Protections and EMI filters

Integrated circuits are exposed to several possible sources of stress coming from power and or data lines which can result in malfunctions or even lead to dramatic failures. To ensure that these circuits are remain reliable and operate correctly, it is important to include protection mechanisms.

ST's Protection and EMI filter portfolio offers a unique and comprehensive choice of high-performance components to ensure safe electronic system operation and immunity from electromagnetic interference (EMI).



Our rich portfolio protects integrated circuits against all types of electrical stress including:

Produced with ST's technologies, they ensure the best protection and filtering performance for demanding systems.

Our solutions are housed in industry standard packages in addition to cost-effective alternatives such as high power density packages for TVS diodes, ultra-small and multi-line WLCSP devices for ESD and EMI filters.

From 5000 W SMC packages to 01005 and smaller, we help engineers with design simplification, space savings and cost optimization.

Our ASIP technology enables the horizontal integration of passive components into high-reliability silicon circuits and is compatible with the latest vertical integration trends such as SIP (System In Package) systems thanks to ultra-thin packages down to 80 µm.

Automotive-grade qualification for smart mobility applications

Automotive grade qualification (AEC Q101) and Automotive surge compatibility is available for our Automotive line-up that is rapidly expanding to meet the latest EV and Autonomous driving challenges.

All ST production sites adhere to the internationally recognized quality management standards ISO 9001 and IATF (international Automotive Task Force) 16949.

FREE WEBINAR EMC - system immunity against electrostatic discharges webinar

During this one-hour webinar, you will learn how to make your electronic system more robust against destructive Electrostatic Discharges (ESD) by using ST ESD Protection components.

During this webinar you will learn about:

  • ESD major root causes and EMC standards
  • ST ESD Protections, which can help to protect your application against ESD
  • Many real application examples demonstrating where protections play an important role
  • How to select the best protection for your use cases

Protection and EMI Filters: 10 years longevity commitment

ST’s 10 years longevity program ensures stable and continuous supply for customers

Protection and Filter Devices

FREE WEBINAR 10.7 GHz bandwidth common-mode filters for new USB4 and HDMI 2.1 standards

During this one hour webinar, you will learn how to optimize antenna RF sensitivity in noisy conditions in compliance with EMC standards for industrial and personal electronics applications. This webinar will help hardware engineers concerned with antenna de-sense or EMC standards compliance, as well as embedded systems engineers looking for ways to design more compact high-speed USB and HDMI connectors. There is a dedicated session with various RSSI, spectrum analyses, and transmission speed test results for Wi-Fi and 10 Gbps data transmission.


  • Why ECMF is required:
    • Noise suppression and common mode filtering
    • Antenna de-sense and immunity concerns for compliance with EMC standards
  • ST application lab session with:
    • SSI test results, spectrum analysis, and transmission speed test results of 10 Gbps USB transmission
    • Overview of latest USB4 and HDMI 2.1 standards
    • ST ECMF application and product overview