The **XFHCL-R68** is a high-current, shielded surface-mount (SMD) power inductor. It is commonly used in DC-DC converter applications where high efficiency and low electromagnetic interference (EMI) are required. ### 1. Key Technical Specifications Based on the standard nomenclature for the "R68" series of power inductors, here are the primary technical characteristics: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.68 µH (Microhenries) | | **Tolerance** | Usually ±20% (M) | | **Core Material** | Carbonyl Iron or Metal Alloy Powder | | **Shielding** | Magnetically Shielded (Low EMI) | | **Operating Temperature** | -40°C to +125°C (including self-heating) | | **Package Type** | SMD (Surface Mount Device) | --- ### 2. Physical and Electrical Properties #### A. Low DC Resistance (DCR) The "R68" part is designed with a thick copper wire or a flat-wire winding. This minimizes the internal resistance, reducing heat generation and power loss during high-current operations. #### B. High Saturation Current ($I_{sat}$) Because it uses a composite metal powder core, the inductor exhibits "soft saturation." This means the inductance drops gradually rather than abruptly when the current exceeds the rated limit, protecting the circuit from sudden spikes. #### C. Magnetic Shielding The inductor is molded in a magnetic resin or metal powder. This construction encapsulates the magnetic flux, preventing the component from interfering with nearby sensitive components on the PCB. --- ### 3. Common Applications The XFHCL-R68 is typically found in the power stages of modern electronics: * **Voltage Regulator Modules (VRMs):** Found on motherboards and GPU cards. * **DC-DC Converters:** Point-of-Load (POL) converters for CPUs and FPGAs. * **Battery Powered Devices:** Used in laptops and tablets to manage power efficiently. * **Automotive Electronics:** Used in infotainment and ADAS systems (if AEC-Q200 qualified). --- ### 4. Part Number Breakdown (Generic) | Component | Meaning | | :--- | :--- | | **XF** | Manufacturer prefix (often XFMRS or similar) | | **HCL** | High Current Low-profile series | | **R68** | Inductance value (R represents the decimal: 0.68 µH) |