Based on the part number **47LAC-101BG-R**, this component is a **Surface Mount Device (SMD) Power Inductor**. It is commonly used in power management circuits for DC-DC converters, mobile devices, and telecommunications equipment. Below is a breakdown of the technical specifications and characteristics typically associated with this specific series. ### 1. Part Number Breakdown The nomenclature usually follows this structure: | Segment | Identification | Description | | :--- | :--- | :--- | | **47LAC** | Series Prefix | High-current, low-profile power inductor series. | | **101** | Inductance Code | 10 followed by 1 zero = **100 $\mu$H**. | | **B/G** | Tolerance/Material | Often indicates tolerance (e.g., ±20%) or internal construction. | | **-R** | RoHS/Packaging | Indicates Lead-Free (RoHS compliant) and Tape & Reel packaging. | --- ### 2. Technical Specifications While exact values can vary slightly by manufacturer (such as Sumida or similar vendors), the **101** series usually adheres to these parameters: | Parameter | Typical Value | | :--- | :--- | | **Inductance** | 100 $\mu$H | | **Tolerance** | ±10% or ±20% | | **DC Resistance (DCR)** | ~0.5Ω to 1.2Ω (Max) | | **Rated Current (Isat)** | ~0.3A to 1.2A (depending on physical size) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded (reduces EMI) | --- ### 3. Key Features * **Low Profile:** Designed for compact electronics where vertical space is limited. * **Magnetic Shielding:** The construction minimizes electromagnetic interference (EMI) with surrounding components. * **High Saturation:** Uses a ferrite core material that allows for high saturation currents relative to its size. * **Surface Mount (SMD):** Designed for automated pick-and-place assembly. --- ### 4. Common Applications * **DC-DC Converters:** Used for energy storage and smoothing in voltage regulation. * **Consumer Electronics:** Power supplies for laptops, tablets, and smartphones. * **LED Drivers:** Providing constant current for lighting applications. * **Filters:** Used in LC filters to block high-frequency noise in power lines. ---