In this week, we have developed a new type of circle metal dome, which increases the contact space of metal dome, enhances the working stability and decreases the making difficulty procedure of PCB or membrane switch.Â Â
For normal circleÂ metal domeÂ (with dimple), the diameter of dimple is usual less than 0.03mm (for Î¦5mm dome), and have only one ring. When you press the dome, the contact space is little narrow and small. So that it will require terrible exact location of switch contact on PCB or membrane switch, which increasing the difficult of making PCB or membrane switch. And sometimes, the dome maybe donâ€™t work smoothly if switch contact in PCB or membrane switch is not in right place.
Â normal circleÂ metal domeÂ
But for the new dome, the diameter of dimple is nearly 1.00mm (for Î¦5mm dome) and has two rings, which increases the contact space greatly, enhances the working stability of domes and decreases the making procedure of PCB or membrane switch.
Â The newÂ circleÂ metal domeÂ
We can check from belowingÂ pictures showing the difference between the normal dome and the new one.
Normal metal dome VS the New one (surface/top)
New metal dome VS the normal one (buttom)