The ER17S270JKR from Gowanda Electronics is a RF Inductor with Inductance 0.27 uH, DC Resistance 0.11 Ohms, DC Current 853 mA, Self Resonant Frequency 250 MHz, Operating Temperature -55 to 105 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for ER17S270JKR can be seen below.