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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NLV08JT820


Inductor: wire; SMD; 1008; 82uH; 66mA; 19O; ±5%; ftest:2.52MHz; Q:20
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Viking Availability : 2201
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USD 0.0719

Multiples of: 10

28B0616-000


Ferrite Cable Cores 310ohms 100MHz 7mm Inside Dia.
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Laird Connectivity Availability : 2201
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USD 0.6344

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FLF-102B


Ferrite: two-piece; on round cable; Ø:9.5mm; 144O; A:21.5mm
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Ferrocore Availability : 2201
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USD 1.3132

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B64290A0038X038


Ferrite Cores & Accessories T10/6/4-T38 TOROID
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TDK Availability : 2200
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USD 0.234

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74270031


Ferrite Cable Cores WE-AFB Axial Ferrite 25MHz 163ohm
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Wurth Availability : 2198
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USD 0.5676

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B66413G0000X608


Ferrite Cores & Accessories EFD15x8x5 PC200 370 +30 -20%
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TDK Availability : 2196
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USD 0.4099

Multiples of: 1

28R1103-000


Ferrite Cable Cores 230ohms 100MHz 23mm Inside Slot
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Laird Connectivity Availability : 2195
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USD 0.6796

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BMI-S-204-F


EMI Gaskets Sheets Absorbers & Shielding SBSFRAMTnR 6.00x32.00x32.00MM
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Laird Performance Materials Availability : 2195
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USD 1.5558

Multiples of: 1

HPZ1608U601-R50TF


350mO ±25% 600O@100MHz 0603 Ferrite Beads ROHS
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Sunlord Availability : 2194
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USD 0.007

Multiples of: 20

Hot BLM18AG471WH1D


EMI Filter Beads, Chips & Arrays 0603 470ohm 200mA DCR 0.20ohm
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Murata Availability : 2193
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USD 0.0809

Multiples of: 1

DL16-100


Inductor: wire; SMD; 100uH; Ioper:0.3A; 1.27O; Isat:0.31A; B:4.45mm
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Ferrocore Availability : 2190
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USD 0.3471

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BBUP00201209221Y00


40mΩ ±25% 220Ω@100MHz 0805 Ferrite Beads ROHS
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Chilisin Availability : 2186
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USD 0.019

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2643800502


Ferrite Cable Cores 43 Round Cable Core Z= 82 OHM @100MHz
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Fair-Rite Availability : 2186
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USD 0.5968

Multiples of: 1

0199016051


EMI Kits Clip Flat 16.70x15.90x15.90MM
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Fair-Rite Availability : 2186
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USD 0.6151

Multiples of: 1

CBM201209U100T


10O@100MHz 0805 Ferrite Beads ROHS
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Fenghua Advanced Availability : 2182
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USD 0.0051

Multiples of: 100

PBY201209T-700Y-N


Ferrite Beads Multi-Layer 70Ohm 25% 100MHz 3A 0.04Ohm DCR 0805 T/R
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Chilisin Availability : 2182
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USD 0.0067

Multiples of: 50

NL12KTC330


Inductor: wire; SMD; 1812; 33uH; 300mA; 1.4O; ftest:2.52MHz; Q:10
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Viking Availability : 2182
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USD 0.1141

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Hot 2675665702


Ferrite Cable Cores 75 Round Cable Core Imp 22 Ohms @ 200KHz
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Fair-Rite Availability : 2182
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USD 0.9056

Multiples of: 1

Z0402C680CSMST


Kemet EMI Filter Beads, Chips & Arrays 68ohms 400mA
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Kemet Availability : 2177
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USD 0.0287

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MEM2012V181RT001


EMI Filter Circuits 2mm x 1.25mm x 0.85mm, -40 to +85 C, 20dB (300MHz to2000MHz), 100mA
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TDK Availability : 2177
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USD 0.2299

Multiples of: 1

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