Now there are many customers who don’t know much about metal domes when they buy them, they only know that the cheaper the better. But this is actually one of the biggest misunderstandings. When purchasing a metal dome, you should consider many aspects, from material selection and manufacturing precision to contact force, driving life and surface protection, and at the same time choose the most suitable metal according to the quality of the metal dome.

The metal dome is an important component used in membrane switches, PCB boards and other products, and plays an important role in conducting the circuit. When pressed, the circuit is turned on, and when it is released, it is automatically disconnected. If there is a problem with the metal dome, it can affect your product and even your company’s brand. So I would like to tell everyone to pay attention to the following points when choosing a suitable metal dome:

1. Dome life:

Now there are many domes whose service life does not meet the standard. The four legs only have 200,000 to 300,000 times. The price is relatively cheap, but the life of the dome we made can reach 500,000 to 1 million times. After the life test of our products, the metal dome The life of the top can reach 500,000 to 1 million times. The choice of material plays a key role in determining the long life and consistent performance of the metal dome.

2. The force of the metal dome:

The force of the metal dome is the most stringent requirement of foreign customers, that is to say, the force of each metal dome must be uniform, not one high and one low, and it must be controlled within a certain tolerance range (±30gf). The force applied to the metal dome determines the level of tactile feedback experienced by the user, while the actuation life represents the number of times the metal dome can be pressed before its performance begins to deteriorate. Our metal domes are manufactured to design domes that guarantee user experience and long-lasting performance.

3. Metal dome material:

Material selection is critical in determining the overall quality and performance of a metal dome. We offer metal dome materials that are durable, corrosion resistant, and capable of withstanding repeated actuation without losing their shape or function, allowing metal domes to avoid “dead bonds” in use. It is difficult to tell which one is better from the appearance of the material, we can only find better ones and more suitable products for customers through testing.

4. Appearance of the metal dome:

When choosing a metal dome, pay attention to whether there is dirt, scratches, grease, crushing, etc. on the appearance, and we will clean and inspect the appearance of the metal dome during production, and check the unqualified products to ensure Every metal dome that leaves our factory meets or exceeds customer expectations.

Best Technology is a company specializing in the production of metal domes and circuit boards. More than 80% of our products are exported to overseas markets. In recent years, we have also developed domestic customers. Our metal dome has a service life of 500,000 to 1 million times, and the force can be controlled within (±15gf). We base our customers on high quality, high service, fast delivery time and good price.

Metal domes, also known as tactile domes or snap domes, are small, dome-shaped components used in membrane switches, keypads, and other devices requiring tactile feedback. These domes are typically made of stainless steel due to its excellent mechanical properties and corrosion resistance. Among the different grades of stainless steel available, SUS 301 and SUS 304 are widely used for manufacturing metal domes.

Some of our customers are always curious about the differences between SUS 301 and SUS 304 of metal dome. And they will ask the raw material of our metal domes, why you do not use SUS 304? Can you use SUS 304 to make this metal dome? Today I will introduce the differences between two of them, hope this will helpful for you to select the most suitable material for specific applications.

(Raw material of metal dome)

Composition difference of SUS 301 & SUS 304

Actually, both of them belong to the Martensitic stainless steel, but they have a slight difference of their compositions. The main difference is that the content of Cr and other elements is different, so the performance is different.

In the current market, the material mainly used to produce metal domes is SUS 301 in the domestic, while what is used more is SUS 304 in Hongkong, and both are used in aboard. Besides, people will choose the most suitable for the factory processing technology, the ability of the material, the use of different technologies, so that it will achieve the desired best effect, such as lifetime, click feeling, etc. 

• SUS 304 (stainless steel): it is the most widely used stainless steel.

Because it contains Ni, it has better ability of corrosion-resistant and heat-resistant than Cr steel, and has low-temperature strength. Therefore, its mechanical properties are great, and its work hardening is very large. It will not be hardened after heating treatment, non-magnetic, with good strength and less elasticity. It is often used with a thickness of 0.4t ~ 1.0T. 

• SUS 301 (stainless steel): Cr (chromium) composition is lower than SUS

304. And the corrosion resistance is poor, but cold working can get a very high degree of tension and hardness. Because of its good elasticity, so at present, it is widely used in laptop to play a role of anti-EMI. Its most commonly used thickness ranges from 0.4T ~ 0.07T. 

The material properties between SUS 301 & SUS 304

Different composition means they have different properties and result in the different application and fields that they can be used in.

• SUS 301: Suitable for elastic use, high carbon content, high hardness, not easy to elastic fatigue, poor ductility, not easy to stretch.
• SUS 304: Not suitable for elastic use, low carbon content, low hardness (soft)

But these material properties are not applicable in all situations.

For example, when the hardness of the two materials is close or the same, which one should be chosen? Such as SUS301 3/4H and SUS 304 H?

In this case, we should combine all aspects to consider. Although their hardness is the same, when they are used in the elastic products, SUS 304 H is more likely to have an elastic fatigue, so SUS 301 3/4H is more suitable.

In addition, the thickness of the material also will affect the hardness tolerance (the thicker the material is, the greater the tolerance will be.)

Below are some properties comparisons between SUS 301 & SUS 304.

1.Hardness comparison:

2.Mechanical property of SUS 301 & SUS 304:

This is the end of this sharing, after reading this article, if you still have some questions about them, welcome to leave a message or call us +86-755-2909 1601, or email us sales@metal-domes.com at any time.

The metal dome array is a crucial component used in many electronic devices, particularly in membrane switch assemblies. It provides a tactile feedback mechanism for users when they press buttons or keys on a device. Within the metal dome array, one essential element is the air vent hole, which serves a vital function in ensuring good click feeling and durability of the dome array. Here let’s explore the significance of the air vent hole function and why it is necessary for optimal performance together.

• Understanding what an air vent hole is

May when you look at a dome array, it will be noticed that there is a small path/slot between metal domes, or the hole on the PET around the domes, which is called “vent hole” or “vent slot”. The vent slot is not inconspicuous on a dome array, but it is very important for the operation of the metal dome. It allows the passage of air, preventing air pressure build-up between the dome and the substrate, ensuring smooth and consistent actuation of the switch. Although this design may not be applicable for every product, it is desirable in almost all applications.

• The function of the air vent hole

Normally, the vent hole acts as a channel for air to escape, maintaining equalized pressure and avoiding potential issues such as sticking, poor response, or non-functional switches.

The mainly function of the air vent hole is to equalize the pressure between the metal dome and the substrate. When a user presses a metal dome, the air beneath it needs to escape to create a stable and reliable tactile response. The air vent hole enables the immediate release of the trapped air, allowing the dome to collapse and establish proper electrical contact. Without the vent hole, the dome may not function optimally, resulting in inconsistent or non-responsive keystrokes. So, when we press the snap dome, in order to prevent the air from being compressed underneath, we have to make a vent slot for dome switch.

• How to design the air vent hole properly?

Designing the air vent hole properly requires careful consideration of various factors. The size and shape of the vent hole should be tailored to the specific application, ensuring efficient air release without compromising structural integrity. The placement and quantity of vent holes also play a vital role in maintaining consistent performance. A thorough understanding of the application and the characteristics of the metal dome array is essential in determining the optimal design parameters for the air vent hole. Below are some factors to consider in air vent hole design: a. Size and shape:The size and shape of the air vent hole are crucial in achieving the desired performance. The diameter or dimensions of the vent hole should be carefully determined based on the air pressure requirements, trip force, and size of the metal dome. A well-designed vent hole should allow the swift release of air while maintaining the necessary structural integrity of the metal dome array. b. Placement and quantity:The strategic placement of the air vent hole is essential to ensure uniform pressure distribution and reliable actuation. The location of the vent hole should be in proximity to the metal dome, allowing for efficient air escape during operation. Depending on the size and layout of the array, multiple vent holes may be required to maintain consistent performance across the entire surface. c. Compatibility with the application:The design of the air vent hole should align with the specific application requirements. Factors such as the environmental conditions, sealing requirements, and protection against dust or liquids need to be considered. Customization options should be available to accommodate unique application demands and ensure optimal performance and longevity.

• The positions of the air vent hole

There are several ways to make the vent holes on the dome array, below are the three commonly placements of the vent hole in the industry:

The vent holes can be designed between the metal dome and the spacer

A small opening hole can be made on the top layer of the dome retainer

The hole can be made through the PCB board.

• Why choose Best Technology?

The air vent hole is vital for the dome array, so look for a supplier with extensive experience and expertise in manufacturing metal dome arrays is important as well. By means of rich experience in dome array manufacturing, Best Technology can dispatch out the dome arrays to you in 3 days once receive your official orders, meanwhile, we can provide you the COC report so that you can check whether the metal domes or dome arrays conform to your design. Contact us right now to get quotations!!!

In an ever-evolving world of technology, precision and reliability are paramount. It’s a groundbreaking solution that promises to redefine the user experience and improve the performance of countless electronic devices. Utilizing state-of-the-art technology for unrivaled tactile feedback, enhanced durability and seamless integration, making it a game-changer across industries.

The Evolution of the User Interface

Metal Dome sets new standards in precision and responsiveness. Gone are the days of shallow, unsatisfactory keystrokes or inconsistent touch controls. Metal Domes provide a tactile feel that replicates the satisfying click of a mechanical keyboard, revolutionizing user interaction on a variety of devices.

Unparalleled tactile feedback

Give users precise feedback when installing Metal Domes on your electronics, increasing their overall satisfaction. The unique design and composition of the dome ensures that every keystroke or touch input has an unmistakable tactile click, giving users confidence and a more immersive interaction with their device. Whether it’s a smartphone, game console, or medical device, Metal Dome takes the user experience to new heights.

Enhanced durability and longevity

Reliability is of paramount importance in the design and manufacture of electronic equipment. Metal Domes excel in this regard, with excellent durability and longevity. These rugged domes are built to last, ensuring consistent performance even under the harshest operating conditions. Their exceptional resilience guarantees longevity, reduces the need for frequent repairs or replacements, and ultimately minimizes costs for both the manufacturer and the end user.

Seamless integration across industries

Metal Domes have found their place in multiple industries, from automotive control panels and consumer electronics to industrial equipment and medical equipment, Metal Domes provide a versatile solution for any product that requires reliable and precise user input. Ease of integration and compatibility with various technologies make Metal Dome ideal for manufacturers looking to enhance their product offerings.

Metal Dome has become a breakthrough technology that has revolutionized user experience and performance across industries. With this technology, Best Technology allows more users to experience the tactile feedback and durability and seamless integration brought by Metal Dome, as the demand for precise and reliable tactile clicks continues to grow, making Metal Dome a core component one.

Discover the power of Triangular metal domes and boost your product performance

Innovation has been a topic that has been mentioned in many industries in recent years, but the innovation of products has always been troubled by designers. What kind of design is innovation? Designers and engineers are constantly looking for ways to improve the user experience. With the design and research of triangular metal domes, they have put a lot of effort into studying different types of metal domes. These small but powerful components are revolutionizing the design landscape, providing unmatched durability, responsiveness and performance for a wide range of applications. flexibility.

Metal domes, traditionally round or dome-shaped, have long been recognized across industries for their reliability and tactile feedback. However, with the advent of the triangular metal dome, a new era of product design has emerged, offering more versatility and improved performance.

By replacing the traditional circle with a triangular design, manufacturers can gain several significant advantages. The triangular shape provides more stability, preventing unwanted wobble or misalignment, resulting in a more consistent user experience. Additionally, unique angles and edges enable precise actuation and reduce contact resistance, ensuring an instant and reliable response to every press or touch. This enhanced responsiveness creates more engaging and satisfying user interactions, whether it’s buttons on a control panel, a keyboard on a device, or a touch-sensitive interface. Durability is another noteworthy aspect of triangular metal domes. Made from high-quality materials, these components are durable enough to withstand heavy use and extend product lifecycle.

Triangular metal domes are gaining huge traction in several industries including automotive, consumer electronics, medical devices, and more. Their compatibility with various product designs and their ability to enhance the user experience make them a popular solution.

With the introduction of customizable triangular metal dome solutions, increasing demand from such users, and a high focus on product performance, the purchase rate of triangular metal domes continues to soar.

While we are constantly innovating, we have also been paying attention to the user experience evaluation. User feedback is the result of our innovation, so the reason why the customizable triangular metal dome is popular is that we constantly adjust and solve it according to the user experience. Solutions, so that customer satisfaction is the main factor for the success of the product. Whether it’s smoother keystrokes, more responsive operation feedback, or a reliable keyboard, the benefits are obvious and far-reaching.

To explore the power of metal domes and unlock the potential of product designs, stay tuned to best technology website for the latest developments and insights. Embrace this cutting-edge technology and take your product to the next level, giving users an unrivaled experience they won’t forget. If you are interested in our triangular metal dome, you can send an email to: sales@metal-domes.com, and report your needs together. We will provide the best solution according to your product.

Dome arrays are always assembled with Printed Circuit Boards (PCBs) or flex circuits as tactile switches that provide reliable and responsive feedback to users in electronic devices. However, one common issue with metal dome arrays is that they can lift up or “pop” off the PCB after being placed, causing malfunction or failure of the switch. In this article, we will discuss the reasons behind this issue and some possible solutions.

(Metal dome array on PCB)

Understanding the Design of Metal Dome Arrays

Metal dome arrays consist of a sheet of metal domes, which are small metal discs with a raised center, that are mounted onto a PCB. The domes are usually made of stainless steel or nickel-plated phosphor bronze, and are designed to be compressed when a user applies force on them. This compression causes the dome to collapse and make contact with the conductive pad on the PCB underneath it, creating a connection and activating the switch. 

The metal domes are typically held in place by an adhesive tape or film that covers the conductive pads on the PCB. When pressure is applied on the dome, the adhesive tape stretches and allows the dome to compress. However, when the tape is not properly bonded or the dome is too large, it can lift up from the PCB, resulting in a malfunctioning switch.

And when the dome array is a double-layer structure, the thickness of upper mylar layer is about 0.05mm, the thickness of spacer layer is about 0.075mm, if the dome you used are high-height series such as triangle metal dome or four-leg metal dome (height always from 0.4~0.7mm), the space between metal dome and spacer is too big. Once the metal dome is close to the outline, it is easy to make this area of dome array tilt up.

(Double layer dome array structure)

 Causes of Metal Dome Arrays Lifting up

There are several reasons why metal dome arrays may lift up when placed on a PCB: 

1. Insufficient Bonding StrengthOne common reason for metal dome arrays lifting up is insufficient bonding strength between the adhesive tape and the PCB. This can occur if the tape is not properly applied or if the surface of the PCB is not clean. Inadequate pressure or temperature during the bonding process can also contribute to weak bonding. 

2. Size and Shape of Metal DomeThe size and shape of the metal dome can also affect its ability to stay in place. If the dome is too large or has a sharp edge, it may be more prone to lift up from the PCB. The shape of the dome can also impact its ability to compress and make contact with the conductive pad. 

3. Environmental FactorsEnvironmental factors, such as temperature and humidity, can also impact the bonding strength of the adhesive tape and the metal dome array. Extreme temperatures or humidity can cause the tape to weaken or lose its adhesion, leading to the dome lifting up from the PCB.

How to Prevent Metal Dome Arrays from Lifting up on PCBNow that we have discussed the reasons behind the lifting up of metal dome arrays on PCB, it’s important to know how to prevent this issue. Here we listing some effective solutions to prevent metal dome arrays from lifting up on PCB:

• Use proper adhesive tape

It’s essential to use the appropriate adhesive tape for attaching the metal dome array to the PCB. The adhesive tape should have high adhesive strength and should be compatible with the material of the metal dome array and PCB.

• Choose the right size of adhesive tape

The adhesive tape should be slightly larger than the size of the metal dome array to ensure proper adhesion. However, if the tape is too large, it may cause stress on the corners of the tape, leading to lifting up.

• Apply sufficient pressure

Ensure that sufficient pressure is applied during the assembly process to ensure proper bonding between the metal dome array and the PCB.

• Make spacer thicker

Make the space thicker can effectively solve the lift up problem, due to when the spacer thicker, then the space between spacer and metal dome is not too much.

• Control the assembly environment

The temperature and humidity of the assembly environment should be controlled to prevent the adhesive tape from becoming too dry or too moist, which may affect the adhesion strength. Our SMT work shop always control the room temperature around 25^oC +/-3^oC, and the humidity is 35%-70%, this is the most suitable temperature for assembly.

• Optimize the design

The design of the metal dome array and PCB can also affect the adhesion strength. By optimizing the design, the stress concentration on the corners can be minimized, thereby reducing the chances of lifting up. Below are some common FAQs about metal dome array assemble to PCB, hope this can help you to better understand and properly design dome array.

 1. Q: Can I use any adhesive tape for attaching metal dome arrays to PCB?

A: No, it’s important to use the appropriate adhesive tape with high adhesive strength and compatibility with the material of the metal dome array and PCB. 

2. Q: What is the ideal size of adhesive tape for attaching metal dome arrays to PCB?

A: The adhesive tape should be slightly larger than the size of the metal dome array to ensure proper adhesion. 

3. Q: What is the impact of temperature and humidity on the adhesion strength of metal dome arrays?

A: The adhesion strength of metal dome arrays can be affected by the temperature and humidity of the assembly environment, with excessive dryness or moisture leading to weaker adhesion. 

4. Q: Can the design of the metal dome array and PCB affect the adhesion strength?

A: Yes, by optimizing the design, stress concentration on the corners can be minimized, reducing the chances of lifting up. 

5. Q: What are the consequences of metal dome arrays lifting up on PCB?

A: The consequences of metal dome arrays lifting up on PCB include malfunctioning of electronic devices and decreased durability.

This is the end of the sharing, if you have any questions or solutions about the lift up problems, welcome to contact us at any time.

Our investment in industry-leading surface mount technology enables Best Technology to deliver precise, fast arrays of metal domes and eliminate double domes. Not only can we offer dome arrays as a single product, but we use this process in the construction of membrane switches. This enables Best Technology to provide faster turnaround times, it is cost effective and prevents line downtime.

What is a dome array?

The Metal Dome Array is a polyester film with an adhesive liner used as a carrier that can be easily peeled from a release liner and applied to a circuit board or as a layer in our membrane switch products. Proper treatment of metal domes is very important, see our dome treatment guidelines sheet.

Dome arrays are available in a variety of sizes and shapes to meet the needs of a variety of electronic applications. They can be customized using a range of materials, including different types of adhesives and graphic overlays. This enables manufacturers to create unique, tailor-made solutions for their products.

How does the dome array work?

The metal dome array piece sits over the contact points on the PCB, and when the metal dome is pressed, the center of the dome brings it into contact with the PCB and allows current to flow.

Dome arrays can be used in a wide range of applications including:

Cell Phones and Other Consumer Electronics

Computer keyboards and other input devices

Car steering wheel and central control display buttons

Handheld Medical Devices

Industrial equipment keyboard

Best Technology offers metal domes in various sizes to suit your requirements. We have the ability to custom cut shapes. Our engineering team is here to help you meet your specifications. Contact us today and we can build a prototype for you.

Four-leg metal dome is also called cross-shaped metal dome. At present, the life of the cross-shaped domes produced by Best Technology can reach 500,000 to 1,000,000 times. It is far superior to round dome in terms of lifespan and feel. Cross-shaped metal dome has been widely used in various high-end electronic product accessories such as single-sided and double-sided circuit boards, flexible circuits, membrane switches, and medical equipment.

The working principle of the four-legged metal dome is that the dome on the top of the dome is the main interface, and the four legs extending outward are the support. When the main interface is under the pressure of the operator, the dome at the center of the main interface touches the PAD on the line, and its After that, it forms a loop with the four feet, resulting in conduction. According to the needs of different levels and levels of the market, Best Technology also has the ability to design and develop various surface treatments (such as nickel plating, gold plating) and special requirements for this type of dome.

Four-legged metal dome is divided into metal dome with holes and metal dome without holes, so what is the difference between the two, and what impact will it bring during use?

The four-corner metal dome with a center hole is mainly used on switches that need to be illuminated from the back or the bottom. The light can shine through the hole in the center of the dome, so that the LED can be placed on the lower front of the circuit board instead of on the back of the PCB. The four-legged metal dome with a center hole can be installed on single-sided or double-sided PCB, flexible circuit and membrane switch panel, and the negative and positive poles can be designed under the dome on the same side of the circuit.

The four-leg dome without a central hole is often used in digital electronic equipment and can be used as a case, mainly in the field of keyboards. Like perforated keyboards, it feels better than round and oval domes, and has a longer life cycle than triangular domes. The four-legged metal dome without holes is cheaper than the four-legged metal dome with holes, but the light projection and air permeability are not as good as the four-legged metal dome with holes.

Best Technology can adjust the stroke force, rebound/return force, feel, stroke and height according to customer requirements. Provide customers with the most suitable products and the most satisfactory service; no matter how big or how much you need, we will do our best to produce. If you have metal dome needs, contact us now to learn more!

A metal dome array & sheet (Dome Array, Mobile keypad Metal Dome, Metal Snap Dome Sheet) is a kind of PET sheet that carries metal dome contacts. It is usually applied to FPCBs and PCBs to function as switches of mobile phones and electric home appliances. The dome array is the most cost-effective solution for a simple switch with a superior tactile interface between your equipment and the user. May someone want to make a plunger or actuator on the top layer of the metal dome array, why? What are the benefits if we add a plunger on the dome array? Today, we are sharing some information about this product, keep on reading to explore more about plunger dome array.

What is a Plunger Dome Array?

When a metal dome array was added an extra plunger on the top of Mylar we named it as “Plunger Dome Array”, “Dome Array with Plunger” or “UV Metal Dome Array”, sometimes some body also call it as “Dome Array with Actuator” because it is similar like one section of actuator of keypad.  In generally, the plunger we added is 0.8-3.2mm diameter and height of 0.10-0.40mm, both of two parameters can be adjusted according to customer’s requirements or specific applications. But what important is that the height and diameter of the plunger or actuator should be based on the diameter of the tactile dome. Below is the structure/ stack up of a plunger dome array.

(Stack up of Plunger Dome Array)

Why use Plunger Dome Array?

Plunger dome array is a special kind of dome array, one of the main reasons that use this kind of dome array is that it can greatly increase the click feeling of the overall product, so it is very suitable for applications those need high click feeling but don’t like big noise when pressing high force metal dome. Additionally, we listing some other benefits if we use plunger dome array as following:

(Plunger dome array)

• Increase height

Dome array with plunger can increase the total height of the whole product, so that if your design was finished and you found the keypad can’t touch the metal dome directly or firmly, then adding a plunger is ideal for your choice.

• Longevity

This kind of dome array has a long lifespan because we don’t need to press with a high force, so that make them a reliable solution for devices that require long-term use. This longevity ensures that devices using plunger dome arrays are cost-effective and have a long operational lifespan.

• Easy Integration

Plunger dome arrays are easy to integrate into electronic devices and require minimal space, making them ideal for use in devices with limited/narrow space or small contact diameter. At the same time, they are compatible with a wide range of circuit boards and are available in various sizes and shapes.

• Consistency

Besides, it also provides consistent actuation force, ensuring that the buttons and keypads have the same feel and response every time they are pressed. This feature is important in devices that require precise control, such as medical equipment or industrial machinery.

How to produce a good quality Plunger Dome Array?

With so many benefits to use plunger dome array, so how to control the manufacturing process to get a good quality product? There are some guidelines from best Technology’s rich experience that can help you in this way.

1. Ensuring the diameter of the plunger/UV point is only 1mm so that the defective rate is very low. If the diameter of the UV is larger than 1.0mm, the defective rate will be 20% to 30% higher than that of the 1mm one.

• Please be make sure there is no bubbles inside and around the UV point, otherwise, it will cause the poor performance of the whole product and the UV may be peeled off.
• Additionally, the UV point itself can’t be straight, it shows in a cone shape. Because when the UV plastic molding is curing, it needs to be pulled out of the mold, hence there will be a drawing angle.
• UV has a tolerance when put onto the spacer, we should notice this point and consider into production run.

This is the end of this sharing about Plunger Dome Array, if you are interested in this special product, warm welcome to contact our sales at sales@metal-domes.com right now to get your plunger product.

If you want to assemble a triangular metal dome, you are in the right place! Our high quality metal domes are ideal for constructing strong and durable domes of all shapes and sizes. Here are some tips and tricks for assembling a triangular metal dome:

The installation methods of metal dome can be roughly divided into three types. Different products have different assembly requirements for dome, so the design of dome is also very different.

Some customers will say that the triangular dome with legs should be soldered to the FPC/PCB board. But according to the principle of using the triangular metal dome, this is wrong. Because the triangular dome can perform the function of conducting the circuit on the PCB, when the metal dome is pressed down, the dome will extend to a certain extent around. When the two corners of the triangular dome are fixed, when the dome is pressed, the dome cannot extend to the surroundings, but because the force is increased, the life of the dome will be shortened, resulting in the dome not being able to perform its special performance normally. Therefore, the triangular metal dome does not support soldering on the circuit board.

So what is the correct installation method of the triangle metal dome with legs? It is often necessary to install the dome on the FPC/PCB board, so it is necessary to understand the assembly of the triangular metal dome.

1. Use a triangular dome with feet, insert it into the PCB board, and buckle the feet directly. This is the most commonly used method. However, this method also has disadvantages, that is, it is easy to shake during use, and manual operation will be relatively slow.

2. Directly use our commonly used transparent glue to stick the dome. Compared with the previous method, this method may save a lot of labor. Of course, there are also disadvantages. The adhesiveness of this ordinary transparent glue is not very good, it is easy to make the metal dome deviate, and the fixation of the transparent glue is not very good, so it will appear in the process of use.

3. Make metal dome conductive film. This method of making the dome into a conductive film is convenient for pasting. But the cost will be higher than the first two. But no matter in terms of durability or labor, it has advantages over the first two methods. This method is commonly used in mobile phone buttons, remote control buttons, etc.

From the above three assembly methods, you can choose the appropriate design according to your needs. You can also Contact us to obtain more product knowledge. If you have needs for metal dome, you can also contact us for purchase consultation.