The **1072AS-R47N** is a specific type of surface-mount electronic component, specifically a **Fixed Inductor** (Power Inductor). It belongs to the **DEM2810C** series, originally manufactured by **Murata** (formerly TOKO). --- ## 1. Technical Specifications The part number defines its electrical behavior and physical properties. Below is a breakdown of its core specifications: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±30% | | **DC Resistance (DCR)** | 40 mΩ (Max) | | **Rated Current (Isat)** | ~3.10 A (Saturation current) | | **Rated Current (Itemp)** | ~2.50 A (Temperature rise current) | | **Shielding** | Magnetic Shielded | | **Package / Case** | 1110 (2.8mm x 3.0mm) | | **Operating Temperature** | -40°C to +85°C | --- ## 2. Part Number Deciphering To understand the nomenclature used by Murata/Toko for this series: * **1072AS**: Refers to the series design and physical dimensions (approx. 2.8 x 3.0 x 1.0 mm). * **R47**: Represents the inductance value. "R" acts as the decimal point (R47 = **0.47 µH**). * **N**: Indicates the tolerance code (N usually signifies **±30%**). --- ## 3. Key Features & Applications ### Features * **Low Profile:** With a height of only 1.0mm, it is ideal for thin electronic devices. * **Magnetic Shielding:** Reduces electromagnetic interference (EMI), preventing the inductor from affecting nearby components. * **High Current Handling:** Despite its small footprint, it can handle relatively high saturation currents. ### Common Applications 1. **DC-DC Converters:** Used for voltage regulation in smartphones and tablets. 2. **Power Management Modules (PMIC):** Found in portable consumer electronics. 3. **HDD/SSD Drives:** Used in the power circuitry of storage devices. 4. **Wearables:** Ideal for smartwatches due to the small 1110 footprint. --- ## 4. Soldering & Handling This component is designed for **Reflow Soldering** and is typically provided on **Tape & Reel** (T&R) for automated Pick-and-Place assembly. ```markdown Note: When replacing this part, ensure the "Isat" (Saturation Current) of the replacement is equal to or higher than 3.1A to prevent the core from saturating and causing circuit instability. ```