Abstract
Transient voltage suppressors (TVS) are widely used for electrostatic discharge (ESD) and surge protection of electronic devices. Especially the usage of mobile devices for wireless communications requires extremely high production quantities in the range of multi-billion pieces of TVS per year. This article gives an introduction to the key performance parameters of different TVS technologies with low parasitic capacitance in the picofarad and sub-picofarad range, such as gas discharge tubes (GDT), polymer voltage suppressors (PVS), multi-layer varistors (MLV) and silicon TVS.
Zusammenfassung
Transient Voltage Suppressors (TVS) werden weitverbreitet zum ESD-Schutz sowie zum Überspannungsschutz von elektronischen Produkten eingesetzt. Speziell die stark wachsende Anwendung von Mobiltelefonen erfordert extrem hohe Fertigungsvolumen von ESD-Schutzbauelementen in Multi-Milliarden-Stückzahlen pro Jahr. Dieser Artikel gibt eine Einführung in die wichtigsten elektrischen Parameter von ESD-Schutzbauelementen sowie verschiedenen Technologien mit geringster parasitärer Kapazität im Picofarad- und Sub-Picofarad-Bereich. Es werden miniaturisierte Gasentladungs-Röhren (GDT), Polymer-ESD-Schutzbauelemente (PVS), Mehr-Lagen-Varistoren (MLV) und Silizium-TVS-Bauelemente beschrieben sowie deren typische Eigenschaften gezeigt.
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Notes
As an example the following simplified estimation of the number of ESD events at a heavily frequented cash dispenser: 1000 small to strong ESD events per day × 365 days × 10 years sums up to more than 3 million ESD events over life time.
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Acknowledgements
The authors would like to thank Dr. Nicole Killat and Dr. Markus Sauter for silicon TVS sample preparation and photographs.
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Simbürger, W., Willemen, J., Vendt, V. et al. Transient voltage suppressors—technologies and characteristics. Elektrotech. Inftech. 133, 11–17 (2016). https://doi.org/10.1007/s00502-015-0383-5
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DOI: https://doi.org/10.1007/s00502-015-0383-5
Keywords
- transient voltage suppressor (TVS)
- gas discharge tube (GDT)
- polymer voltage suppressor (PVS)
- multi-layer varistor (MLV)
- electrostatic discharge (ESD)