Inductors suit compact dc-dc converter choke coils.
November 6, 2006 -
Providing dc resistance of 0.006-0.29 W, NR8040T series of power inductors offer inductance of 0.9-100 µH, and current ratings of 1.0-11.8 A. Model 100M delivers 3.4 A at 10 µH and facilitates thin-profile products. Available in 13 models, 8 x 8 x 4 mm devices employ sleeveless square-core winding that eliminates space wastage and thickens lead wire inside to achieve low resistance. Product is used in flat-screen TVs, automobile navigation systems, and video game consoles.
(Archive News Story - Products mentioned in this Archive News Story may or may not be available from the manufacturer.)
Original Press release
Taiyo Yuden (USA), Inc.
1930 N. Thoreau Dr., Suite 190
Schaumburg, IL, 60173
USA
Taiyo Yuden's New 8mm-Square Wire-Wound Inductor Achieves 3.4A at 10µH--Industry's Highest Rated Current for Its Size
New 36% smaller footprint NR8040T series inductors offer low RDC for DC-DC converter choke-coil applications in thin flat-screen TVs
SCHAUMBURG, IL--October 9, 2006--TAIYO YUDEN (U.S.A.), INC. announces the NR8040T series of 8 x 8 x 4mm wire-wound power inductors for DC-DC converter choke coil applications in LCD and plasma TVs, automobile navigation systems, home video game consoles, and other devices. The 13 models (see table below) in the NR8040T series offer an excellent combination of low DC resistance (0.006-0.29 Ohms), high inductance (0.9-100µH) and high current ratings (1.0-11.8A). The NR8040T-100M device, for example, offers the industry's highest rated current (3.4A @ 10µH) in the 8mm x 8mm form factor. With the equivalent performance of larger 10mm square devices, the 36% smaller footprint of the NR8040T-100M device facilitates more compact DC-DC converters and thinner-profile product designs.
LCD, plasma and other ultra-thin-chassis flat-screen televisions are becoming progressively larger with higher resolution, resulting in rising demand for DC-DC converters capable of providing high current as well as compact size. The demand for thinner-profile electronic products is driving a corresponding need for choke coils--the main component in DC-DC converters--with higher current capacity, lower DC resistance (RDC) and smaller physical size. Boosting current capability, however, requires increasing the size of the core and thickening the windings inside the inductor, both of which make reducing the device's size and profile very difficult.
The company responded to this design challenge by improving the round drum/sleeve core technology used by conventional inductor designs. TAIYO YUDEN instead developed a unique sleeveless square-core winding that successfully eliminates all wasted space and thickens the lead wire inside the inductor to achieve the lowest possible DC resistance.
Now being produced at the rate of three million units per month, the NR8040T wire-wound inductor product line-up presently includes the following part numbers:
For further information about the company's full line-up of 3, 4, 6 and 8mm-square NR series wire-wound inductors, call TAIYO YUDEN (U.S.A.), INC. or visit the company web site at yuden.us
Sample Price: $0.30 each
Availability: Now in volume production quantities
Delivery ARO: 2 weeks ARO
About TAIYO YUDEN:
Now in its 56th year, Tokyo-based TAIYO YUDEN CO., LTD. is a worldwide manufacturer of surface-mount and leaded passive components, Bluetooth modules, power electronics modules, power supplies and recordable digital media. With approximately 50% of the worldwide market in high-frequency multilayer chip inductors used in cell phones, the company reports annual sales of nearly US$1.6B. Worldwide, TAIYO YUDEN employs more than ten thousand people. The company's North American affiliate, TAIYO YUDEN (U.S.A.), INC., operates sales and engineering offices in Chicago, IL, Raleigh, NC, Irving, TX, and in California at San Jose and San Diego. For further information, visit the company's website at: yuden.us.
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