The part number **0410CDMCCDS-R22MC** refers to a high-current, low-profile **Power Inductor** typically manufactured by Sumida. These components are essential in modern electronics for voltage regulation and noise filtering. --- ### 1. Part Number Breakdown Understanding the alphanumeric code helps identify the physical and electrical characteristics of the component: | Segment | Meaning | Description | | :--- | :--- | :--- | | **0410** | **Size Code** | Approx. 4.0mm x 4.0mm footprint and 1.0mm height. | | **CDMC** | **Series** | Metal compound molded type (high saturation current). | | **CDS** | **Construction** | Specific structural design (surface mount). | | **R22** | **Inductance** | **0.22 µH** (R denotes the decimal point). | | **M** | **Tolerance** | ±20% inductance tolerance. | | **C** | **Packing** | Usually refers to Carrier Tape/Reel packaging. | --- ### 2. Key Technical Specifications While exact values can vary slightly by manufacturer batch, the typical specs for an R22 (0.22µH) 0410 series inductor are: * **Inductance:** 0.22 µH * **DC Resistance (DCR):** Extremely low (typically between 4mΩ to 8mΩ) to minimize power loss. * **Saturation Current (Isat):** The current at which inductance drops (usually around 10A - 15A for this size). * **Temperature Rise Current (Irms):** The current that causes a 40°C temp rise (approx. 7A - 10A). * **Operating Temperature:** -40°C to +125°C (including self-heating). --- ### 3. Core Features and Benefits * **Molded Construction:** The coil is embedded in a metal powder mixture. This provides excellent magnetic shielding and reduces acoustic noise (buzzing). * **High Current Density:** Despite its small 4x4mm footprint, it can handle significant current compared to traditional ferrite drum cores. * **Low Profile:** At only 1.0mm high, it is ideal for ultra-thin devices like smartphones and tablets. * **Soft Saturation:** Unlike standard inductors that drop performance sharply when overloaded, these have a "soft" saturation curve. --- ### 4. Typical Applications This specific inductor is commonly found in **DC-DC Converter** circuits, specifically: 1. **CPU/GPU Power Supply:** Used in "Buck Converters" to step down voltage for processors. 2. **Mobile Devices:** Smartphones, tablets, and wearables where space is limited. 3. **SSD Drives:** Filtering power for high-speed data storage. 4. **Automotive Infotainment:** Compact power modules for in-car screens. ---