The metal dome/snap dome is an important part of the switch. Metal/snap domes are mainly used in membrane switches, contact switches, PCB boards, FPC boards, medical equipment and other products. The metal/snap dome on the membrane button is located on the conductive part of the PCB. When pressed, the center point of the dome is concave and touches the circuit on the PCB to form a loop. The current passes through and the entire product can work normally. Dongchen is a professional custom metal/snap dome manufacturer & supplier, which can custom metal/snap domes that meet customer requirements according to the customer's requirements for resistance. Our metal/snap dome also has various surface treatments such as nickel plating, silver plating and gold plating.
Definition of metal snap dome
The metal dome (also commonly known as the snap dome) is made of ultra-thin (0.05mm-0.1mm thickness) and ultra-thick (generally higher hardness) stainless steel 301 or 304 materials. The metal dome is an important part of the switch.
The working principle of metal snap dome
The metal dome on the conductive film is located on the conductive part of the PCB. When pressed, the center point of the shrapnel contacts the PCB board to form a loop and the current flows. This is how the metal dome works.
Classification of metal snap dome
Generally, conventional metal snap domes can be divided into the round metal dome, cross-shaped metal dome, triangular metal dome, and oval metal dome according to their different shapes. The diameter ranges from 3mm to 30mm, and the strength ranges from 50g to 5600g. According to the surface electroplating treatment, it can be divided into gold plating, nickel plating, silver plating, bright surface and so on. There are two types of single-sided plating and double-sided plating.
Why Choose DongChen
DongChen is a professional custom metal/snap dome manufacturer & supplier in China, our production technology guarantees that even after the strict overload test, the continuous strength and good feel of the metal dome are maintained, and the dimensional tolerance is strictly controlled, and there is no thorn, thereby reducing the wear of the conductive layer. Reliable automatic shrapnel placement equipment greatly improves production capacity. The quality of our products is not only recognized in China but also praised globally.