve these problems.