The **DFP252010BF-R68M** is a high-performance, surface-mount (SMD) power inductor. It is designed primarily for DC-DC converter applications where space is limited and high efficiency is required. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Meaning | Description | | :--- | :--- | :--- | | **DFP** | Series Name | Metal alloy core power inductor series | | **252010** | Case Size | Dimensions: 2.5mm x 2.0mm x 1.0mm | | **BF** | Internal Code | Material or design specific identifier | | **R68** | Inductance | 0.68 $\mu$H | | **M** | Tolerance | $\pm$20% | --- ### 2. Key Technical Specifications These parts are characterized by their "Metal Alloy" construction, which allows for better saturation characteristics compared to traditional ferrite cores. * **Inductance:** 0.68 $\mu$H * **DC Resistance (DCR):** Low resistance (typically in the range of 21-27 m$\Omega$) to minimize power loss. * **Rated Current (Isat):** The current at which inductance drops by a specific percentage (usually 30%). Typically around 4.0A - 5.5A for this size. * **Rated Current (Itemp):** The current that causes a 40°C temperature rise. Typically around 3.5A - 4.5A. * **Operating Temperature:** Generally rated for -40°C to +125°C. --- ### 3. Core Material and Construction Unlike standard ferrite inductors, the **Metal Alloy core** offers several advantages: 1. **Soft Saturation:** The inductance drops gradually as current increases, rather than dropping off sharply. This prevents sudden circuit failures during current spikes. 2. **Magnetic Shielding:** The molded construction provides inherent magnetic shielding, reducing Electromagnetic Interference (EMI) with neighboring components. 3. **High Current Density:** It can handle higher currents in a smaller physical footprint than ferrite equivalents. --- ### 4. Typical Applications This component is commonly found in compact electronic devices including: * **Smartphones & Tablets:** For CPU/GPU power rails. * **Wearables:** Due to its low profile (1.0mm height). * **SSD/Storage:** DC-DC conversion in high-speed data drives. * **Portable Medical Devices:** Where high efficiency and small size are critical. --- ### 5. Footprint (Land Pattern) The physical footprint on the PCB should accommodate the 2.5mm x 2.0mm body. ```markdown Recommended Pad Dimensions (Approximate): - Pad Width: 2.0 mm - Pad Length: 0.85 mm - Space Between Pads: 0.8 mm ```