EFA(03)-240X240T0800 vs 3003310
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-240X240T0800.jpg)
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| Category | RFI and EMI - Shielding and Absorbing Materials | RFI and EMI - Shielding and Absorbing Materials |
| Manufacturer | KEMET | Würth Elektronik |
| Description | FLEX SUPP. SHEET 240X240X0.3 | TAPE COPPER 10MMX32.9M |
| Package | - | - |
| Series | EFA | WE-CF |
| Type | Absorbing Sheet | Shielding Tape |
| Operating Temperature | -40°C ~ 105°C | -25°C ~ 85°C |
| Shape | Square | - |
| Length | 9.449" (240.00mm) | 108.268' (33.00m) |
| Width | 9.449" (240.00mm) | 0.394" (10.00mm) |
| Thickness - Overall | 0.013" (0.33mm) | 0.003" (0.07mm) |
| Adhesive | Non-Conductive, Single Sided | Conductive, Single Sided |
| Material | Polymer Resin, Magnetic Powder | Copper Foil |
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1. What are RFI and EMI shielding materials?
RFI and EMI shielding materials are designed to block or reduce electromagnetic interference and radio frequency interference. These materials prevent unwanted signals from affecting electronic devices and systems.
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2. What are the typical applications of RFI and EMI shielding materials?
Consumer electronics: Protect circuits in phones, tablets, and laptops.
Automotive systems: Prevent interference in electric vehicles and sensors.
Medical devices: Shield sensitive equipment like MRI machines.
Military and aerospace: Ensure reliability in radar and communication systems. -
3. What is the role of gaskets and seals in EMI shielding?
Gaskets and seals ensure continuous contact between shielded components, preventing leaks in electromagnetic enclosures. Common materials include conductive elastomers and fabric-over-foam.
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4. What is the difference between near-field and far-field EMI, and how does it affect shielding?
Near-field EMI: Dominates at lower frequencies; requires materials with high magnetic permeability (e.g., Mu-metal).
Far-field EMI: Dominates at higher frequencies; relies on conductive materials to reflect or absorb interference.
