TDK Corp is a Japan-based company mainly engaged in the manufacture and sale of passive components, sensor application products, magnetic application products and energy application products. The Company operates through four business segments. The Passive Components segment is engaged in the provision of ceramic capacitors, aluminum electrolytic capacitors, film capacitors, inductive devices, high frequency components, piezoelectric material components and circuit protection components. The Sensor Application Products segment is engaged in the provision of temperature and pressure sensors, magnetic sensors and micro electromechanical system (MEMS) sensors. The Magnetic Application Products segment is engaged in the provision of hard disk drive (HDD) heads, HDD suspensions and magnets. The Energy Application Products segment is engaged in the provision of energy devices and power supplies. The Company is also engaged in the provision of mechatronics and micro actuators products.