A multilayer power inductor is a type of inductor that is designed to handle low currents and power levels in electronic circuits. It is constructed by stacking multiple layers of flat coils, typically made of Ag or other conductive materials, on top of each other. Each layer is separated by an insulating layer to prevent electrical contact between the coils.

The use of multiple layers allows for a higher inductance value in a smaller form factor compared to a single-layer inductor. This is because the magnetic field created by each layer adds up, resulting in a stronger overall magnetic field. Additionally, the multiple layers can handle higher currents because they provide more surface area for heat dissipation, reducing the risk of overheating.

Multilayer power inductors are commonly used in a variety of electronic applications, including power supplies, DC-DC converters, voltage regulators, and high-frequency filters. They offer advantages such as high efficiency, low resistance, and high reliability. The specific design and specifications of a multilayer power inductor can vary depending on the application requirements, such as inductance value, current capacity, and frequency range.