The **HCF1007-R56-R** is a high-current, surface-mount power inductor manufactured by Eaton (formerly Cooper Bussmann). It belongs to the HCF1007 series, which is characterized by its high power density and ferrite core construction. --- ### 1. Key Technical Specifications The part number itself contains encoded information regarding its size and electrical properties. | Parameter | Value | | :--- | :--- | | **Inductance** | 0.56 µH (indicated by "R56") | | **Tolerance** | ±20% | | **Irms (Heating Current)** | ~32 Amps (Current causing 40°C rise) | | **Isat (Saturation Current)** | ~55 Amps (Current causing 20% drop in L) | | **DCR (DC Resistance)** | ~0.85 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Characteristics The "1007" in the part number refers to the physical dimensions of the component. * **Footprint:** Approximately 10.3 mm x 7.0 mm. * **Height:** 6.4 mm maximum. * **Core Material:** Ferrite. This material is chosen for low core losses at high frequencies. * **Construction:** It features a robust, flat-wire design that minimizes DC resistance (DCR), which is critical for efficiency in high-current applications. --- ### 3. Applications and Usage This specific inductor is designed for high-frequency DC-DC converters and voltage regulator modules (VRMs). * **Multi-phase Buck Converters:** Used in CPU/GPU power supplies. * **Server & Networking:** High-current power distribution units. * **Industrial Power:** High-efficiency switching regulators. * **Battery Powered Systems:** Where low heat dissipation (due to low DCR) is essential. --- ### 4. Part Number Breakdown Understanding the nomenclature: | Segment | Meaning | | :--- | :--- | | **HCF** | High Current Ferrite series name | | **1007** | Size Code (10mm x 7mm footprint) | | **-R56** | Inductance value (R = decimal point; 0.56 µH) | | **-R** | RoHS Compliant / Lead-free | ---