The **HRP3822X-R82M** is a high-current, shielded power inductor typically used in automotive and industrial electronics. This part is designed for high-density power applications where low loss and high reliability are required. ### Technical Specifications The following table outlines the key electrical and physical characteristics of the HRP3822X-R82M: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (M) | | **Current Rating (Irms)** | ~25.0 A to 30.0 A (Typical) | | **Saturation Current (Isat)** | ~40.0 A to 50.0 A (Typical) | | **DC Resistance (DCR)** | ~1.5 mΩ to 2.2 mΩ (Max) | | **Case Size** | 3.8 x 2.2 mm footprint (approximate) | | **Operating Temp** | -55°C to +155°C | --- ### Key Components & Construction 1. **Core Material**: It utilizes a composite metal powder core (often Carbonyl Iron or specialized alloys). This provides "soft saturation" characteristics, meaning the inductance drops gradually rather than abruptly as current increases. 2. **Shielding**: The inductor is magnetically shielded. This is critical for preventing Electromagnetic Interference (EMI) from affecting surrounding sensitive components in a circuit. 3. **Terminations**: The part features lead-free, SMD (Surface Mount Device) pads designed to withstand high vibration and thermal cycling, common in automotive environments. ### Typical Applications * **DC-DC Converters**: Used in Voltage Regulator Modules (VRMs) for high-current CPUs or GPUs. * **Automotive Electronics**: Power supplies for Advanced Driver Assistance Systems (ADAS) and Infotainment systems. * **Battery Management Systems (BMS)**: Handling the high-frequency switching and power filtering required for battery stability. ### Part Number Breakdown While manufacturer codes vary slightly, the nomenclature generally follows this logic: * **HRP**: Series designation (High-current, Power, Shielded). * **3822**: Dimensions (approx. 3.8mm x 2.2mm). * **R82**: Inductance value (R = decimal point; 0.82 µH). * **M**: Tolerance (M = ±20%).