The ER17S122JKR from Gowanda Electronics is a RF Inductor with Inductance 12 uH, DC Resistance 2 Ohms, DC Current 200 mA, Self Resonant Frequency 44 MHz, Operating Temperature -55 to 105 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for ER17S122JKR can be seen below.