EMI SHIELDING
Protecting electronics from electromagnetic radiation with PRE-ELEC® electrically conductive plastics
Why EMI shielding?
Strong external electromagnetic interference (EMI) can cause harm in electronics by
- Jamming or distorting signals causing malfunction
- Sudden power outages or fluctuations causing malfunction, damage, and decreased life.
EMI shielding prevents electromagnetic radiation from entering electronic and electric equipment. When the target is covered with electrically conductive material, it can prevent external electrical and magnetic fields from entering or exiting the encapsulated space.
In the first picture, there’s no external field, and there’s no charge inside of the encapsulation.
In the second picture, there’s an external field. The external field causes negatively charged particles of the conductive materials to move against the field direction. This causes negative charge on the opposite side of the field, and if the material is suitable and the encapsulation is thick enough, there’s again no charge inside of the encapsulation.
Applications
- Electronics & sensitive devices
- Wires, cables, and their assembly covers
- Signal transmission
- Industrial equipment, such as automation systems and power supplies
- Automotive electronics, e.g., engine control units or EV charging stations
- Medical devices such as monitoring equipment
EMI shielding is needed, e.g., in electric vehicles: signal cables, power cable connectors, in-vehicle electronics, driver assistance systems, and around the batteries.
EMI SHIELDING BROCHURE
Advantages of electrically conductive plastics
Electrically conductive plastics are increasingly being used in electromagnetic interference (EMI) shielding due to their lightweight, corrosion-resistant, and versatile properties.
- Weight Reduction: Conductive plastics are significantly lighter than metals, which is beneficial for applications where weight is a critical factor.
- Corrosion Resistance: Unlike metals, conductive plastics do not corrode, which enhances their longevity and reliability.
- Design Flexibility: Conductive plastics offer greater flexibility in design and manufacturing, enabling more innovative and complex shapes.