The ER5025S-513J from Gowanda Electronics is a RF Inductor with Inductance 510 uH, DC Resistance 10.5 Ohms, DC Current 0.04 to 0.11 A, Self Resonant Frequency 4.7 MHz, Operating Temperature -55 to 105 Degree C. Tags: Wire Wound Inductor. More details for ER5025S-513J can be seen below.