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What is an EMI Filter?

An EMI filter, or electromagnetic interference filter, is an electronic passive device which is used in order

to suppress conducted interference that is present on a signal or power line. EMI filters can be used tosuppress interference that is generated by the device or by other equipment in order make a device

more immune to electromagnetic interference signals present in the environment. Most EMI filtersconsist of components that suppress differential and common mode interference.

Types of EMI Filters

There are many different kinds of EMI filters. At uture Electronics we stock many of the most common

types categori!ed by type, case si!e " dimension, impedance, ma#imum $% resistance, capacitance andrated current. The parametric filters on our website can help refine your search results depending on the

required specifications.

The most common values for capacitance are &'' p, ()' p, & n, *.* n and ** n. +e also carry EMI

filters with capacitance up to *) . -ated current can have a range between & mA and &'' A, with the

most common EMI filters having a rated current of *'' mA, '' mA, *A or / A.

EMI Filters from Future Electronics

uture Electronics has a full EMI filter selection from several manufacturers that can be used to design

an -I EMI filter, $% EMI filter, A% EMI filter, phase EMI filter, Ethernet EMI filter, EMI air filter, EMI line

filter, EMI suppression filter, EMI power filter, EMI noise filter or any circuit that may require an EMI filter.

0imply choose from the EMI filter technical attributes below and your search results will quickly be

narrowed in order to match your specific EMI filter application needs.

If you have a preferred brand, we deal with several manufacturers such as Murata, 1anasonic Industrial$evices, T$2, TE %onnectivity or Tokin, among other manufacturers. 3ou can easily refine your EMI filter

product search results by clicking your preferred EMI filter brand below from our list of manufacturers.

Applications for EMI Filters:

Typical EMI filter applications include4

•$ata lines

• 0econdary power supply lines for digital audio " video and communications equipment

• %omputer motherboards

• 506 hubs

• 1rinters

• 7ard disk drives

• %$ and $8$ -9Ms

• A% adapters

• Electronic musical instruments

Choosing the Right EMI Filter:

+hen you are looking for the right EMI filters, with the utureElectronics.com parametric search, youcan filter the results by various attributes4 by Type :%apacitor Type, ;% %ombined Type, ;ine,

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