The part number **0512CDMCCDS-R22MC** refers to a specific type of **power inductor** manufactured by **Sumida**. This component is designed for high-efficiency power conversion in compact electronic devices. --- ### 1. Component Overview The 0512CDMCCDS-R22MC is a surface-mount (SMD) power inductor part of the CDMC series. It is characterized by its metal composite construction, which offers superior performance in high-current applications compared to traditional ferrite inductors. ### 2. Part Number Breakdown The nomenclature typically follows this structure: | Segment | Meaning | Detail | | :--- | :--- | :--- | | **0512** | Dimensions | Approx. 5.0mm x 5.0mm with 1.2mm height | | **CDMC** | Series | Metal Composite Molded Inductor | | **CDS** | Structure Type | Specific internal design/standard | | **R22** | Inductance Value | **0.22 µH** (R denotes decimal point) | | **M** | Tolerance | **±20%** | | **C** | Packaging | Taping/Reel | --- ### 3. Technical Specifications The typical performance characteristics for this class of inductor are as follows: * **Inductance:** 0.22 µH. * **Core Material:** Metal powder (Magnetic iron powder) which allows for high saturation currents. * **DCR (DC Resistance):** Very low, typically in the range of 4-7 mΩ, minimizing power loss. * **Saturation Current ($I_{sat}$):** The current at which inductance drops by ~30%. For this size, it is usually between 10A and 15A. * **Temperature Rise Current ($I_{rms}$):** The current that causes a 40°C temperature rise, typically high due to the metal composite body. * **Operating Temperature:** -55°C to +125°C. --- ### 4. Key Advantages 1. **High Saturation:** Unlike ferrite cores that saturate abruptly, metal composite cores have a "soft" saturation curve, making the circuit more stable under heavy loads. 2. **Low Profile:** At only 1.2mm height, it is ideal for thin devices like smartphones and tablets. 3. **Low EMI:** The molded construction acts as a natural magnetic shield, reducing electromagnetic interference. 4. **Acoustic Noise Reduction:** The solid molded structure minimizes the "buzzing" noise (magnetostriction) common in traditional wire-wound inductors. ### 5. Common Applications * **DC-DC Converters:** Used in buck/boost converters for CPU/GPU power supply. * **Mobile Electronics:** Smartphones, tablets, and ultra-thin laptops. * **SSD/Storage:** Power management for high-speed data drives. * **Automotive/Industrial:** Distributed power systems where space is at a premium.