Taiyo Yuden Offers New Low-Profile Wire-Wound Power Inductors

Taiyo Yuden (U.S.A.) Inc. announced the immediate availability of its new BRL3225 series of compact, low profile, wire-wound chip inductors for switch-mode dc-dc converter applications in digital cameras, portable games, hard disk drives and other high-current-use devices.

Measuring just 3.2 x 2.5mm with a 1.7mm maximum height, the seven models in the BRL3225 series offer a combination of high current and inductance and low dc resistance (R_DC ). The BRL3225T-1R0M, for example, is rated at 2.4A at 1.0µH inductance while providing 0.043Ω R_DC. The company claims they have the highest current rating in a 1210-size device.

According to the company, compact digital devices are seeing increased need for switch-mode dc-dc converters to maximize efficient use of battery power stretched to the limit by added end-device functionality. Because higher-performance products require increased current availability, greater attention is now being paid to the dc bias characteristics of power inductors playing an increasingly important role in power IC designs.

In response to this challenge, Taiyo Yuden states that it optimized the core shape and electrode structure of the conventional inductor design by means of a unique sleeveless square-core winding that eliminated all wasted space and thickened the lead wire inside the inductor to achieve the lowest possible dc resistance. As a result, the company states that it was able to develop a compact, high-efficiency chip inductor with what is described as the industry’s highest current rating in the EIA 1210 form factor, while also providing optimal inductance and dc resistance values.

The devices are sample priced at $0.20 each, with a delivery of 2 weeks ARO.