A new type of connector is called fuzz button connector. At present, there are not many applications of this type of connector, mainly for military applications, and most of them are imported. By checking some relevant information, the characteristics of this type of connector are sorted out.
       The fuzz button connector is mainly used for the vertical interconnection of MCM, which greatly shortens the path of signal transmission between chips, reduces the delay of signal transmission and improves the transmission rate. The fuzz button connector is mainly used in aerospace, military, medical, communication, semiconductor, automobile and other fields. It is the development trend of modern military and civil electronic communication equipment.
         Fuzz button? Is a kind of elastic connector, which can provide good DC and microwave connection when both ends are compressed. It is an ideal solution for the vertical interconnection of microwave modules and an important component for transmitting microwave signals in radar and electronic countermeasure equipment. The fuzz button connector is of solderless structure, which is easy to disassemble and maintain repeatedly.
         Fuzz button is a patented product of Luoyangs fuzz button interconnection technology. It is the company in China that has successfully developed and can produce fuzz buttons in batches. Its product performance ranks the leading position in China, and its key parameters have reached the level of foreign products. Fuzz button  is a special registered trademark of Luoyang fuzz button interconnection technology.
          Luoyang fuzz button interconnection technology can mass produce the very small φ 0.25x1mm micro nano fuzz button and φ 0.381x5.1mm wool button with a length to diameter ratio of 13 times.
          The electrical connection formed by fuzz button can include zero insertion force connection, board to board connection, and coaxial cable connection.
           With the development of electronic warfare technology, the performance requirements of electronic equipment have been greatly improved. Especially in the weapon platforms such as combat aircraft, UAV and smart bombs, the volume and quality requirements are getting smaller and smaller, but the demand for higher indicators and more functional equipment is increasing exponentially. This puts forward higher requirements for the miniaturization, lightweight, integration and reliability of electronic equipment technology.
           In the traditional electronic system equipment, the signal and power transmission between each functional module or unit are mainly connected by cable, surface mount welding or ball grid array welding. In the RF microwave system, due to the multiple signal channels and high-frequency transmission requirements, the high-frequency signal transmission between various functional modules almost completely depends on the rigid cable or super flexible cable and high-frequency connector, which makes its structural volume large and takes up more space size. When the RF micro wave interface reaches dozens or even hundreds, its interconnection relationship is complex, the cable is wound, and the system is small Modeling, maintenance and repair bring great difficulties. In addition, due to the particularity of the integrated packaging of microwave cable, its volume size and structure quality are larger than that of the ordinary surface mount welding or ball grid array welding packaging chip. When they are welded with the substrate in the traditional way, the reliability problems such as anti vibration and metal peeling coefficient of the substrate surface are difficult to solve effectively. Therefore, the above common connection mode is difficult to be applied in the new miniaturized and high functional density electronic equipment.
           Based on the mechanical elastic pressing, the fuzz button can realize the vertical interconnection without welding between the functional modules or between the functional modules and the system substrate, and has good RF and DC transmission performance.
           The structure is in the module package shell, which realizes the integration of module package and button connector.
           The fuzz button is composed of several tiny coaxial structures, which are connected by elastic compression of elastic probe. In order to realize its good and reliable transmission of electrical properties, there are higher requirements for the size design, processing accuracy and installation alignment error of each component of the button. Therefore, in the design of fuzz buttons, we need to focus on the effects of various errors, carry out tolerance analysis, and optimize the adjustment of characteristic impedance and structural size.