TDK (OTCMKTS:TTDKY) Corporation, traded over the counter in the U.S. under the symbol TTDKY, is a global electronics company based in Tokyo, Japan. Founded in 1935 as Tokyo Denki Kagaku Kogyo K.K., TDK has grown from its origins in ferrite material production to become a leading supplier of electronic components, electronic materials, and energy device solutions. The company maintains a strong presence in key markets across Asia, Europe, and the Americas through its network of manufacturing sites, research centers, and sales offices.
TDK’s business activities encompass the design, development, and manufacture of a broad range of electronic components and functional materials. Its product portfolio includes multilayer ceramic capacitors, inductors, ferrite components, piezo and protection devices, and advanced sensors for applications such as power management, signal processing, and motion control. The company also offers energy storage solutions, including rechargeable lithium-ion batteries and power supplies tailored for consumer electronics, industrial equipment, and automotive systems.
Serving industries from automotive and industrial to information technology and telecommunications, TDK’s components are integrated into devices ranging from smartphones and data centers to electric vehicles and renewable energy systems. The company’s global footprint supports just-in-time delivery and localized technical support for original equipment manufacturers and contract electronics producers, while its research and development efforts focus on miniaturization, efficiency improvements, and enhanced performance under demanding operating conditions.
Under the leadership of President and CEO Koichi Yamashita, TDK emphasizes innovation, sustainability, and digital transformation initiatives. The company continues to invest in cutting-edge material sciences and manufacturing technologies, aiming to address emerging trends such as electrification, connectivity, and environmental stewardship. Through strategic partnerships and targeted acquisitions, TDK seeks to expand its product offerings and strengthen its position as a critical supplier in the global electronics ecosystem.
