The MLRF1812-391J from Gowanda Electronics is a RF Inductor with Inductance 3.9 uH, DC Resistance 0.9 Ohms, DC Current 472 mA, Self Resonant Frequency 40 MHz, Operating Temperature -55 to 125 Degree C. Tags: Ceramic Inductor, Wire Wound Inductor. More details for MLRF1812-391J can be seen below.