Surface Mount EMI Filters

Compact, high‑performance solutions for suppressing electromagnetic interference in modern electronic designs.

Browse Surface Mount EMI Filters

View All SMD C

SMD C

Simple, space‑efficient EMI suppression for high‑density PCB designs.

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View All SMD Pi

SMD Pi

Enhanced EMI attenuation for demanding noise‑reduction applications.

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View All SMD X2Y

SMD X2Y

High‑frequency noise suppression with superior differential and common‑mode filtering.

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Educational Resources

Blogs
Videos
The Role of EMI Filters in Power Electronics

The Role of EMI Filters in Power Electronics

Effective EMI filtering helps high-voltage power systems reduce electrical noise while maintaining safety and reliable performance.
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View Article for The Role of EMI Filters in Power Electronics

What Are EMI Filters?

To understand what an electromagnetic interference (EMI) filter is, and what it does, we need to first know what EMI is and why it needs to be filtered.
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View Article for What Are EMI Filters?

Overcoming EMI in Electric Vehicle Applications

According to the U.S. Bureau of Transportation Statistics, electric vehicle (EV) sales in the U.S. reached record high monthly volume in March 2021 and continued to rise, nearly doubling in 2021.
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View Article for Overcoming EMI in Electric Vehicle Applications

Continuing Our Investment in Surface-Mount EMI Filters

Surface-mount EMI filters provide high-performance noise suppression for demanding, high-reliability applications.
View Article for Continuing Our Investment in Surface-Mount EMI Filters
View Article for Continuing Our Investment in Surface-Mount EMI Filters
Your Guide to Selecting Safety Capacitors for EMI Filtering in the PFC Stage of an AC/DC Converter

Your Guide to Selecting Safety Capacitors for EMI Filtering in the PFC Stage of an AC/DC Converter

Proper safety capacitor selection enables effective EMI filtering in PFC circuits.
View Article for Your Guide to Selecting Safety Capacitors for EMI Filtering in the PFC Stage of an AC/DC Converter
View Article for Your Guide to Selecting Safety Capacitors for EMI Filtering in the PFC Stage of an AC/DC Converter

What are EMI Filters?

Learn how EMI filters work and how Knowles delivers high‑reliability ceramic EMI filtering that suppresses noise and protect...
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View Resource for What are EMI Filters?

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Product Documentation

Capacitors for RF Power in Semiconductor Manufacturing

RF power capacitors engineered to deliver the stability and reliability that next-generation systems demand.
View Resource for Capacitors for RF Power in Semiconductor Manufacturing
View Resource for Capacitors for RF Power in Semiconductor Manufacturing

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