Metal Domes that Appliied to Membrane Switches

The combination membrane switch is a necessary behavior, because the membrane switch is composed of various layers of semi-finished products, including, the film circuit printed with silver paste, the membrane panel that is graphics overlay printed with ink using membrane plastic materials, and the need to tactile the keys. 

Metal domes, these combined together to form a membrane switch.

However, the metal domes that used in the membrane switches has certain requirements. 

For example, the size of the membrane switch used in large mechanical equipment may vary, but the metal shrapnel must be used. 

There are many types of metal domes. The shape is round and large. A large part of these feels are different, and the life span is also different. 

Of course, this is also related to the use range of the environment. 

However, the life of most metal domes can reach more than 1 million times.