The 91S Series from Vanguard Electronics is a RF Inductor with Inductance 0.010 to 1 uH, DC Resistance 0.02 to 0.40 Ohms, DC Current 700 to 3000 mA, Self Resonant Frequency 150 to 1000 MHz, Operating Temperature -55 to 125 Degree C. More details for 91S Series can be seen below.