Japanese STL technical committee in CRIEPI had participated in STL since 1984. Then, JSTC was established in 1998 as a committee in the Japan Electrical Manufacturers' Association as a Japanese representative organization to STL taking over from Japanese STL technical committee. JSTC had been conducting actively in the field of high power testing as a representative organization to STL in Japan since then. As a result, JSTC became an associate member of STL in 1998 and has become a member of STL since 2001.