4 leg Metal Dome for Keypad

1. 4-leg is always for membrane keyboard, some for silicone keypad, or firstly stick to mylar layer(which is also called metal dome array for the completely part), then assemble to the silicone keypad by rear tape on the back.

2. Except 4-leg type metal dome, there are also some other types:

• circle or round--for silicone keypad
• triangle--for membrane keyboard, mounting diecrtly to PCB with its feets
• oblong--for silicone keypad

3. Normall there are some dimples on the center of the dome, to avoid the poor contact to PCB due to dust. There is 1 dimple, 3 dimples, 4 dimeples and 5 dimples.

4. Technology is developing fast, we also created new type dome, with a dimple on the top surface, to increase the click tactile feeling when pressing by the end user.