The part number **0630CDMCDDS-R22MC** refers to a high-power, shielded surface-mount (SMD) inductor, typically manufactured by companies like Sumida. This specific component is designed for high-current power applications. ### 1. Part Number Breakdown The alphanumeric code follows a specific naming convention used for power inductors: | Segment | Meaning | Details | | :--- | :--- | :--- | | **0630** | Case Size | Dimensions approx. 6.0 x 6.0 mm with 3.0 mm height. | | **CDMCDDS** | Series Name | High current, metal compound molded construction. | | **R22** | Inductance Value | **0.22 µH** (R denotes the decimal point). | | **M** | Tolerance | **±20%** tolerance. | | **C** | Packaging/Type | Usually refers to Taping & Reel packaging or a specific core material. | --- ### 2. Key Specifications These parts are known for their "Molded" construction, which uses iron powder to achieve high saturation currents in a small footprint. * **Inductance:** 0.22 µH * **DC Resistance (DCR):** Extremely low (typically < 3.0 mΩ), minimizing power loss. * **Saturation Current ($I_{sat}$):** High capacity (often > 20A), meaning it maintains inductance even at high peak currents. * **Operating Temperature:** Typically rated from -40°C to +125°C. * **Shielding:** Magnetically shielded to reduce Electromagnetic Interference (EMI). --- ### 3. Core Features and Benefits #### A. Metal Powder Molded Technology Unlike traditional wire-wound inductors with a ferrite drum, this part is made by molding metal powder around a copper coil. This creates a "soft saturation" characteristic, where inductance drops gradually rather than sharply when the current increases. #### B. Low EMI The molded structure acts as a natural magnetic shield, preventing the magnetic field from interfering with neighboring components on the PCB. #### C. High Efficiency The ultra-low DCR makes it ideal for high-efficiency DC-DC converters, as it reduces heat generation caused by resistive losses ($I^2R$). --- ### 4. Common Applications This part is commonly used in power management modules where space is limited but current demand is high: * **Voltage Regulator Modules (VRM):** For CPUs and GPUs. * **DC-DC Converters:** Buck, Boost, and SEPIC converters. * **Consumer Electronics:** Laptops, tablets, and high-end smartphones. * **Automotive/Industrial:** Distributed power systems and battery-powered devices. ---