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SMD power inductors are passive electronic components used to store energy in a magnetic field when electrical current flows through them. They are typically constructed from a coil of wire wound around a magnetic core, which can be made from ferrite or other magnetic materials. These inductors are commonly used in power supply circuits, filtering applications, and energy storage systems due to their ability to handle high currents and provide stable inductance values.
| Inductance range | 1 µH to 1000 µH |
| Current rating | Up to 100 A |
| DC resistance | Typically 1 mΩ to 100 mΩ |
| Temperature range | -40°C to +125°C |
| Core material | Ferrite or powdered iron |
| Package sizes | 0201 to 2512 |
When selecting an SMD power inductor, consider the required inductance value, current rating, and DC resistance to ensure it meets your circuit's specifications. Additionally, check the temperature range and ensure that the core material is suitable for your application. It's also important to specify any necessary certifications and tolerances when requesting a quote, as these can impact performance and compliance with industry standards.
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SMD inductors are designed for surface mounting on PCBs, while through-hole inductors require holes in the PCB for installation.
Select an inductance value based on your circuit requirements, such as filtering or energy storage needs.
Yes, many SMD power inductors are rated for operation in temperatures up to 125°C.
They are widely used in power supplies, DC-DC converters, and automotive electronics.
Common certifications include RoHS compliance and ISO standards, but specific certifications may vary by manufacturer.
Lower DC resistance typically results in higher efficiency and less heat generation during operation.