As there are 2 kinds of metal domes(with or without dimple), many customers are confused. Here, Let me explain details about the metal domes with dimple today:
Metal Dome(W/O) Dimple(2)
Metal Dome(W/O) Dimple(3)
metal dome with dimple
First, the metal domes with dimple increases the travel;
Secondly, the metal domes with dimple has better click feeling when pressing;
Third, the metal domes with dimple has better dust-proof effect;
Now, are you clear about the difference of the two kinds of metal domes? Actually, which kind to use depends on your design.A dimple is used to reinforce or improve the dome contact with the PCB.
If you need more information, please feel free to contact us.
