Drum cores serve EMI filtering and switch-mode power supplies

May 10, 2017

2 min read

Lake Forest, CA. Premier Magnetics has introduced its new line of low-cost, high-performance drum core inductors designed for EMI filtering and switch-mode power-supply applications. With a product offering of over two dozen models with inductance values from 100 to 10,000 µH, the new PM-R Series boasts low DC resistance (DCR), providing low temperature rise at high peak currents. Their combination of high peak current and high self-resonant frequency (SRF) make the PM-R Series inductors suitable as a drop-in replacement for lower performing drum core devices. And in applications where the devices’ maximum height of 10.0 to 11.5 mm is acceptable, the PM-R Series offers a cost-effective alternative to surface-mount inductors.

Premier Magnetics’ PM-R drum core inductors are offered in two series, PM-R2 (7.5 mm, dia. x 10.0 high, max) and PM-R3 (9.5 mm, dia. x 11.5 high, max), each offering models with a range of 100 µH to 10 mH. Both series of inductors are available with sleeving (+125°C) and without sleeving (+155°C). Standard operating temperature range is -40 to 130°C, with higher temperatures available. The radial-leaded components are RoHS compliant.

“The new PM-R drum core inductors are an optimal choice in applications that need a low-cost solution in a size that can be manipulated to fit into tight spaces,” said Jim Earley, president of Premier Magnetics. “These devices perform particularly well in high peak-current applications.”

Price starts at $0.15 each in OEM quantities. Samples are in stock for immediate delivery. Delivery is eight weeks ARO for OEM quantities.

http://premiermag.com/pdf/pmr.pdf

About the Author

Rick Nelson

Contributing Editor

Rick is currently Contributing Technical Editor. He was Executive Editor for EE in 2011-2018. Previously he served on several publications, including EDN and Vision Systems Design, and has received awards for signed editorials from the American Society of Business Publication Editors. He began as a design engineer at General Electric and Litton Industries and earned a BSEE degree from Penn State.