About EMI Filters / EMI Suppression

EMI Filters / EMI Suppression

EMI Filters, or Electromagnetic Interference (EMI) Filters, are devices designed to filter out high-frequency interference in order to reduce Electromagnetic interference (EMI). This type of filter is made up of components that reduce EMI or noise at a given frequency range. Common components of an EMI filter include capacitors, inductors, and ferrites. These components work together to form an LC circuit which will dampen the high frequency signals that cause the EMI. However, the effectiveness of an EMI Filter will depend on the implementation and design of the filter, as well as the type and strength of interference that is present. It is important to note that EMI Filters can only provide limited attenuation, meaning that the amount of interference or noise that is reduced will not always be sufficient for a given application. Careful design and implementation is required in order to ensure that the EMI Filter is sufficiently shielding the system from EMI sources.
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Hot 2761002112


Ferrite Beads 61 BEAD ON LEAD Z=142 OHM@250MHz
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Fair-Rite Availability : 358
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USD 0.0367

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NL12KTC181


Inductor: wire; SMD; 1812; 180uH; 120mA; 7.5O; ftest:0.796MHz; Q:20
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Viking Availability : 358
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USD 0.1094

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RRC-14-7-28-M


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ESSENTRA Availability : 357
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Ferrite Beads EMI/RFI Suppressor Wound Bead ThruHole
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API Delevan Availability : 355
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USD 0.8117

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XRFS20.5*3.5*15-0.8


- Accessories - Inductors/Transformers ROHS
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MaxLinear Availability : 355
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USD 0.3606

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28R2000-200


Laird Technologies Ferrite Cable Cores 252ohms 100MHz 40.6mm Inside Slot
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Laird Connectivity Availability : 354
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USD 2.2458

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100mΩ 19Ω@100MHz 0402 Ferrite Beads ROHS
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Fenghua Advanced Availability : 353
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USD 0.0023

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±25% 32O@100MHz 0603 Ferrite Beads ROHS
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Sunlord Availability : 353
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USD 0.004

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30m 25% 680@100MHz 1812 Ferrite Beads ROHS
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Tai-Tech Availability : 353
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PSDB1004NT1R5


Inductor: wire; SMD; 1.5uH; 10A; 8mO; 10.3x10.4x4mm; ±20%; -40÷125°C
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Viking Availability : 353
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USD 0.2705

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PSDB1005NT331


Inductor: wire; SMD; 330uH; 600mA; 812mO; 10.3x10.4x5mm; ±20%
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Viking Availability : 353
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USD 0.2876

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Hot 2643626302


Ferrite Cable Cores 43 Round Cable Core 96OHM/100MHZ; 300MHZ
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Fair-Rite Availability : 353
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USD 0.4386

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ESD-R-12N-H


Ferrite Toroids / Ferrite Rings 15x5x9mm 300MHz Ni-Zn 120C
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Kemet Availability : 353
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USD 0.5578

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MS293-10F


EMI Gaskets, Sheets, Absorbers & Shielding 29.3 x 25.3 x 6.4mm Two-piece Drawn-Seamless RF Shield/EMI Shield FRAME
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Masach Availability : 353
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USD 0.7739

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HCI1335-2R2


Inductor: wire; SMD; 2.2uH; Ioper:12A; 8.1mO; ±20%; Isat:18A
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Ferrocore Availability : 353
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USD 1.0787

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HCI1350-R19


Inductor: wire; SMD; 0.19uH; Ioper:34A; 0.5mO; ±30%; Isat:60A
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Ferrocore Availability : 353
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B64290L0048X065


Ferrite Cores & Accessories 34X20.5X12.5 T65 TOROID
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TDK Availability : 353
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SS28B2037


Ferrite Clamp On Cores Box Sleeve Snap Gray .350"ID 200@100
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HCB4532KF-900T90


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Tai-Tech Availability : 352
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FLF-120B


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Ferrocore Availability : 352
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