Kazuhiko Matsui

Title: Kazuhiko Matsui: Innovator in Solder Technology

Introduction

Kazuhiko Matsui is a prominent inventor based in Tochigi-ken, Japan. He has made significant contributions to the field of solder technology, particularly in the development of advanced materials that enhance the reliability of electronic connections. His innovative approach has led to the creation of a patented product that addresses critical issues in the industry.

Latest Patents

Kazuhiko Matsui holds a patent for an Ag ball, which includes various forms such as ag core ball, flux-coated ag ball, flux-coated ag core ball, solder joint, formed solder, solder paste, and ag paste. This invention provides an Ag ball with a low alpha dose and high sphericity, regardless of impurity elements present. The patent specifies that to suppress soft errors and reduce connection faults, the content of uranium (U) must be equal to or less than 5 ppb, and thorium (Th) must also be equal to or less than 5 ppb. Additionally, the purity of the Ag ball must be between 99.9% and 99.9995%, with an alpha dose of equal to or less than 0.0200 cph/cm. The invention also requires that the content of lead (Pb) or bismuth (Bi), or the total content of both, must be equal to or more than 1 ppm, and the sphericity must be equal to or more than 0.90.

Career Highlights

Kazuhiko Matsui is associated with Senju Metal Industry Co., Ltd., where he has played a vital role in advancing solder technology. His work has been instrumental in improving the performance and reliability of electronic components, making significant impacts in various applications.

Collaborations

Throughout his career, Matsui has collaborated with notable colleagues, including Takashi Akagawa and Hiroyoshi Kawasaki. These partnerships have fostered innovation and contributed to the development of cutting-edge technologies in the field.

Conclusion

Kazuhiko Matsui's contributions to solder technology exemplify the importance of innovation in enhancing electronic reliability. His patented inventions continue to influence the industry, showcasing his commitment to advancing technology.