Bourns expands shielded power inductor portfolio

By Gina Roos, editor-in-chief

Bourns, Inc. has expanded its shielded power inductor line with 11 new low-resistance, high-saturation-current model series. The Model SRP0xxx series, with a low profile of less than 2 mm, features a metal alloy powder core and flat wire construction that delivers several benefits including low copper loss, DC resistance, and audible core noise as well as high current saturation. This shielded construction also produces low magnetic radiation, offering good electromagnetic interference (EMI) performance and excellent temperature stability, said Bourns.

The series also offers higher reliability thanks to the use of external laser welding between the wire and terminal, which eliminates potential mechanical stress on the solder joint from the high-pressure molding process, said Bourns. Another benefit is the alpha-winding construction, which enables a wider inductance range at a given form factor while maintaining a very low-height profile.

The 11 new model series are designed to meet high-current-density requirements in various consumer electronics applications such as smartphones, tablet terminals, laptop computers, hard disk drives, solid-state drives, servers, voltage regulators, and compact power supply modules. These applications, because of their high current density, typically operate at higher temperatures due to increased heat production, which can lead to higher degradation rates.

However, Bourns’s inductors, by providing lower DC resistance, dissipate less power during operation, especially at higher current and switching frequencies. This enables a DC/DC converter or power supply to achieve higher power efficiency and meet application specifications, said the company.

Available now, the Model SRP0xxx shielded power inductor series are RoHS-compliant and halogen-free.