## Overview of the DR1050-2R2-R The **DR1050-2R2-R** is a high-performance, surface-mount (SMD) power inductor. It is part of the DR series manufactured by **Eaton (formerly Bussmann)**. These inductors are characterized by their shielded construction, high power density, and low profile. --- ### 1. Key Technical Specifications The model number provides specific data regarding its electrical characteristics: | Parameter | Value | | :--- | :--- | | **Inductance** | 2.2 µH | | **Tolerance** | ±20% | | **Rated Current (Irms)** | 6.10 Amps | | **Saturation Current (Isat)** | 9.05 Amps | | **DC Resistance (DCR)** | 11.2 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### 2. Physical Dimensions The "1050" in the part number refers to the physical size of the component (approximately 10mm x 10mm x 5.0mm). | Dimension | Measurement (mm) | | :--- | :--- | | **Length** | 10.3 mm (Max) | | **Width** | 10.5 mm (Max) | | **Height** | 5.0 mm (Max) | --- ### 3. Core Features and Benefits * **Shielded Construction:** The inductor is enclosed in a ferrite core, which minimizes **Electromagnetic Interference (EMI)**. This is crucial for densely packed circuit boards. * **High Efficiency:** With a very low DC resistance (DCR), it minimizes power loss through heat, making it ideal for high-efficiency power supplies. * **Ferrite Core Material:** Provides excellent saturation characteristics, allowing the part to handle high peak currents without the inductance dropping significantly. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets environmental safety standards. --- ### 4. Common Applications The DR1050-2R2-R is typically used in power management circuits where high current and low EMI are required: 1. **DC-DC Converters:** Used as energy storage elements in buck, boost, or buck-boost regulators. 2. **Computing:** Voltage Regulator Modules (VRMs) for laptops and desktop motherboards. 3. **Consumer Electronics:** Powering high-draw components in gaming consoles or smart home hubs. 4. **Industrial:** Power supplies for LED lighting and motor control circuits. --- ### 5. Part Number Breakdown ```text DR 10 50 - 2R2 - R | | | | | | | | | +-- RoHS Compliant | | | +-------- Inductance Value (2R2 = 2.2 µH) | | +------------- Height (approx 5.0 mm) | +---------------- Width (approx 10 mm) +------------------- Series Name (Drum Core) ```