Air – Lower inductance values, low loss, excellent Q.
Ceramic - Small size, low loss, excellent Q.
Ceramic/ferrite - Higher inductance, small size, high Q.
Ferrite – Highest current, lowest DCR
Coilcraft tests many of its products to stringent AEC-Q200 automotive quality standards.
Grade 1 – tested from -40°C to +125°C ambient
Grade 3 - tested from -40°C to +85°C ambient
For new designs
"NR" means Coilcraft offers better options or the part may be nearing end of life.