The XEL5030-421ME from Coilcraft is a RF Inductor with Inductance 0.42 uH, DC Resistance 0.03 to 0.0036 Ohms, DC Current 18 to 25 A, Self Resonant Frequency 84 MHz, Operating Temperature -40 to 125 Degree C. Tags: Chip Inductor. More details for XEL5030-421ME can be seen below.