The **DRAP124-2R2-R** is a high-power, shielded inductor part of the DRAP series manufactured by Eaton (formerly Bussmann/Coiltronics). It is specifically designed for high-power density applications where electromagnetic interference (EMI) must be minimized. ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 2.2 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 14.8 Amperes | | **Saturation Current (Isat)** | 21.0 Amperes | | **DC Resistance (DCR)** | 4.3 mΩ (Typical) | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD/SMT) | --- ### 2. Breakdown of the Part Number The part number follows a specific nomenclature that describes its physical and electrical characteristics: * **DRAP**: Automotive Grade, High Power Density, Shielded Drum Core Inductor. * **124**: Refers to the physical dimensions (Approx. 12.5mm x 12.5mm x 4.5mm). * **2R2**: Represents the inductance value. The "R" acts as a decimal point (2.2 µH). * **R**: Indicates that the product is RoHS compliant. --- ### 3. Core Features and Benefits * **Magnetic Shielding:** The inductor is shielded, meaning it contains the magnetic field within the component. This reduces EMI and prevents interference with neighboring components on the PCB. * **AEC-Q200 Qualified:** This specific series is often used in automotive applications because it meets rigorous stress-test qualifications for temperature and mechanical shock. * **High Current Handling:** With a saturation current of 21A, it can handle significant power spikes without the inductance dropping off sharply. * **Low DCR:** The low direct current resistance ensures minimal power loss through heat, increasing the overall efficiency of the power supply. --- ### 4. Common Applications The DRAP124-2R2-R is typically found in the following circuits: 1. **DC-DC Converters:** Used as energy storage elements in buck, boost, or SEPIC converters. 2. **Automotive Electronics:** Powering infotainment systems, LED lighting modules, and Engine Control Units (ECUs). 3. **Industrial Power Supplies:** Used in battery-powered equipment and high-current distributed power systems. 4. **Computer Hardware:** Voltage Regulator Modules (VRMs) for processors and GPUs. ---