The MCR18EZHJ273 part is a 4.7uH high-current, high-efficiency inductor made by ROHM. This part is designed for use in a wide variety of applications, including power supplies and power converters. It features an excellent SRF of 122MHz, low DCR of 0.75mohm, and high IR of 20A. This part is an ideal choice for use in high current, high efficiency switching applications.