Wound Chip Inductors offer current ratings to 1,100 mA.

Press Release Summary:

Offered in packages with 16mm² footprint and heights from 1.0-1.8 mm, NR series is designed for use in DC/DC converter choke-coil applications. Ferrite-resin compound, applied to exterior of wound chip inductor, allows more space for internal conductor, minimizes heat generation, and improves DC inductance characteristics. Products exhibit damage-free durability, even when dropped from 6 ft height.

Original Press Release:

Taiyo Yuden's New Low-Profile Wound-Chip Inductors Provide 30% Higher Current Rating than Conventional Inductors of Equal Size; Excellent Shock Resistance in Drop Tests from 1.8m (6')

NR Series inductors offer three alternative height dimensions from 1.0mm to 1.8mm to optimize lower-profile designability

Schaumburg, IL-May 21, 2004-TAIYO YUDEN (U.S.A.), INC. announces the new NR series of low-profile wound-chip inductors in the industry's smallest packages relative to comparable device performance. The NR series is designed specifically for use in DC/DC converter choke-coil applications, an emerging industry trend driving the replacement of less-efficient charge pump power supplies that cannot meet the convergent needs of new-generation feature-intensive cell phones and other high-power-consumption portables. As a result of TAIYO YUDEN's material science expertise and innovative fabrication techniques, NR series devices provide up to 30% higher rated current than conventional inductors of equal size. The three part numbers in the NR series provide a uniform 4mm x 4mm footprint, and are available in 1.0mm (Model number NR4010), 1.2mm (NR4012) or 1.8mm (NR4018) device heights to remain within the critical vertical limits of key ICs in ultra-portable devices.

Increasing cell phone functionality, such as adding color LCDs and digital movie cameras, simultaneously raises IC counts and limits space for individual electronic components. Consequently, strong demands are being made on choke coils to provide higher rated current, take up less PCB real estate, and stay under the component height limits imposed by other essential ICs. Responding to this need, TAIYO YUDEN's NR series wound-chip inductors occupy a footprint of only 16mm². To increase rated current, the company developed a unique ferrite-resin compound that, when applied to the exterior of the wound chip inductor, allows more space for the internal conductor, minimizes heat generation and improves DC inductance characteristics. The result is a unique component structure that achieves a 1.3 times higher rated current than conventional inductors of the same size.

Advances in current rating and size reduction are matched by improved shock resistance, tests of NR series products mounted on printed circuit boards have confirmed excellent, damage-free durability, even when dropped from a 1.8m (6') height.

Specifications of NR Series Low Profile Wound Chip Inductors
              Max Rated Current (mA)   RDC (Ù)      Size (mm)
Part Number 2.2uH 10uH L x W x H

NR4018 n/a 840 0.18 4 x 4 x 1.8
NR4012 1100 740 0.24 4 x 4 x 1.2
NR4010 950 580 0.38 4 x 4 x 1.0

For more information, please visit: t-yuden.com/products/index.cfm, input Part Number Search = NR4010; NR4012; NR4018.

Price, Each (Sample): $0.42-NR4010;



Availability: NR4012 and NR4018: available now in production volume; NR4010 to be in production volume, Fall 2004.

Delivery: Samples: 1-2 weeks ARO, typical

Now in its 54th 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 cellular phone applications, the company reports annual sales of nearly US$1.4B. Worldwide, TAIYO YUDEN employs more than fifteen thousand people, and the company's North American affiliate, TAIYO YUDEN (U.S.A.), INC., operates sales and engineering offices in: Chicago, IL; Raleigh, NC; Irving, TX; San Jose, CA; and San Diego County.

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