The ER10M391JKR from Gowanda Electronics is a RF Inductor with Inductance 3.9 uH, DC Resistance 1 Ohms, DC Current 250 mA, Self Resonant Frequency 80 MHz, Operating Temperature -55 to 105 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for ER10M391JKR can be seen below.