Uploaded November 2025 | Updated September 2026, 2 weeks ago
In this episode of the Würth Elektronik Watts Up Podcast, we focus on the fundamentals of transient suppression and EMI filtering for different electronic interfaces. As electronic devices become more interconnected, controlling voltage spikes and interference is increasingly important. We discuss filter designs for mains power, asymmetrical, and symmetrical signal interfaces, explaining how to select and size components such as ferrites, capacitors, varistors, and TVS diodes. You’ll hear calculation examples and learn how to apply these solutions to scenarios like USB and power line protection. Topics include: - Why transient suppression is critical for modern circuits - How to approach filter design for different interface types - Component selection tips and calculation steps - Application examples and common pitfalls.
For more details, download the full application note: we-online.com/components/media/o869938v410%20SN024a_EN.pdf To view the datasheets or order samples, visit Würth Elektronik online or visit the MyWE customer portal.
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Timestamps:
00:00 Introduction
04:00 EMI Filter of an Asymmetrical Signal Interface with Transient Protection
05:10 Filter Circuit of the Data Line
06:45 Impedance characteristics WE-CBF Surface Mount Ferrite- 74279273
20:00 EMI Filter of a Symmetrical Signal Interface with Transient Protection
27:40 Power Line Filter with Transient Protection
37:15 Conclusion
In this episode of the Würth Elektronik Watts Up Podcast, we focus on the fundamentals of transient suppression and EMI filtering for different electronic interfaces. As electronic devices become more interconnected, controlling voltage spikes and interference is increasingly important. We discuss filter designs for mains power, asymmetrical, and symmetrical signal interfaces, explaining how to select and size components such as ferrites, capacitors, varistors, and TVS diodes. You’ll hear calculation examples and learn how to apply these solutions to scenarios like USB and power line protection. Topics include: - Why transient suppression is critical for modern circuits - How to approach filter design for different interface types - Component selection tips and calculation steps - Application examples and common pitfalls.
For more details, download the full application note: we-online.com/components/media/o869938v410%20SN024a_EN.pdf To view the datasheets or order samples, visit Würth Elektronik online or visit the MyWE customer portal.
Listen to our PODCAST🎙️: we-online.com/en/news-center/podcast
Würth Elektronik online: we-online.com/en/components/products
Custom Design Studio: we-online.com/en/products/components/service/custom-transformers
Follow us on LinkedIn: linkedin.com/company/wurth-elektronik (Americas)
Follow us on LinkedIn: linkedin.com/company/wuerth-elektronik-group (Europe)
Like us on Facebook: facebook.com/WurthElectronics (Americas)
Like us on Facebook: facebook.com/Wuerth.Elektronik.Group (Europe)
Follow us on X: https://x.com/WurthElectronic/ (Americas)
Follow us on X: https://x.com/we_online (Europe)
Follow us on Instagram: instagram.com/wurthelectronics (Americas)
Timestamps:
00:00 Introduction
04:00 EMI Filter of an Asymmetrical Signal Interface with Transient Protection
05:10 Filter Circuit of the Data Line
06:45 Impedance characteristics WE-CBF Surface Mount Ferrite- 74279273
20:00 EMI Filter of a Symmetrical Signal Interface with Transient Protection
27:40 Power Line Filter with Transient Protection
37:15 Conclusion
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