The 164-04A06SL from Coilcraft is a RF Inductor with Inductance 0.043 to 0.056 uH, DC Current 3.7 A(Irms), Self Resonant Frequency 940 MHz, Operating Temperature -40 to 85 Degree C, Quality Factor 66 to 86. Tags: Wire Wound Inductor. More details for 164-04A06SL can be seen below.