The **XFHCL4-R80M_15** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and power management modules. Below is a detailed breakdown of its electronic specifications and characteristics. --- ### 1. Technical Specifications The part number follows a standard nomenclature for power inductors, typically representing its inductance value and physical size. | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance** | 0.80 µH (Indicated by "R80") | | **Tolerance** | ±20% (Indicated by "M") | | **DC Resistance (DCR)** | Ultra-low (Typically < 5mΩ to minimize heat) | | **Saturation Current ($I_{sat}$)** | High (designed to handle peak currents without core saturation) | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **Construction** | Shielded (to minimize Electromagnetic Interference - EMI) | --- ### 2. Key Features * **Molded Construction:** These inductors usually feature a metallic powder core molded around the coil. This provides excellent magnetic shielding and reduces acoustic noise. * **Soft Saturation:** Unlike ferrite cores that drop inductance sharply, these parts usually exhibit a "soft" saturation curve, maintaining stability during current spikes. * **Low Profile:** The "15" in the suffix often refers to the height (e.g., 1.5mm), making it suitable for thin devices like laptops or smartphones. * **High Efficiency:** Due to the low DCR, the part minimizes $I^2R$ power losses, which is critical for battery-operated devices. --- ### 3. Common Applications This specific inductor is designed for high-frequency switching environments: 1. **Voltage Regulator Modules (VRM):** Used in CPU/GPU power delivery. 2. **Point of Load (POL) Converters:** Converting higher bus voltages to low voltages for logic circuits. 3. **Consumer Electronics:** Essential in tablets, SSDs, and handheld gaming consoles where space is limited. 4. **Automotive Infotainment:** Used in power filtering for onboard displays and sensors. --- ### 4. Footprint and Layout Considerations When designing a PCB for the **XFHCL4-R80M_15**, keep the following in mind: * **Copper Pour:** Ensure thick copper traces to handle high current density. * **Thermal Vias:** Place vias near the pads to help dissipate heat into the internal PCB layers. * **EMI Shielding:** Since it is a shielded inductor, it can be placed closer to sensitive components, but keep high-speed signal lines away from the switch node.