The ER17S243JR from Gowanda Electronics is a RF Inductor with Inductance 240 uH, DC Resistance 5.8 Ohms, DC Current 115 mA, Self Resonant Frequency 7 MHz, Operating Temperature -55 to 105 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for ER17S243JR can be seen below.