Metal Dome Array & Metal Dome Sheet Â --- Single Layer
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Metal dome array (dome array) is used in the early period of metal dome arrays industry. Metal dome contacts are attached under Mylar (one layer of adhesive PET film) . On the sheet, there is an air hole for each dome contact and it is essential for good click-feeling.
1) light & small
2) Nice handle & returned dome with breathe freely hole on metal dome.
3) Mainly used in cheap single layer PCB.