The ER17S510JR from Gowanda Electronics is a RF Inductor with Inductance 0.51 uH, DC Resistance 0.33 Ohms, DC Current 490 mA, Self Resonant Frequency 210 MHz, Operating Temperature -55 to 105 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for ER17S510JR can be seen below.