The **XFSMC3-R68M** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converter applications. Below is a detailed breakdown of its electronic characteristics and technical specifications. --- ## 1. Technical Specifications The part number follows a standard naming convention for magnetic components, typically indicating the series and inductance value. | Parameter | Specification (Typical) | | :--- | :--- | | **Inductance** | 0.68 µH (indicated by "R68") | | **Tolerance** | ±20% (indicated by "M") | | **Component Type** | Shielded Power Inductor | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **Core Material** | Composite Iron Powder or Ferrite | | **Operating Temperature** | -40°C to +125°C (includes self-heating) | --- ## 2. Key Features * **Magnetic Shielding:** The "S" in the series often implies a shielded construction, which minimizes Electromagnetic Interference (EMI) with surrounding components. * **High Saturation Current:** Designed to handle high peak currents without the inductance dropping significantly (saturation). * **Low DC Resistance (DCR):** Utilizes thick copper windings to minimize power loss and heat generation during operation. * **Compact Footprint:** Part of the "MC" (Molded Chip) family, providing a high power-to-size ratio. --- ## 3. Application Use-Cases This specific inductance value (0.68 µH) is highly common in high-frequency switching regulators. 1. **Point of Load (POL) Converters:** Used in CPU, GPU, and FPGA power supplies where high current and low voltage are required. 2. **Smartphones & Tablets:** Ideal for slim profiles due to its molded construction. 3. **Battery Powered Devices:** Low DCR helps in extending battery life by improving conversion efficiency. 4. **Automotive Electronics:** Used in ADAS and infotainment systems where thermal stability is critical. --- ## 4. Part Number Breakdown Understanding the nomenclature helps in selecting equivalents: * **XF:** Manufacturer code (often associated with XFMRS or similar magnetic specialists). * **SMC3:** The physical package size and series (e.g., 3mm x 3mm or similar footprint). * **R68:** The Inductance value. "R" acts as a decimal point, so $0.68$ µH. * **M:** The tolerance code, representing $\pm20\%$. ---