Simply put, in terms of shape, there are four main types of pot slices:
1. Circle metal dome (with a small stroke);
2. Four-leg metal dome (maximum stroke);
3. Triangleseries metal dome (with feet is also a commonly used button);
4. Oblong metal dome (relatively space saving);
5. Various shapes of metal dome can be customized according to needs, and in addition, irregular metal dome can also be customized
Advantages and disadvantages of each type of metal dome slices:
1. Circle metal dome (round metal domes, circle tactile dome) : It is a button with a relatively short itinerary, which has a good feel and no clear sound. Circular metal dome are generally used in conjunction with double-layer metal domes . Several types of shrapnel have a longer lifespan for circular metal dome ; The shape characteristics are also better compatible with the use of double-layer stickers, which effectively saves unnecessary space that cannot be replenished.
2.Triangleseries metal dome : Generally, there is only one contact point in the middle, with one contact point on each three sides. The purpose is to better contact the PCB gold finger, which has better conductivity but shorter lifespan compared to the edges and corners. Triangle pot chips are divided into two types: with or without legs. The triangular pot with legs is usually used in conjunction with the PCB board on products. The pot without legs can be used in conjunction with double-layer stickers on various products, and when used in conjunction with double-layer stickers, it can effectively improve the feel.
3. Waist shaped metal dome : generally used on single button products or products with separate buttons, generally used on products with small area and compact wiring, commonly used on soft board PCBs, which occupy relatively small space and have a relatively long lifespan.
4. Cross shaped metal dome : Cross shaped metal dome is a type of pot with a relatively large stroke, relatively heavy force, high force, and short lifespan. Customers often use gold plated spring slices with low resistance and strong conductivity, and there is a clear sound during operation. Can be used together with stickers on products. The use intensity is generally higher than other types of pan chips, and the travel distance is also greater than other pan chips. It is mainly used in access control equipment intercom building systems.
5. Other heterosexual metal dome may have a welded 8.5 * 8.5 with a hole in the middle, which is commonly used in the steering wheel of automobiles.
