As the General Chair of ISPSD, I sincerely hope that all participants will enjoy this conference as a special and inspiring time. ISPSD is not only a technical conference, but also a place where people from different countries, regions, companies, and universities can come together to freely discuss and share their experiences. I believe that the true value of ISPSD lies in this open and friendly atmosphere, where mutual understanding can grow. I hope this conference will be a meaningful and memorable experience for every power semiconductor specialist.

This kind of ISPSD has been made possible thanks to the continuous efforts of many people who supported past conferences—especially the former General Chairs, Technical Program Chairs, organizing committee members, and sponsors. Before ISPSD was established around 1990, the field of power semiconductor device technology was not clearly defined. It was often considered part of the broader semiconductor field, including LSI, or as a component of power electronics. The pioneers who founded ISPSD made great efforts to create an international conference focused on power semiconductor device technology—and they succeeded in establishing a new and distinct technical field, as well as the ISPSD community. I would like to express my deep appreciation to all those who contributed to past ISPSDs.

New challenges are also important for ISPSD to maintain and grow the community. One such challenge this year is the introduction of the full paper submission scheme. This change was made to improve the quality of the review process and to shorten the time from submission to presentation. I understand that this required significant effort from the Technical Program Committee, and I would like to express my sincere thanks to all the committee members for their great efforts.

I would also like to mention the Short Course. This year, we invited lecturers from various countries and regions to give compact and informative talks on advanced technologies related to power semiconductors. I hope many of you will join and enjoy the course.

Another highlight of this year’s ISPSD is the strong connection with industry. We have 30 company exhibition booths, along with an Industry Session where companies will introduce their latest technologies.

This year, ISPSD is fully sponsored by the Institute of Electrical Engineers of Japan (IEEJ), with technical co-sponsorship from IEEE EDS, PELS, and IAS. We also received strong support from Kakenhi and NICT grants, and many companies kindly supported us as sponsors. I am very thankful for their contributions.

Welcome to ISPSD 2025 in Kumamoto and enjoy the conference!