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RF Inductors Are Not Magnetic

May 15, 2013
These miniature inductors are designed for applications where magnetism must be kept to a minimum, such as in medical x-ray machines

The SMG1812 RF inductor series is touted by its manufacturer, Gowanda Electronics, as featuring the world’s smallest nonmagnetic RF inductor. The wire-wound, surface-mount inductors are 40% smaller than the company’s previous smallest non-magnetic molded RF inductors, the SMG3013 series. They are designed for magnetically sensitive applications, such as test equipment and medical diagnostic equipment. The miniature SMG1812 inductors measure just 4.8 x 3.4 x 3.5 mm. The components are available with inductance values of 0.010 to 0.082 μH, minimum quality factors (Qs) of 35 to 40, minimum self-resonant frequencies (SRFs) from 750 to 1000 MHz, maximum DC resistance (DCR) values of 0.10 to 0.25 Ω, and DC current ratings from 700 to 1230 mA. A lead-free RoHS-compliant version is available as model SMG1812LF.

Gowanda Electronics Corp., 1 Magnetics Pkwy., Gowanda, NY 14070; (716) 532-2234, FAX: (716) 532-2702, www.gowanda.com.

About the Author

Jack Browne | Technical Contributor

Jack Browne, Technical Contributor, has worked in technical publishing for over 30 years. He managed the content and production of three technical journals while at the American Institute of Physics, including Medical Physics and the Journal of Vacuum Science & Technology. He has been a Publisher and Editor for Penton Media, started the firm’s Wireless Symposium & Exhibition trade show in 1993, and currently serves as Technical Contributor for that company's Microwaves & RF magazine. Browne, who holds a BS in Mathematics from City College of New York and BA degrees in English and Philosophy from Fordham University, is a member of the IEEE.

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