The ER5025S-304J from Gowanda Electronics is a RF Inductor with Inductance 3000 uH, DC Resistance 53 Ohms, DC Current 0.019 to 0.045 A, Self Resonant Frequency 2 MHz, Operating Temperature -55 to 105 Degree C. Tags: Wire Wound Inductor. More details for ER5025S-304J can be seen below.