The part number **47LM-161YR-R** refers to a high-performance, shielded power inductor typically manufactured by companies like **Sumida** or similar specialty magnetic component providers. These components are designed for high-frequency DC-DC conversion and power management. --- ### Technical Specifications Based on the standard nomenclature for this series, here are the general characteristics: | Property | Typical Value / Description | | :--- | :--- | | **Component Type** | Shielded Surface Mount (SMD) Power Inductor | | **Inductance** | 160 µH (Indicated by "161") | | **Tolerance** | ±20% (Commonly represented by 'M') | | **Construction** | Ferrite Core with Magnetic Shielding | | **Mounting Type** | Surface Mount Device (SMD/SMT) | | **RoHS Status** | Compliant (Indicated by the "-R" suffix) | --- ### Key Features 1. **Magnetic Shielding:** The "LM" series usually features a closed magnetic circuit. This minimizes Electromagnetic Interference (EMI), making it suitable for high-density boards where components are packed closely together. 2. **High Reliability:** Designed to handle significant current ripples without saturating the core prematurely. 3. **Low DCR (DC Resistance):** Engineered to minimize power loss as heat, improving the overall efficiency of the power supply. 4. **Compact Footprint:** Part of a low-profile family designed for modern portable electronics and automotive modules. --- ### Typical Applications These inductors are commonly found in circuits requiring stable voltage regulation: * **DC-DC Converters:** Used as energy storage elements in buck, boost, or buck-boost converters. * **Consumer Electronics:** Powering CPUs or GPUs in laptops and tablets. * **Automotive Systems:** Found in Infotainment or Advanced Driver Assistance Systems (ADAS) due to their shielding. * **LED Drivers:** Providing steady current to high-brightness LED arrays. --- ### Part Number Breakdown The code can be decoded as follows: * **47:** Series/Frame size identifier. * **LM:** Low-profile, Magnetic shielded type. * **161:** Inductance value code ($16 \times 10^1 = 160$ µH). * **Y:** Tolerance or Temperature characteristic code. * **R:** Tape and Reel packaging / RoHS Compliance.