## Technical Overview of DR1050-6R8-R The **DR1050-6R8-R** is a high-performance, shielded power inductor designed by Eaton (formerly Bussmann). It belongs to the DR series, which is specifically engineered for high power density and efficiency in a compact surface-mount (SMT) package. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 6.8 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.0243 Ω (Max) | | **Rated Current ($I_{rms}$)** | 4.46 A | | **Saturation Current ($I_{sat}$)** | 5.30 A | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetic Shielding | | **Package Size** | 10.5mm x 10.3mm x 5.0mm | --- ### 2. Physical Construction & Features * **Magnetic Shielding:** The component is shielded, which minimizes Electromagnetic Interference (EMI). This is critical for densely packed circuit boards where noise can interfere with nearby sensitive components. * **Ferrite Core:** Utilizes a high-performance ferrite core material that provides high efficiency and low core losses at high frequencies. * **Surface Mount Design (SMD):** The "1050" footprint (approx. 10mm x 10mm) is standard for medium-to-high power DC-DC converters. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets RoHS environmental standards. --- ### 3. Functional Performance #### Saturation Current ($I_{sat}$) vs. RMS Current ($I_{rms}$) * **$I_{sat}$ (5.30 A):** This is the peak current at which the inductance drops by a specified percentage (usually 30%). Beyond this point, the inductor loses its ability to store energy effectively. * **$I_{rms}$ (4.46 A):** This represents the continuous DC current that will cause the component's temperature to rise by approximately 40°C above ambient. #### Application Use Cases This specific inductor is commonly used in: 1. **Buck/Boost Converters:** Providing energy storage for voltage regulation. 2. **Computer Peripherals:** Powering hard drives, graphics cards, and motherboards. 3. **Industrial Electronics:** Used in distributed power systems and battery-powered equipment. 4. **LED Drivers:** Smooths current flow for high-brightness lighting applications. --- ### 4. Part Number Breakdown ```text DR 1050 - 6R8 - R | | | | | | | └── RoHS Compliant | | └────── Inductance Value (6.8 µH: "R" acts as decimal) | └───────────── Size Code (10.5mm x 5.0mm height) └───────────────── Series Name (Drum Core) ```