Degradation characteristics of SiC power devices for DC circuit breaker by repetitive unclamped inductive switching test

Mitsuhiko Sagara, Keiji Wada, Shin ichi Nishizawa

Research output: Contribution to journalArticle


This paper investigates the degradation of SiC power devices for DC circuit breaker through repetitive unclamped inductive switching (UIS) tests. The ON resistance of SiC power devices such as MOSFET and JFET are lower compared with Si devices. Therefore, SiC power devices are suitable for use as DC circuit breakers. Several papers have discussed degradation of SiC power devices; however, few studies have determined a suitable power device for a DC breaker from a degradation standpoint. In this paper, four types of SiC devices were subjected to repetitive UIS tests. Our research demonstrated SiC-JFET to be suitable for a DC breaker.

Original languageEnglish
Article number113417
JournalMicroelectronics Reliability
Publication statusPublished - Sep 2019


All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Atomic and Molecular Physics, and Optics
  • Safety, Risk, Reliability and Quality
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Electrical and Electronic Engineering

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