The **M5VF2-55-R** is a high-performance, shielded power inductor part of the **M5VF** series manufactured by **Coilmaster Electronics**. These components are primarily designed for high-current applications where space-saving and efficiency are critical. --- ### 1. Key Technical Specifications Below are the typical electrical and physical parameters for the M5VF2-55-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 5.5 µH | | **Tolerance** | ±20% | | **DCR (DC Resistance)** | ~25.0 mΩ (Max) | | **Isat (Saturation Current)** | ~5.0 A to 6.5 A (varies by specific lot) | | **Irms (Rated Current)** | ~4.5 A to 5.5 A | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetic Shielding (Low EMI) | --- ### 2. Physical Construction The "55" in the part number often refers to the physical dimensions, typically following a standard footprint for SMD (Surface Mount Device) inductors. * **Core Material:** Usually a Metal Alloy or Ferrite core designed for high saturation levels. * **Form Factor:** Low profile, square-shaped SMD package. * **Termination:** Lead-free (RoHS compliant) soldering pads. --- ### 3. Application Use Cases The M5VF2-55-R is commonly integrated into the following electronic circuits: 1. **DC-DC Converters:** Used as an energy storage element in buck (step-down) or boost (step-up) converters. 2. **Power Supplies:** Ideal for VRMs (Voltage Regulator Modules) in laptops, servers, and graphics cards. 3. **Noise Filtering:** Acting as a low-pass filter to reduce electromagnetic interference (EMI) in high-speed data lines or power rails. 4. **Portable Electronics:** Because of its shielded design, it prevents magnetic flux from interfering with nearby sensitive components like sensors or antennas. --- ### 4. Advantages * **High Efficiency:** Low DCR minimizes power loss through heat. * **Low EMI:** The shielded construction ensures that the magnetic field is contained, which is crucial for passing EMC/EMI compliance tests. * **Compactness:** High current density allows for a smaller PCB footprint compared to non-shielded wire-wound inductors.