The ER17S512JR from Gowanda Electronics is a RF Inductor with Inductance 51 uH, DC Resistance 2.23 Ohms, DC Current 190 mA, Self Resonant Frequency 25 MHz, Operating Temperature -55 to 105 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for ER17S512JR can be seen below.