Three points to be attention for using triangle metal domes with legs

December 11th, 2019

We have the triangle metal dome with legs is divided into three items: short legs 0.8mm, middle legs 1.5mm, long legs 3.0mm. Choose the suitable legs based on the thickness of your PCB board.

  1. Insert the legs into the hole of the circuit board first. Generally, the legs length should be longer than the thickness of the circuit board.
  2. Bend the legs on the back of the circuit board to fix it, or paste a little transparent glue on it.
  3. The triangle metal dome with legs is generally suitable for toys, or high force products.

If you need to know more about metal domes, please feel free to contact us.We are the leading manufacturer in China.

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Do the dust will get in the metal dome array during use?

November 22nd, 2018

In the process of using the metal dome array, do the dust will get in? There will be a great relationship of the assembly method of metal domes.

For example, the triangle metal dome with the legs is usually fixed with the two legs on the PCB. During the process, dust easily enters the surface of the PAD through the two slots on the PCB, causing poor conduction.

If the design is not properly designed, it also may cause dust to enter. For example, the metal dome is too close to the edge, and the metal dome is easy to put the PET up. During the pressing process, the dust is easy to enter the surface on the PAD of PCB and cause poor conduction.

If you want to know more details for the design of the metal dome array, please contact with us.

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Metal dome venting design

May 31st, 2017

It is very improtant is the metal dome with venting, as it will affect the click feeling.How to design the venting of metal dome? There are three ways as below:

1. Open one line venting between the two metal domes;
2. Drill a hole on the top of Mylar;
3. Design the curved venting around the metal domes.

The first of above three methods are more commonly used, it’s very convenient and quick way. If you also need to know more about the metal dome, please feel free to contact us.

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How to increase the click feeling of metal dome?

March 29th, 2017

The click feeling of metal dome is the most improtance factor of entire product using effect, but how to increase the click feeling, let’s take a look at the following.
1, Use high height of the metal domes, such as the four-leg metal dome, the circle metal dome with side dimples, the click feeling is better than others;
2, Adjust the click feeling value of metal dome, Value = (force – reforce) / force, the higher value, the better feeling, but it generally can not exceed 70%, too high will affect the metal dome life;
3, UV Plunger Metal Dome Array design;
4, The actuators of Silicone can not make too large, too large will reduce the click feeling;
5, The assembly process, to make sure the metal domes in the center. Bcause in the middle of the dome array is the best feeling.

If you need more information about the metal dome, please contact with us.

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