Membrane switch or rubber keypad?

We are also specialized in customized rubber keypads and membrane switches.

In some cases it is not clear which technology to prefer.
Simplified, the following differences can be determined:

FEATURES MEMBRANE SWITCH RUBBER KEYPAD
Method of construction flat embossed
Design no restriction of colours key design limited any shape and colour is possible
Surface hermetically sealed open
Operating force in different levels stepless (force/way curve can be defined)
Assembly simple, by self-adhesive back simple, housing and PCB have to be designed accordingly
Tooling charges relatively low relatively high
Series pricing Production > 500 pcs. quite cheap (up to medium quantities) very low for big quantities
Lifetime depending on the base material used at least 1 million opera-tions if optimal cons-truction is provided
 
 
   

Membrane switches show their “face” directly, but they are quite robust (the print is very resistant against scratches and the used foils are very resistant against most detergents), easy to assemble and to clean. The latter is particulary important for the use in medical applications. The surface of membrane switches cover easily IP 65.
Rubber keypads cannot always be recognized as such, since different coating processes are preventing the typical rubber-feeling of former times. They feel more like plastic caps. Abrasion resistance of the print is achievable. The rubber can be manufactured in all colours, including metallic-effects. It can adapt to spherically bent surfaces and can be designed for LED backlight. Also filigrane negative inscriptions are possible by means of special printing procedures or laser technology.
Stroke and operating force can be adjusted at a wide range. Multiple switching-functions are also possible. Solid tactile feeling can be achieved by gluing foils to the bottom side and with special contact pill material higher currents are attainable by smaller crossover resistances.

   
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