What is a Dome-Switch Keyboard

Excellent HMI-Dome-Switch Keyboard.

In life, many customers should find that they will see a variety of HMIs in their lives. One of the most common HMIs is the Dome-Switch Keypad. When you press the key lightly, there will be a ticking sound and A product that fulfills a function. So why Dome-Switch Keypad is an excellent HMI, let Niceone-tech introduce Dome-Switch Keypad.

What is a Dome-Switch Keyboard?

Niceone-tech has designed a large number of Dome-Switch Keypads. Generally speaking, Dome-Switch Keypads use wiring, Metal Dome and fixed layers as the cornerstone of design. There are many choices of circuit materials such as polyester, flex copper circuit and PCB, while Metal Dome is usually selected from stainless steel, nickel-plated or gold-plated stainless steel. When using the Dome-Switch Keypad, the user only needs to touch the switch lightly. When pressed, either a crisp sound is heard, or indicators such as LEDs will light up. At the same time, various types of Dome-Switch Keypad will be obtained by changing different material structures and production methods.

Since they are all called Dome-Switch, the most important factor affecting their design is Dome. So what is the choice of Dome?

• Plating options for Dome: uncoated stainless steel, Nickel or Gold.

• Dome shape: Round, Oblong, Four legged and Triangle, whether the Metal Dome has dots or no dots, etc.

• Dome force: 120-500G range. If you choose a specific load, you need to order more than 10K, such as 700G.

• Other types of options: center offset Metal Dome for LED LGF membrane switch design. At the same time, the multi-contact Membrane Switch is to enhance the conduction capability of the product.

Dome-Switch Keypad design considerations?

1. Dome-Switch Keypad must first consider the product load because the load will affect the Tactile Feedback of the product. Unless there are special circumstances, most of the time the choice of Dome is between 320-400G. In order to better guarantee the product's Tactile Feedback. If Niceone-tech meets the customer's demand for Tactile Feedback during the redesign process, we will customize three or more Metal Dome designs when producing samples to achieve the best feel.

2. Choice of panel material: Most of the choices are between 0.125mm-0.2mm. If it is too thick, the hand feel will be abnormally poor. resulting in problems.

3. The more critical point is the vent hole of the dome switch keypad. If there is no internal venting, the air will be trapped under the Metal Dome and cannot escape, causing Tactile Feedback response problems, resulting in air retention problems.