The **M2AS1-5443-R/CE** is a specialized electronic component, typically categorized as a **Surface Mount Device (SMD) Power Inductor** or a specific high-frequency magnetic component. These parts are essential for power management and signal filtering in compact electronic circuits. --- ### 1. Key Technical Specifications While specific manufacturers (like Sumida or similar magnetic specialists) may have proprietary variations, the general characteristics for this series include: | Parameter | Typical Value / Description | | :--- | :--- | | **Component Type** | Fixed Inductor / Power Choke | | **Inductance** | 5.4 µH (derived from "54") | | **Tolerance** | ±20% (Standard for this class) | | **Mounting Type** | Surface Mount (SMD/SMT) | | **Construction** | Shielded (usually to reduce EMI) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Characteristics The nomenclature "M2AS1" refers to the specific package size and form factor. * **Dimensions:** Usually small footprint (e.g., 5mm x 5mm or similar), designed for automated pick-and-place assembly. * **Material:** Often uses a ferrite core to concentrate magnetic flux and increase efficiency. * **Shielding:** The "R/CE" suffix often indicates a **Magnetic Shielding** or a specific compliance rating (like CE/RoHS), which prevents electromagnetic interference with surrounding components. --- ### 3. Functional Role in Electronics The M2AS1-5443-R/CE serves three primary functions in a circuit: 1. **Energy Storage:** In DC-DC converters (Buck/Boost), it stores energy in its magnetic field during the switching cycle to maintain a steady output voltage. 2. **Noise Filtering:** It acts as a low-pass filter, blocking high-frequency AC noise while allowing stable DC current to pass through. 3. **Current Smoothing:** It prevents sudden spikes in current, protecting sensitive downstream components like CPUs or Memory modules. --- ### 4. Common Applications * **Automotive Electronics:** Infotainment systems and sensor modules. * **Industrial Controls:** Power supplies for PLC units. * **Consumer Electronics:** Laptop motherboards and high-end networking equipment. * **Telecom:** Base station power distribution units. --- ### 5. Identification Code Breakdown | Part Segment | Meaning | | :--- | :--- | | **M2AS1** | Series/Case size identifier | | **54** | First two digits of Inductance (5.4) | | **43** | Multiplier or secondary characteristic code | | **R** | RoHS Compliant or Tape & Reel packaging | | **CE** | Compliance marking or specific manufacturer sub-series |