Wire-Wound Power Inductors feature compact footprint.

Press Release Summary:




Measuring 2.5 x 1.8 x 1.2 mm, BRL2518 series is comprised of 5 models that have inductance values from 1.0-4.7 µH and current ratings from 1.6-0.7 A. Sleeveless square-core winding and thickness of lead wire lend to dc resistance values from 0.08-0.4 ohm. Series suits dc-dc converter choke coil applications in hard disk drives, LCD displays, digital cameras, PDAs, and other devices.



Original Press Release:



Taiyo Yuden's New, Compact Wire-Wound Power Inductors Offer Same 1.2mm Height, but with 50% Smaller Footprint



1.2mm height BRL2518 reduces previous model's 9mm2 footprint to 4.5mm², while retaining high rated current and low RDC

SCHAUMBURG, IL-March 1, 2007-TAIYO YUDEN (U.S.A.), INC. announces the immediate availability of its new BRL2518 series of wire-wound power inductors. Measuring just 2.5mm x 1.8mm with a 1.2mm maximum height, the five models (see table below) in the BRL2518 series offer an excellent combination of low DC resistance (0.08 to 0.4Ohms), high inductance (1.0 to 4.7µH) and high current ratings (1.6 to 0.7A). With the equivalent performance of larger devices, the 50% smaller footprint of the BRL2518 series facilitates more compact DC-DC converters and thinner-profile product designs. Now being produced at the rate of 10 million units per month, BRL2518 series wire-wound power inductors are ideally suited for DC-DC converter choke coil applications in hard disk drives, LCD displays, digital cameras, personal digital assistants and other devices.

The continuing miniaturization trend in portable equipment requires more compact, high-efficiency DC-DC converters to maximize battery power that has been stretched to the limit by added device functionality. Designing smaller DC-DC converters hinges on reducing the size of the choke coil, its main and largest component. However, reducing the size of the wire-wound inductor (functioning as a choke coil to prevent or limit AC while allowing DC to flow) increases resistance and reduces the efficiency of the DC-DC converter. For this reason, it is very difficult to reduce the size of an inductor while maintaining the lower-resistance characteristics of larger components.

TAIYO YUDEN responded to this design challenge by improving the round drum/sleeve core technology used by conventional inductor designs. The company developed a unique sleeveless square-core winding that successfully eliminated all wasted space and thickened the lead wire inside the inductor to achieve the lowest possible DC resistance. As a result, the company was able to develop a compact, high-efficiency choke coil for DC-DC converter applications that offered a 50 percent reduction in surface area compared to conventional inductors, while at the same time providing a minimal level of DC resistance (RDC).

The BRL2518 wire-wound inductor product line-up presently includes the following part numbers:
Part Number        Inductance (µH)±20%     RDC(Ohms)       Current Rating(A), Max
BRL2518 T 1R0M 1.0 0.080 1.6
BRL2518 T 1R5M 1.5 0.100 1.2
BRL2518 T 2R2M 2.2 0.135 1.0
BRL2518 T 3R3M 3.3 0.300 0.8
BRL2518 T 4R7M 4.7 0.400 0.7

For further information about the company's full line-up of passive components, including multi-layer chip capacitors (MLCC) and SMD chip inductors, call TAIYO YUDEN (U.S.A.), INC. or visit the company web site at www.yuden.us.

Sample Price (each): $0.20

Availability: Now; in volume

Delivery: 2 weeks ARO

About TAIYO YUDEN:

Now in its 57th 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$1.7B. 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: www.yuden.us.

For Further Information
Jun Nakajima, Marketing Manager
TAIYO YUDEN (U.S.A.), INC.
1930 Thoreau Drive, Suite 190
Schaumburg, IL 60173
Voice: 847-925-0888 o Fax: 847-925-0899
E-mail: jun@t-yuden.com
URL: www.yuden.us

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