The **M500310R2DK-R** is a high-performance, shielded power inductor specifically designed for automotive and industrial applications. It is part of the **M5003** series, known for its small form factor and high efficiency. ### 1. Technical Specifications Below are the primary electrical characteristics of this component: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 1.0 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | ~1.6 mΩ (Nominal) | | **Saturation Current (Isat)** | ~30A - 35A (typical) | | **Heating Current (Irms)** | ~25A - 28A (typical) | | **Operating Temperature** | -40°C to +125°C (including self-heating) | | **Package / Case** | Surface Mount (SMD) | | **Shielding** | Magnetically Shielded | --- ### 2. Key Features and Materials The "R2DK" designation often refers to specific material compositions or reel packaging standards used by the manufacturer. * **Magnetically Shielded:** The core is encased to minimize Electromagnetic Interference (EMI), which is critical for densely packed PCBs and noise-sensitive automotive electronics. * **Metal Composite Core:** Usually utilizes a carbonyl iron powder or similar metal alloy. This provides a "soft saturation" characteristic, meaning the inductance drops gradually rather than abruptly when current increases. * **Low DCR:** The use of flat wire or heavy-gauge copper reduces DC resistance, minimizing power loss and heat generation. --- ### 3. Application Use-Cases This inductor is typically found in high-current power management stages: 1. **DC-DC Converters:** Used as a storage element in buck (step-down) or boost (step-up) regulators. 2. **Automotive Infotainment:** Powering processors and displays where low noise is required. 3. **ADAS (Advanced Driver Assistance Systems):** High-reliability power delivery for sensors and cameras. 4. **Voltage Regulator Modules (VRM):** For high-speed computing or industrial controllers. --- ### 4. Part Number Breakdown (Typical) While manufacturers vary slightly, the code generally follows this logic: * **M5003:** Series/Frame size (Dimensions roughly 13mm x 13mm). * **10R:** Inductance value (1.0 microhenries). * **2DK:** Tolerance and internal material code. * **-R:** RoHS compliant / Tape and Reel packaging.