The **R7X1008M-R82** is a specialized high-current, high-frequency molded power inductor. These components are primarily used in voltage regulator modules (VRMs) for servers, graphics cards (GPUs), and high-performance computing systems. --- ### 1. Technical Specifications The part number follows a specific nomenclature common to manufacturers like **Mag.Layers** or **Chilisin**. Below are the typical technical characteristics for this series: | Parameter | Specification | Unit | | :--- | :--- | :--- | | **Inductance** | 0.82 (indicated by R82) | µH | | **Tolerance** | ±20% (Typical) | % | | **Saturation Current (Isat)** | ~30A - 50A (Depending on size) | Amps | | **Heating Current (Irms)** | ~25A - 40A | Amps | | **DC Resistance (DCR)** | ~1.5 - 3.5 (Max) | mΩ | | **Operating Temp** | -40 to +125 | °C | --- ### 2. Physical Construction The "R7X" series usually refers to a **Molded Inductor** structure. * **Core Material:** Carbonyl iron powder or alloy powder mixed with resin. * **Shielding:** The molded construction provides natural magnetic shielding, reducing Electromagnetic Interference (EMI). * **Structure:** A flat wire copper coil is placed inside the mold, and the metal powder is pressed around it. This design minimizes the physical size while maximizing current handling. --- ### 3. Key Features * **Soft Saturation:** Unlike ferrite inductors that drop inductance sharply when overloaded, molded inductors have a gradual saturation curve. * **Low DCR:** The use of thick copper wire ensures minimal power loss through heat. * **High Frequency:** Optimized for switching frequencies ranging from 100kHz up to several MHz. * **Acoustic Noise Reduction:** The solid molded body prevents the "coil whine" often heard in traditional open-wire inductors. --- ### 4. Common Applications Due to its high current density and efficiency, the R7X1008M-R82 is found in: 1. **Motherboards:** Multi-phase CPU power delivery. 2. **GPU Power Stages:** High-performance video card VRMs. 3. **DC/DC Converters:** Point-of-load (POL) modules for industrial electronics. 4. **Networking:** Power supplies for routers and high-speed switches.