The 0603AF-39NXJR_ from Coilcraft is a RF Inductor with Inductance 0.039 µH, DC Resistance 0.12 Ohms, DC Current 1 A(Irms), Self Resonant Frequency 2200 MHz, Operating Temperature -40 to 85 Degree C. Tags: Chip Inductor, Wire Wound Inductor. More details for 0603AF-39NXJR_ can be seen below.