Fixed inductors, also known as non-adjustable inductors, are passive components whose inductance value cannot be adjusted by manual operation and other methods. They are made up of permanent magnetic material and winding. Once the magnetic material is selected, and the number, thickness and shape of the windings are fixed, the inductance of the choke coil is fixed and cannot be changed any more.Fixed inductors can be divided into several categories based on different parameters and performance; a very useful type for higher power applications is IM04SH100K. This inductor is specially designed for high current operation, and is suitable for the most demanding applications.The application fields of IM04SH100K inductors are mainly in Switch Mode Power Supplies, DC/DC Converters, high current buck converters, EMI suppression, and other high voltage or high current applications. They are often used in automotive and industrial equipment due to their high power density and excellent thermal performance.The IM04SH100K is an insulated type inductor, with its core material consisting of a ferrite rod, or multiple rod cores, encased in a plastic core. This inductor is rated for currents of up to 100A and operates in temperatures of between -40°C to +125°C. The working principle of the IM04SH100K is fairly simple. When electricity is passed through the inductor, an electromagnetic field is generated which opposes the current flow and generates a back EMF. This back EMF is used to reduce voltage fluctuations and lightning protection, and can also be used to provide impedance matching or signal filtering for sensitive circuits.In summary, the IM04SH100K inductor is a high power, insulated type product that is ideal for high current, high voltage applications. With its excellent thermal performance, it is suitable for use in a wide range of applications in both automotive and industrial environments.