The MPA4030S1R0M with Power Inductors SMD,4x4x3mm RoHS manufactured by COILMX is an electronic component that combines a coil and a magnet in a single package. It is an inductor, which functions as a reactive element to alternate electrical current and generate a magnetic field so that a signal can be passed between two points. This inductor is RoHS (Restriction of Hazardous Substances) compliant, which means it is free from hazardous materials such as lead, mercury, and cadmium. It also has a compact size of 4x4x3mm, making it an ideal choice for portable electronics. Additionally, this power inductor offers an extremely low core loss, high efficiency and high current capabilities.