The **M5VF2-54-R** is a high-performance, high-reliability surface-mount (SMD) power inductor typically manufactured by **Coiltronics** (a brand of Eaton). It belongs to the **M5** series, which is designed for high-power density and efficiency in a compact footprint. --- ## 1. Technical Specifications The part number follows a specific nomenclature. Below are the primary electronic characteristics: | Feature | Specification | | :--- | :--- | | **Inductance** | 5.4 µH (indicated by the "54" in the part number) | | **Tolerance** | ±20% | | **DCR (Direct Current Resistance)** | Typically ~15.5 mΩ (Max) | | **Isat (Saturation Current)** | ~8.0 A to 9.0 A (Value where inductance drops 20-30%) | | **Irms (Rated Current)** | ~7.0 A (Based on temperature rise) | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount Device (SMD/SMT) | --- ## 2. Construction and Design The M5VF2 series is engineered for harsh environments and high-frequency applications: * **Shielding:** It is a **magnetically shielded** inductor. This minimizes Electromagnetic Interference (EMI), making it suitable for densely packed PCBs where components are sensitive to noise. * **Core Material:** Uses a high-frequency ferrite core that offers low core losses. * **Termination:** Features robust solder pads designed to withstand thermal cycling and vibration. --- ## 3. Key Applications Because of its high current rating and compact size, the M5VF2-54-R is commonly found in: 1. **DC-DC Converters:** Used as the energy storage element in buck, boost, or buck-boost regulators. 2. **Voltage Regulator Modules (VRM):** Found in computing and server environments. 3. **Industrial Electronics:** Used in power supplies for automation and control systems. 4. **Telecommunications:** Integrated into base station power modules due to its thermal stability. --- ## 4. Typical Footprint (Dimensions) While exact dimensions can vary slightly by revision, the "M5" series typically follows a standard footprint: * **Length:** ~12.5 mm * **Width:** ~12.5 mm * **Height:** ~6.0 mm (The "VF" variant denotes a specific height profile). ---