The **DR1050-8R2-R** is a high-performance, shielded power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the DR series, which is designed for high power density and efficiency in a compact surface-mount package. --- ### ## Technical Specifications The following table highlights the key electrical and physical parameters of the component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 8.2 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 0.0216 Ω (21.6 mΩ) Typical | | **Rated Current (Irms)** | 4.91 A | | **Saturation Current (Isat)** | 5.56 A | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | | **Dimensions (LxWxH)** | 10.5mm x 10.3mm x 5.0mm | --- ### ## Core Features and Benefits 1. **Magnetic Shielding:** The component is shielded, which minimizes Electromagnetic Interference (EMI). This is critical for noise-sensitive circuits and high-density PCB layouts. 2. **Ferrite Core Material:** It uses a high-permeability ferrite core, ensuring low core losses at high switching frequencies. 3. **High Power Density:** The DR1050 series is engineered to handle high current relative to its small footprint (approx. 10x10 mm). 4. **Durability:** It is RoHS compliant and features a rugged construction suitable for automated assembly. --- ### ## Common Applications The DR1050-8R2-R is primarily used in power management circuits where energy storage and filtering are required: * **DC-DC Converters:** Buck (step-down), Boost (step-up), and SEPIC topologies. * **Voltage Regulator Modules (VRMs):** Used in servers and desktop computers to provide stable power to CPUs. * **Industrial Electronics:** Used in motor controllers and LED lighting drivers. * **Consumer Electronics:** Found in laptops, gaming consoles, and telecommunications equipment. --- ### ## Deciphering the Part Number * **DR:** Series Name (Drum Core) * **1050:** Physical Size (10.5mm width/length, 5.0mm height) * **8R2:** Inductance Value (8.2 microhenries; 'R' acts as the decimal point) * **-R:** RoHS Compliant / Lead-free