الوصف

The metal dome arrays is a switch contact system . It is composed of a PET sheet containing a metal dome and plays an important tactile switch between the user and the instrument . 
The snap dome on the conductive film is located on the conductive part of the PCB (above the gold finger) . When pressed , the center point of the pot piece is concave and contacts the line of the PCB , thereby forming a loop and passing current to realize the switching function . 
The meta dome arrays can be attached to various circuit substrates , such as a hard PCB board , an FPC soft board , a PET flexible circuit , or the like . Metal shrapnel conductive films are commonly used in telecommunications equipment , industrial equipment , automotive systems , and household appliances . Compared to conventional mechanical switches , it is lighter in weight , thinner in size , and smaller in size , enabling smaller and thinner packages; durable , mechanically and electrically stable for rugged and high-performance applications . Can be used in combination with film panels , silicone s and light guides . 

Specifications:
Contact configuration: SPST Normally Open 
Switching voltage: 0 . 1 to *0 VDC
Switching capacity: 1 Watt
Switching current: 0 . **5 to **0 mA DC
Contact Resistance（stainless steel）: <**0 ohms 
Operation temperature rating: **5 ℃ to *5 ℃ 
Storage temperature rating: **5 ℃ to *5 ℃ 
Humidity: ***7% (no condensation)
Available diameters: 3~*0mm
Activation forces: from *0g to **0g (0 . 6N to 8 . 0N)