Rubber keypad or membrane switch?

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

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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