Reliability of membrane switch buttons

Publish Time: 2020-09-30     Origin: Site

Reliability of membrane switch buttons


Membrane switch buttons also called membrane switch keypad or membrane switch keyboard, both of these switches are touch switch or touch pad.

The service life of the membrane button technology should be greater than 1 million times. 

In practice, the circuit layer membrane changes under the operating pressure. 

The 0.1-0.3mm switch stroke determines that its deformation fluctuation is very small, far reaching To the fatigue limit of the film. 

However, if the description and skill standards of the film buttons are not strictly followed, the thickness of the isolation layer formed is unreasonable, and the air movement in the air guide groove is unreasonable, the deformation of the circuit layer film will be aggravated and the life of the film buttons will decrease. 

In addition, the life span of the membrane button also depends on the wear of the circuit contacts. 

A layer of carbon paste can be printed on the silver paste contacts to improve wear resistance and extend the life of the switch.

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