The part number **0412CDMCCDS-R12MC** refers to a high-current, low-profile **Power Inductor** manufactured by **Sumida**. These components are specifically designed for high-efficiency DC-DC conversion in compact electronic devices. --- ### 1. Technical Specifications The following table breaks down the core electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.12 µH | | **Tolerance** | ±20% (M) | | **DC Resistance (DCR)** | ~1.65 mΩ (Max) | | **Saturation Current (Isat)** | ~25.0 A | | **Temperature Rise Current (Irms)** | ~17.0 A | | **Dimensions (L x W x H)** | 4.4 x 4.0 x 1.2 mm | | **Operating Temperature** | -55°C to +125°C | --- ### 2. Part Number Decoder Understanding the nomenclature helps in identifying the series and its capabilities: * **0412**: Refers to the case size (approx. 4.0mm x 4.0mm x 1.2mm). * **CDMC**: Indicates the series type (Molded Power Inductor). * **CDS**: Specific sub-series identifier (often denoting high frequency/low DCR). * **R12**: The inductance value. "R" acts as a decimal point, so **0.12 µH**. * **M**: Tolerance code (±20%). * **C**: Packaging or internal revision code. --- ### 3. Key Features and Applications #### Features: * **Metal Compound Molding:** The coil is embedded in a metallic magnetic powder. This construction provides a "soft" saturation characteristic and excellent magnetic shielding, reducing Electromagnetic Interference (EMI). * **High Current Handling:** Despite its small 0412 footprint, it can handle very high saturation currents (up to 25A) due to its low DCR. * **Low Profile:** At only 1.2mm height, it is ideal for slim consumer electronics. #### Common Applications: 1. **Voltage Regulator Modules (VRM):** Used in CPUs and GPUs for power delivery. 2. **Mobile Devices:** Smartphones, tablets, and ultra-thin laptops. 3. **DC/DC Converters:** High-frequency point-of-load (POL) power supplies. 4. **SSD/Storage:** Power management for solid-state drives. ---