Do you know that the key switch for medical ESU pencil is snap domes? The answer is yes, but do you know the exactly of specification it is used? Let’s see below details.
We generally use triangle snap dome for ESU-pencil, with legs or without legs.
1. If you are using a triangle metal dome with legs, the pcb circuit board should has two holes, you can put his legs into the holes, bending the foot and then fixed.
2. If you are using a no-legs triangular metal dome, we can make it into dome array, it can also be firmly glued to the pcb board.
Commonly we use 6mm diameter and 8mm diameter. The main advantage of this type is high press force and good click feeling.
If you do not full understand, please feel free to contact our sales staff !!!