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 Nelson is a technical journalist who has served as executive editor of Test & Measurement World, chief editor of EDN, and executive editor of EE-Evaluation Engineering. He has also contributed to publications including Vision Systems Design and Electronic Design, and he has participated in many live panel discussions and webcasts. Rick has also held systems-engineering and product-development positions at General Electric and Litton Industries. He received his B.S.E.E. degree from The Pennsylvania State University.