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Air core inductors tout high Q up to 200 at 400MHz

19 Jul 2013

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Coilcraft inductors

Coilcraft has introduced the 1111SQ Series high-performance, square air core inductors that the company said offers exceptionally high Q factors—up to 200 at 400MHz—and inductance values from 27-47nH. It is available in seven models with footprints from just 2.67 x 2.67mm.

According to the company, the spring was engineered to have a unique, square shape that has been optimised for coplanarity, resulting in a flat top and bottom for reliable pick and place operation and mechanical stability on the PCB. Solder-coated leads also ensure excellent solderability, added the firm.

The air core inductors offer current ratings to 5.5A, making them suitable for use as chokes in high-current RF power amplifiers for cellular towers and high-power radar, indicated Coilcraft. Their combination of performance, inductance values and tolerances as tight as 2% also make them ideal components in DOCSIS applications such as set-top boxes and cable modems, the firm added.

Complete technical details and free evaluation samples are available at www.coilcraft.com/1111sq.cfm. Parts are available from stock. Pricing at 1,000 pieces is $0.59 for the 1111SQ with 5% tolerance and $0.68 each for 2% tolerance.




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