The **XFHCL2009-R30M** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and high-current power modules. It belongs to the molded power inductor category, designed for low loss and high stability. ### 1. Key Technical Specifications | Parameter | Specification | Details | | :--- | :--- | :--- | | **Inductance** | 0.30 µH | Nominal inductance at 100kHz | | **Tolerance** | ±20% | Standard "M" tolerance rating | | **DCR (Direct Current Resistance)** | ~0.8 - 1.2 mΩ | Very low resistance to minimize heat | | **Saturation Current (Isat)** | ~30A - 40A | Current at which inductance drops by 30% | | **Heating Current (Irms)** | ~25A - 35A | Current causing a 40°C temperature rise | | **Case Size** | 2009 (Metric) | Approx. 5.0 x 5.0 mm footprint | --- ### 2. Internal Construction and Material The "HCL" series typically utilizes a **Metal Alloy Powder** core. Unlike traditional ferrite drum cores, this molded construction offers several advantages: * **Soft Saturation:** The inductance drops gradually as current increases, rather than a sharp "cliff" drop, preventing sudden circuit failure. * **Magnetic Shielding:** The molded body acts as a natural shield, reducing Electromagnetic Interference (EMI) with neighboring components. * **High Power Density:** Large wire gauges are used inside a compact footprint to handle high current. --- ### 3. Common Applications Due to its low DCR and high saturation current, this part is found in: * **Voltage Regulator Modules (VRMs):** Powering CPUs and GPUs in laptops or servers. * **DC-DC Converters:** Point-of-Load (POL) power supplies. * **Battery Powered Devices:** Where high efficiency is required to extend battery life. * **Automotive Electronics:** Infotainment and ADAS systems requiring ruggedized components. --- ### 4. Part Number Breakdown (Typical XF Formats) | Segment | Meaning | | :--- | :--- | | **XF** | Manufacturer prefix (e.g., XFMRS or equivalent) | | **HCL** | Series code (High Current, Low Profile) | | **2009** | Physical dimensions (approx. 5.0mm x 5.0mm) | | **R30** | Inductance value (R30 = 0.30 µH) | | **M** | Tolerance (M = ±20%) |