A metal dome sheet is a kind of PET sheet that carries metal dome contacts. It is applied to PCBs to function as switches of mobile phones and electric home appliances. Compared to the membrane polyester switch which was formerly used, it gives good click-feeling. It also gives much longer lasting life span compared to poly dome sheets. It also takes place of down going productivity of tact switches with its potential productivity.

Metal dome contacts on the sheet are positioned over the contact point of PCBs. When a dome is pressed, the center of it contacts to the PCB and let the electric current flow through. This is how metal dome sheets work.

It is possible to manufacture metal dome sheets with various size and weight to meet customers' request.

Metal dome sheet is divided into 2 types according to its manufacturing application. One is Roll Type which is designed for automatic assembly line and the other is Sheet Type designed for manual assembly line.

Also, it is divided into 2 types according to the attaching application. One is PCB Type and the other is Keypad Type. The PCB type is attached on the PCBs, and the Keypad Type is attached under the keypads. And of course it's possible to be developed into various types followed by customers' requests.