We know there are different assembly methods for metal dome, such as metal dome with legs can insert in PCB’s pin hole to fix, similar like below picture. Most of the dome switch with legs are triangle type. It has several leg specifiication: 0.8*0.8mm, 0.8*1.5mm and 0.8*3.0mm. Usually we can choose the metal dome with the appropriate leg length according to the PCB’S thickness. If you want know further information about how to assemble it please refer to another article “How to assembly triangle series metal dome on PCB”.

Another method is making metal dome with adhesive tape to be dome array and stick on PCB to conduct with it, we also call it as dome sheet, peel dome. The advantage of making dome array is that its assembly efficiency will be faster than insert one by one, especially when the number of metal domes on a dome array is relatively large, and one dome array can contain different types metal dome but only assemble one time.

Beside those two methods, some clients chose to weld metal dome on PCB board directly, normally we don’t suggest to do it so . Because the metal dome has a little arc with a certain ductility, when we pressing it the metal dome will extend around, if welding it on PCB board, the metal dome can’t extend around when you pressing it, as we pressing for a long time it will easily cause the metal dome to be concave, so it is not recommended to weld metal dome directly.

Best Technology, as the top 5 metal dome & dome array manufacturer in China, we have more than 15 years experience in snap dome, metal dome sheet and tactile membrane switch industrial, our metal dome is equivalent with Snaptron & Nicomatic metal dome,we can always provide you the best solution for your dome switch project. If you have any doubt or inquiry about the snap dome please kindly call us or email us at any time.

As we already know there are two methods to manufacture metal dome array: laser-cutting or tooling produce . Usually when the dome sheet exceed than 150mm we will suggest to open a tooling to produce it. Is this the only way to make a snap dome array which dimension exceed 150mm? The answer is not.

Actually, for such super large size metal dome array (usually this super-sized dome array is more used on the keyboards), we have another method to do it beside tooling produce, especially when your demand quantity is not very large, consider from the perspective of cost saving we will suggest to make such dome sheet(also name dome cover) by laser-cutting. The precondition is we need dividing this super large dome array into several parts according the layout of metaldome, then we can produce those dome sheets by laser-cutting as supposed.

Take an example for above PCB boards, the dimension is 212*161mm, except tooling produce we take another method as laser-cutting, we divided it into 3 parts accoridng the distribution of the snap domes( see the white frame line area in the PCB board), then those 3 dome arrays won’t exceed the range of laser machine, thus its very easy to produce the metal dome panel and save much cost as well.

Although the assembly efficiency maybe a little bit slower than the whole sheet dome array assembly, but its does not matter, because we marked a white frame line on the circuit board, and we can also use it for alignment when assemble metal dome array on the PCB board, its very quick as well. For the assembly of dome array please visit our blog “How to Assemble Adhesive Tape of Metal Dome? “.

Best Technology, as the top 5 metal dome & dome array manufacturer in China, we have more than 15 years experience in snap dome, metal dome sheet and tactile membrane switch industrial, our metal dome is equivalent with Snaptron & Nicomatic metal dome,we can always provide you the best solution for your dome switch project. If you have any doubt or inquiry about the snap dome please kindly call us or email us at any time.