Outline & History

Since we established, we have been growing with major electronics companies all over the world.


Company Name UNIFIVE
Established December 1989
Capital USD3,000,000
Product range

AC-DC Adaptor

Open Frame Switching Power Supply

Medical Use AC Adaptor

DECT Telephone & VOIP AC-DC Adaptor  DC-DC Adaptor (Car charger)


Dec.1998 Established UNIFIVE Co., Ltd. with a capital of 5 million yen in Iidabashi, Chiyoda-ku, Tokyo.
Dec.1990 Relocated to Kasai, Edogawa-ku, Tokyo.
Apr.1995 Established the Overseas Sales Department.
July.1995 Increased capital to 20 million yen.
Oct.1996 Established the AC Adapter and Switching Power Supply Sales Department.
Oct.1998 Established UNIFIVE Technology in Taiwan.
Feb.2001 Established a factory in China.
Nov.2002 Established a local subsidiary in the United States.
Dec.2003 Established UNIFIVE Korea in South Korea.
Aug.2009 Established the second factory in China.
Jan.2010 Increased capital to 35 million yen.
Oct.2013 Relocated the head office to Kanda, Chiyoda-ku, Tokyo.
Feb.2014 Opened an Osaka branch office.
Jan. 2018 Established the Taipei R&D Center.
Jan.2020 Developed and released DC/DC converters.
Mar.2022 Established a factory in Taichung.

You can get the product catalog in PDF.

Thank you for your interest in our products and services.

Please don't hesitate to contact us with any questions or need assistance regarding our products and services, including AC DC adapters, switching power supplies, and more.