The AIAC-1512C-18N5J-T from Abracon LLC is a RF Inductor with Inductance 0.0185 µH, DC Resistance 0.0039 Ohms, DC Current 4 A, Self Resonant Frequency 2.5 GHz, Operating Temperature -40 to 125 Degree C. Tags: Air Core Inductor. More details for AIAC-1512C-18N5J-T can be seen below.