New air-core inductors address high-performance filtering, efficient energy transfer, and narrow inductance tolerances required for high-frequency applications

RIVERSIDE, Calif. — January 29, 2026 — Bourns, a leading manufacturer of electronic components for power, protection, and sensing solutions, has announced the introduction of its AC3028SQ, AC5037SQ, ACXX14SQ, ACXX15SQ, and ACXX18SQ air-core inductor series. These five new series offer high Q factors, high self-resonant frequencies (SRFs), and narrow inductance tolerances, enabling designers to meet the ongoing demands for smaller, faster, and denser electronic devices. These new air-core inductors are available in flat-top and flat-bottom rectangular packages, which enable efficient, reliable pick-and-place assembly and excellent mechanical stability.

Key features of the five new inductor series include a Q factor of up to 230 and an inductance range of 5.5nH to 82nH, making them ideal choices for the latest high-frequency TV and radio receivers, wireless transmitters, RF amplifiers, and tuning applications. Additionally, the AC3028SQ, AC5037SQ, ACXX14SQ, ACXX15SQ, and ACXX18SQ series inductors feature narrow inductance tolerances of 2% and 5%, with DCR values ranging from 3.4mΩ to 12mΩ. Rated currents range from 2.7A to 5.6A, and operating temperatures range from −25°C to +125°C.

The Bourns® AC3028SQ, AC5037SQ, ACXX14SQ, ACXX15SQ, and ACXX18SQ air core inductor series are currently available and are RoHS compliant.

For more information, please visit the Bourns website.

　※1：RoHS Directive 2015/863, Mar 31, 2015 and Annex.

product page

For more information on our full line of air core inductors, including the AC3028SQ, AC5037SQ, ACXX14SQ, ACXX15SQ, and ACXX18SQ, please visit the Bourns page.

• Air Core Inductor Products
• AC3028SQ
• AC5037SQ
• ACXX14SQ
• ACXX15SQ
• ACXX18SQ

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