Medical equipment rubber keyboard silicone keypad with conductive metal pill


Medical equipment rubber keyboard silicone keypad with conductive metal pill



When designing the tactility into the rubber silicone keypad, it is necessary to add a carbon or metal (gold) pill in the actuator area 

at the base of the switch center which makes contact with a PCB or flexible circuit. When depressing a key, the webbing will deform producing a tactile response. 

When pressure is removed from the switch the webbing returns to its neutral position with positive feedback. 

The tactile response and travel of a key can be designed to create a myriad of feels and tactile ratio’s by changing the web design and/or the hardness of the silicone material. 

The force to actuate a key can be as high as 500g depending on key size and shape. 


Metal pill has better conductivity than carbon pill. Its general conductive resistance is less than 50 ohms,which can be as low as 10 ohms.


Silicone keypad with conductive metal pill is used to support extremely for keypads applied to electronical appliances and medical/health care products.

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