The **DR1050-820-R** is a high-performance, shielded power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the DR series, designed specifically for high power density and efficiency in DC-DC converter applications. --- ### 1. Technical Specifications The following table summarizes the key electrical and physical characteristics of the DR1050-820-R: | Parameter | Value | | :--- | :--- | | **Inductance** | 82 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.174 Ω (Max) | | **Rated Current (Irms)** | 1.48 A | | **Saturation Current (Isat)** | 1.62 A | | **Core Material** | Ferrite | | **Shielding** | Magnetically Shielded | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | 10.5mm x 10.3mm x 5.0mm | --- ### 2. Key Features * **Magnetically Shielded:** The drum core is enclosed in a ferrite sleeve, which minimizes Electromagnetic Interference (EMI) and protects sensitive nearby components from magnetic flux. * **High Power Density:** Provides a high inductance-to-size ratio, making it ideal for compact electronic assemblies. * **Surface Mount (SMD):** Designed for automated pick-and-place assembly. * **Low Core Loss:** The ferrite construction ensures high efficiency even at high switching frequencies. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying variations of the component: 1. **DR:** Series Name (Drum Core, Shielded). 2. **1050:** Dimensions (approx. 10mm width/length and 5.0mm height). 3. **820:** Inductance Code (82 followed by 0 zeros = **82 µH**). 4. **R:** RoHS Compliant. --- ### 4. Common Applications This inductor is typically used in power management circuits, including: * **DC-DC Converters:** Buck, boost, and SEPIC topologies. * **Computer Peripherals:** Servers, laptops, and solid-state drives. * **Industrial Electronics:** Battery-powered equipment and LED drivers. * **Consumer Electronics:** Game consoles and set-top boxes. ---