The WW0603 Series from Vanguard Electronics is a RF Inductor with Inductance 0.0018 to 0.27 uH, DC Resistance 0.07 to 1.78 Ohms, DC Current 195 to 1000 mA, Self Resonant Frequency 600 to 6000 MHz, Operating Temperature -55 to 125 Degree C. Tags: Wire Wound Inductor, Chip Inductor. More details for WW0603 Series can be seen below.