Investigation of SPICE Models for Overvoltage Protection Devices With Respect to Fast Transients

Susanne Maria Bauer*, Werner Renhart, Oszkar Biro, Christian Tuerk, Christoph Maier, Gunter Winkler, Bernd Deutschmann

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


Models of overvoltage protection devices, such as transient voltage suppressor diodes (TVS-diodes) are largely available in circuit analyzer tools. For this letter, the widely used circuit simulation tool LTspice was employed and during the course of investigating the simulation of such protection devices in the context of electrical fast transient phenomena, especially electrical fast transients (EFT/BURST) and electrostatic discharge~(ESD), certain existing diode-model types can present inaccuracies when predicting the disturbances generated by those devices. Presumably this is the case regarding the model of the junction capacitances, especially for the cutoff region, since the implementation follows a~linear extrapolation and therefore differs from the real behavior of the protection device under test. This letter deals with the investigation of a~simulation setup and occurring limitations for the analysis of the transient behavior. It should give some encouragement to always consider given model-limitations and how they can affect the simulated results and also if the applicability for certain investigations is provided.
Original languageEnglish
Pages (from-to)20-25
JournalIEEE Letters on Electromagnetic Compatibility Practice and Applications
Issue number1
Publication statusPublished - 22 Apr 2019


  • circuit simulation
  • electromagnetic compatibility
  • electrical fast transients
  • overvoltage protection
  • transient voltage suppressor (TVS)


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