The ER17S from Gowanda Electronics is a RF Inductor with Inductance 0.10 to 1000 uH, DC Resistance 0.025 to 17.5 Ohms, DC Current 70 to 1790 mA, Self Resonant Frequency 3.8 to 250 MHz, Quality Factor 40 to 60. Tags: Wire Wound Inductor. More details for ER17S can be seen below.