The S31000 Series from Vanguard Electronics is a RF Inductor with Inductance 0.018 to 120 uH, DC Resistance 0.03 to 50 Ohms, DC Current 22 to 750 mA, Self Resonant Frequency 3 to 1200 MHz, Operating Temperature -55 to 125 Degree C. Tags: Chip Inductor. More details for S31000 Series can be seen below.