In the process of using the metal dome array, do the dust will get in? There will be a great relationship of the assembly method of metal domes.
For example, the triangle metal dome with the legs is usually fixed with the two legs on the PCB. During the process, dust easily enters the surface of the PAD through the two slots on the PCB, causing poor conduction.
If the design is not properly designed, it also may cause dust to enter. For example, the metal dome is too close to the edge, and the metal dome is easy to put the PET up. During the pressing process, the dust is easy to enter the surface on the PAD of PCB and cause poor conduction.
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Tags: dust, metal dome array