What is EMI Shielding Material & Its Importance

Electromagnetic interference (EMI) is a phenomenon where waves emitted from one device interfere with another nearby device, adversely affecting its functionality. In extreme cases, EMI can cause devices to fail, lose data, or even damage.

To prevent these problems, EMI Shielding material is used. It is made to shield against electromagnetic waves and safeguard delicate parts in electricity systems. But first of all, let us explain what it is all about and why EMI shielding is so vital.

Let's explore the concept, applications, and innovations from leading industry experts like Konlida.

Understanding EMI Shielding

Electromagnetic interference shielding stops electromagnetic interference by designing devices that prevent or minimally transmit electromagnetic energy. These materials create a barrier or shield around the electronic devices to enable them to work optimally, having been protected from internal or external EMI.

For instance, when using your smartphone near a microwave or a Wi-Fi router, EMI shielding prevents the signals of each device from interfering with the other.

There is even more demand for EMI shielding today because industries have developed newer and smaller electronics products than before. Small form factor electronic devices, including the current generation phones, medical instruments, and car control systems, need adequate protection to perform as designed.

Applications of EMI Shielding

EMI shielding is widely used in different sectors because of the rising need for technology and connectivity. Below are some of the industries where EMI Shielding material plays a vital role:

1. Electronics

Electronics are one of the most susceptible to electromagnetic interference. Some examples of electronic products requiring EMI shielding materials include laptops, mobile phones, television sets, and video games and consoles. For instance, conductive foam provides very low contact resistance, is easily attachable with adhesive tapes, and is ideal for complex circuits.

2. Communications

These technologies include a tower of mobile phones, which uses antenna signals, routers of wireless connection, and satellites, which are key facilities used by communication companies in their businesses. Conductive fabric and polyimide films are used for EMI shielding to reduce interference from outside noise, thus facilitating clear and uninterrupted signaling.

3. Automotive Industry

Current automobiles have factors such as global positioning system GPS, intelligent sensors, and automatic control systems. These systems must function perfectly and withstand EM interference from other automobiles or equipment. Conductive rubber, an elastic and wear-resistant material, is suitable for automobile applications to shield important parts and provide high reliability.

4. Healthcare

Medical devices like MRI machines, patient monitors, and diagnostic tools depend on precision readings and accurate functioning. Interference can disrupt these devices, leading to errors. EMI shielding materials like polyimide films protect sensitive medical equipment against internal and external electromagnetic interference.

5. Military and Aerospace

Both military and aerospace applications must operate under extreme conditions while maintaining secure communication and reliable equipment performance. Advanced EMI shielding solutions like wave absorption materials are used here to protect against high-frequency interference and ensure equipment integrity.

Benefits of Using EMI Shielding Materials

EMI shielding materials offer several significant advantages, such as:

● Reliable Performance: By blocking interference, these materials ensure that electronic devices work consistently without disruptions.

● Extended Longevity: Effective shielding reduces wear and tear caused by electromagnetic exposure, which prolongs the life of devices.

● Improved Safety: EMI shielding protects devices and users by preventing malfunctions.

● Environmentally Friendly Options: Many shielding materials, like Konlida’s conductive foam, comply with RoHS standards, reducing harmful environmental impact.

● Customizability: Solutions like conductive rubber and polyimide films can be shaped and tailored to fit specific applications.

Why Choose Konlida for EMI Shielding Solutions?

Konlida's extensive expertise in EMI shielding materials has established them as a recognized leader in the industry. Committed to innovation, they continuously advance technological research to meet the demands of the modern era.

● Experience and Capacity: Konlida has been focusing on offering high-quality EMI shielding solutions since 2006, with an annual production capability of over 1 billion units.

● Custom Solutions: They specialize in tailoring materials like conductive foams, fabrics, and polyimide films to meet specific client requirements.

● High Standards: Exploiting its capability, Konlida has ensured its products conform to quality standards such as ISO9001 and IATF16949.

● Wide Applications: Health care, automotive industries, and communication sectors, among others, use their products, showing versatility.

Types of EMI Shielding Materials Offered by Konlida

Based on more than eighteen years of research, development, and manufacturing, Konlida has become a more trustworthy company in EMI shielding. They focus on superior EMI shielding materials for use in distinct sectors. Let's take a closer look at some of their key offerings:

1. Conductive Foam

Conductive foam has lightweight, flexible, and high surface conductivity characteristics. It is commonly used in electronics to protect some components, such as circuit boards and connectors. Some of the varieties of conductive foam that Konlida sells include nickel-plated, carbon-plated, and gold-plated, with shielding effectiveness that ranges from 60-90dB, and the frequency range of the conductive foam is between 30MHz-3GHz. It is also RoHS compliant, making it environmentally friendly.

2. Conductive Fabric

Conductive fabric is ideal for grounding and static electricity prevention. It is widely used in communication devices and automatic control systems and is available in multiple textures and forms, such as copper-nickel and aluminum foil-coated fabric. This fabric combines low surface resistance (≤0.03Ω) with effective shielding, providing more than 60 dB of effectiveness in the 10 MHz to 3 GHz range.

3. Polyimide Film

Konlida’s polyimide film is designed to offer exceptional durability and shielding effectiveness in high-temperature environments. With a shielding effectiveness greater than 75 dB and a temperature range of -40°C to 280°C, this film is perfect for aerospace, communication devices, and electronic tags.

4. Conductive Rubber

Conductive rubber is very soft and can offer EMI shielding of more than 80 dB. This is ideal for use in demanding applications where the part or product must be put through its paces, such as automotive, aerospace, weathering, etc. Similarly, it is perfect for use in outdoor applications where it is exposed to the elements. Konlida’s conductive rubber is available in customizable shapes like squares, triangles, and half-rounds.

5. Wave Absorption Materials

Wave absorption materials are designed to address high-frequency noise (1 GHz to 40 GHz) and provide thermal conductivity. These magnetic composite sheets are particularly useful in industries like automotive and military, where high-frequency EMI is a concern. Konlida offers ultra-thin and highly adhesive absorption sheets with excellent noise suppression capabilities.

Final Thoughts

EMI shielding is of utmost importance now more than ever, driven by the current wave of technological evolution and the expansion of electronic apparatus. Selecting an appropriate EMI Shielding material ensures that crucial components operate optimally and reliably. Industries have discovered innovative solutions from reputable suppliers like Konlida to enable cutting-edge technologies' seamless use and expansion without the risk of electromagnetic interference.

Take the first step towards enhanced performance and durability for your systems. Explore Konlida's range of high-performance EMI Shielding materials and discover solutions tailored to meet the unique needs of industries such as electronics, communication, healthcare, and beyond.

Visit Konlida's website now to learn more about how their expertise can help you achieve unparalleled results.