Square Air Core Low Inductance RF Inductors Coilcraft Square Air Core Low Inductance RF Inductors feature excellent Q factors of up to 130 and current ratings from 2.7A to 4.4A. These lower inductance models offer 20x values from 5.5nH to 27nH. Each value is available at 5% and 2% tolerance in 7' machine-ready reel or less-than-full-reel packaging. The halogen-free RF inductors use solder-coated leads to ensure reliable soldering and have an ambient temperature rating from -40° to +125°C. Coilcraft square air core lower inductance RF inductors use a flat top/bottom design for reliable pick and place and mechanical stability.