The AIAC-4125C-R380J-T from Abracon LLC is a RF Inductor with Inductance 0.38 µH, DC Resistance 0.0255 Ohms, DC Current 2.5 A, Self Resonant Frequency 500 MHz, Operating Temperature -40 to 125 Degree C. Tags: Air Core Inductor. More details for AIAC-4125C-R380J-T can be seen below.