The **DR1050-560-R** is a specific model of a surface-mount (SMT) power inductor manufactured by **Eaton (formerly Coiltronics)**. It belongs to the DR Series, which is known for high power density and magnetic shielding. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Parameter | Value | Details | | :--- | :--- | :--- | | **Inductance** | 56 µH | The nominal inductance at 100 kHz. | | **Tolerance** | ±20% | Standard deviation allowed from the nominal value. | | **DC Resistance (DCR)** | 0.165 Ω (Max) | The internal resistance of the copper winding. | | **Rated Current ($I_{rms}$)** | 1.48 A | The current causing a 40°C temperature rise. | | **Saturation Current ($I_{sat}$)** | 1.68 A | Current at which inductance drops by 30%. | | **Shielding** | Magnetically Shielded | Reduces Electromagnetic Interference (EMI). | --- ### 2. Physical Dimensions The "1050" in the part number refers to the physical size of the component (approximately 10mm x 10mm x 5mm). * **Length:** 10.5 mm (Max) * **Width:** 10.3 mm (Max) * **Height:** 5.0 mm (Max) * **Mounting Type:** Surface Mount Device (SMD/SMT) --- ### 3. Key Features & Construction * **Ferrite Core:** Uses a ferrite drum core with a sleeve to provide magnetic shielding, making it ideal for high-density boards where components are close together. * **Low Core Loss:** Optimized for high-frequency switch-mode power supplies. * **Lead-Free:** The "-R" suffix indicates that the part is **RoHS compliant**. * **Operating Temperature:** Typically rated for **-40°C to +125°C**, suitable for industrial and some automotive applications. --- ### 4. Common Applications The DR1050-560-R is primarily used as an energy storage element or a filter in the following circuits: 1. **DC-DC Converters:** Buck (step-down), Boost (step-up), and SEPIC topologies. 2. **Power Supplies:** Used in laptops, LED drivers, and distributed power systems. 3. **Filtering:** Used in output stages to smooth out ripple current and reduce noise. ---