The ER18M201JR from Gowanda Electronics is a RF Inductor with Inductance 2 uH, DC Resistance 0.97 Ohms, DC Current 505 mA, Self Resonant Frequency 140 MHz, Operating Temperature -55 to 125 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for ER18M201JR can be seen below.