The 0806SQ Series from Coilcraft are Square Air Core Inductors with inductance values from 5.5 to 19.4 nH. They have Q-factors of up to 90, DC resistance of less than 10 mOhm and can handle an RMS current of 2.9 A. These inductors have a flat top and bottom for reliable pick and place and mechanical stability. They are suitable for use in narrowband RF amplifier matching and tuning applications. High-reliability versions of these inductors are also available for space, military, and other critical applications.