Power inductor is a passive electronic component that stores energy in a magnetic field when electric current flows through it, used for filtering, energy storage, and power conversion in power management circuits.
| Parameter | Typical range | Notes & selection driver |
|---|---|---|
| Tolerance | ±10% to ±20% | |
| Inductance | 1μH to 1000μH | |
| DC Resistance | 1mΩ to 100mΩ | |
| Current Rating | 1A to 100A | |
| Saturation Current | 2A to 150A | |
| Operating Temperature | -40°C to +125°C | |
| Self Resonant Frequency | 1MHz to 50MHz |
Ranges are indicative industry figures for RFQ preparation, not a supplier commitment. Confirm every value and standard with the legal manufacturer before ordering.
This component is used in the following industrial products
A specialized electronic circuit that regulates, distributes, and controls power supply within the Digital Audio Signal Processor Module.
Electronic circuit that converts input power to the required output voltage and current for USB charging.
A practical evidence checklist for RFQ preparation and supplier evaluation.
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6 companies list this product among what they make. Company figures are quoted from each company's own website; every card states where the relationship came from.
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Power inductors are designed to handle high currents (typically >1A) and store substantial magnetic energy, with lower DC resistance and higher saturation current ratings. Signal inductors handle smaller currents (<1A) and prioritize precise inductance values and quality factors for filtering and tuning applications.
Key selection parameters include required inductance value, maximum DC current (consider both RMS and peak currents), saturation current rating, DC resistance (affects efficiency), operating frequency range, physical size constraints, and temperature requirements. Always ensure the inductor's saturation current exceeds your application's peak current.
Overheating typically results from excessive current exceeding the inductor's rating, high DC resistance causing I²R losses, core losses at high frequencies, poor thermal management, or operating beyond specified temperature ranges. Proper derating and thermal design are essential.
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