The main application for Metal Powder Composite Choke Coils is as a power supply circuit to provide power to CPUs in PCs and other devices. Metal Powder Composite Choke Coils are especially becoming a must for high-performance laptops and AV PCs, due to the large current applied to their circuits. These coils are becoming an indispensable component in designing PCs with more functions and a higher performance, as well as to realize devices with the same performance but with reduced loss and fewer problems with extended operation and cooling. Metal Powder Composite Choke Coils by NEC TOKIN have received recognition for their high-performance and reliability, becoming a recommended component by CPU manufacturers and are integrated into power supply circuits of numerous PCs. In recent years, there is an increase in products that are equipped with CPUs and image processing circuitry, with qualities virtually the same as PCs though their names are different. For example, next-generation DVDs and consumer games, large-screen LCD televisions, plasma display televisions, and digital TVs… all of these make use of Metal Powder Composite Choke Coils. Additionally, there is a rise in application in dispersed power supplies for servers, indispensable devices to the Internet society. Moreover, with high-performance, multifunctional telephones having moving image shooting functions and a high-definition displays, as well as GPS and one-segment broadcasting functions, these types of third generation mobile phones are now bordering on being PCs. A more efficient power supply is required in this field too. And Metal Powder Composite Choke Coils are making a significant contribution to this application. The technological needs of the times are bound to become even more severe. NEC TOKIN is working to develop materials with increased superiority. This includes the scheduled introduction of the newly developed material "SenntixTM" (*2), realizing even lower loss. This will indeed further the evolution of Metal Powder Composite Choke Coil performance. NEC TOKIN's Metal Powder Composite Choke Coils offer excellent characteristics that will bring about future electronics devices with more functions and heightened performance. *2 "SenntixTM" This is a soft magnetic material of metal glass with iron as its main composition element. The uniqueness of metal glass is characterized by a stable and exceptional amorphous structure that has been unavailable. Though for this reason it was previously difficult to achieve, now both the high saturation magnetic flux density characteristics of an iron soft magnetic material and the superior low loss characteristics of an amorphous material have been successfully combined. In this way, the co-existence of large current responsiveness and high efficiency for inductors has been realized.