## Technical Overview: AC10-R82M-RC Inductor The **AC10-R82M-RC** is a high-current, surface-mount (SMD) power inductor commonly used in automotive and industrial power management applications. It is part of the **AC10 Series** produced by manufacturers like Allied Components. ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 0.82 µH | | **Tolerance** | ±20% (indicated by 'M') | | **DCR (Direct Current Resistance)** | ~1.5 mΩ (Max) | | **Isat (Saturation Current)** | ~30A - 40A (Typical) | | **Irms (Heating Current)** | ~25A - 30A (Typical) | | **Operating Temperature** | -55°C to +125°C | | **Package / Case** | Molded Shielded (e.g., 10x10mm footprint) | --- ### 2. Part Number Breakdown The nomenclature provides specific details about the component's construction and performance: * **AC10**: Series identifier (usually refers to the physical dimensions, approximately 10mm x 10mm). * **R82**: The Inductance value. "R" acts as a decimal point, resulting in **0.82 microhenries (µH)**. * **M**: Tolerance code representing **±20%**. * **RC**: Denotes **RoHS Compliant**, meaning it is free from hazardous substances like lead. --- ### 3. Construction and Features The AC10 series is designed for "High-Current" environments where efficiency is critical. * **Magnetic Shielding:** The part is molded with a magnetic metal powder core. This reduces electromagnetic interference (EMI) and prevents the magnetic field from affecting neighboring components. * **Low DCR:** Because it uses thick internal copper wiring, it has very low DC resistance, which minimizes power loss (heat) during operation. * **Soft Saturation:** Unlike ferrite cores that lose inductance sharply, these molded powder cores exhibit "soft saturation," meaning they maintain better performance even when the current exceeds the rated limits. --- ### 4. Common Applications This specific inductor is ideal for high-frequency DC-DC converters: 1. **Automotive Systems:** ECU power supplies, LED lighting drivers, and ADAS modules. 2. **Voltage Regulator Modules (VRMs):** Found on high-end PC motherboards and servers. 3. **Industrial Power Supplies:** Used in Point-of-Load (PoL) converters to step down voltages for microprocessors. ---