The **47DR-1028-R** is a specific part number belonging to a series of **Inductors**, specifically high-current power inductors typically used in DC-DC converters and power supplies. Below is a detailed breakdown of the electronic specifications and characteristics of this component. --- ### 1. Technical Specifications The part number follows a standard nomenclature for power inductors. Here are the typical parameters associated with this component type: | Parameter | Estimated Value / Specification | | :--- | :--- | | **Component Type** | Shielded Power Inductor | | **Inductance** | 2.8 µH (indicated by the '28' suffix in many series) | | **Tolerance** | ±20% | | **DCR (Direct Current Resistance)** | Low (typically < 10 mΩ) | | **Mounting Type** | Surface Mount (SMD) | | **Shielding** | Magnetically Shielded (Low EMI) | --- ### 2. Physical Characteristics The "DR" designation often refers to a **Drum Core** construction with a plastic or metal shielding sleeve. * **Construction:** Ferrite core material which provides high saturation currents. * **Shielding:** The "R" usually indicates compliance with **RoHS** (Restriction of Hazardous Substances) standards and signifies a shielded design to prevent electromagnetic interference with surrounding components. * **Footprint:** These are typically compact but tall (3D structure) to handle significant energy storage. --- ### 3. Common Applications This part is designed for power management circuits where high efficiency and small size are required: 1. **Voltage Regulators:** Used in buck, boost, and buck-boost converters. 2. **Computing:** Powering CPUs, GPUs, and memory rails on motherboards. 3. **Industrial:** DC-DC conversion for sensors and controllers. 4. **Consumer Electronics:** Power stages for high-definition displays or gaming consoles. --- ### 4. How to Read the Code While manufacturers vary slightly, the code breaks down as follows: * **47:** Often refers to the series family (Physical size/Standard). * **DR:** Designates the core style (Drum Core / Shielded). * **1028:** Usually represents dimensions (e.g., 10mm x 10mm x 2.8mm) or a specific inductance value mapping. * **R:** Indicates RoHS compliance. ---