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                                                                                    What Are Metal Domes  in membrane switch?

Metal domes are a type of tactile switch. Constructed with stainless steel, they provide tactile feedback when a switch is pressed. When integrated into membrane switches, they create tactile membrane switches.  When applied to a circuit board, these create a tactile feel and can be used to replace board mounted switches.

Contrary to the name, metal domes are not necessarily circular—though the circular configuration is perhaps the most common. At General Label, we offer several types of metal domes, including:

·         Circular

·         4 Legs

·         Triangular

·         Oblong

We also offer custom-built metal domes to fit the exact specifications of your product—our manufacturing facility can custom-cut almost any shape and size. 

What Is a Metal Dome Array?

A metal dome array is just what the name implies—several metal domes lined up together in an array on a polyester film. This polyester film (though PET and other plastics are sometimes used) is lined with adhesive. The adhesive backing can be removed and applied directly onto a circuit board (often a printed circuit board, or PCB).

Metal dome arrays are used in many of our membrane switches—tactile membrane switches provide a number of advantages, and metal domes are the best way to incorporate tactility into your switches.

How does a metal dome array work?

we integrate metal dome arrays into membrane switches, a type of user interface. The metal dome arrays are positioned over contact points on a flex circuit or circuit board—when a dome is pressed, it makes contact with the  flex circuit or circuit board, completing the circuit.

The main advantage of metal dome arrays is the tactile feedback they offer—while membrane switches can connect and break circuits without metal domes, these domes are the most durable way to provide valuable tactile feedback to users.