## DR124-180-R: High Power Density Inductor The **DR124-180-R** is a shielded, surface-mount (SMD) power inductor part of the **DR Series** manufactured by **Eaton (formerly Coiltronics)**. It is designed for high-efficiency power conversion applications. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 18.0 µH | | **Tolerance** | ±20% | | **Rated Current (Irms)** | 4.32 Amps | | **Saturation Current (Isat)** | 5.20 Amps | | **DC Resistance (DCR)** | 0.0294 Ω (Max) | | **Operating Temperature** | -40°C to +125°C | | **Core Material** | Ferrite | | **Shielding** | Magnetically Shielded | --- ### 2. Physical Dimensions The "124" in the part number signifies the physical footprint size (approximately 12.5mm x 12.5mm x 4.5mm). * **Length:** 12.5 mm * **Width:** 12.5 mm * **Height:** 4.5 mm (Max) --- ### 3. Core Features & Benefits * **Magnetic Shielding:** The ferrite drum and ring core construction minimizes Electromagnetic Interference (EMI), making it suitable for noise-sensitive environments. * **High Power Density:** Provides high current handling capabilities relative to its small physical footprint. * **Low DCR:** The low DC resistance ensures minimal power loss and reduced heat generation during operation. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets RoHS environmental standards. --- ### 4. Typical Applications The DR124-180-R is commonly used in DC-DC converters and power supply modules. Specific use cases include: 1. **Buck/Boost Converters:** Used for energy storage in voltage regulation. 2. **Computer Peripherals:** Found in laptops, servers, and storage drives. 3. **Industrial Electronics:** Used in battery-powered equipment and distributed power systems. 4. **Consumer Electronics:** Video game consoles and LED lighting drivers. --- ### 5. Part Number Breakdown ```text DR 124 - 180 - R | | | | Series Size Value RoHS Compliant (18µH) ```