The part number **0410CDMCCDS-R68MC** refers to a high-current, low-profile **Power Inductor** typically manufactured by Sumida. These components are designed for high-efficiency DC-DC conversion in compact electronic devices. --- ### 1. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: | Code Segment | Meaning | Specification | | :--- | :--- | :--- | | **0410** | Case Size | Approx. 4.0 x 4.0 mm (Footprint) | | **CDMC** | Series Type | Surface Mount Power Inductor (Molded) | | **CDS** | Construction | Shielded construction for low EMI | | **R68** | Inductance Value | 0.68 µH (Microhenries) | | **M** | Tolerance | ±20% | | **C** | Special Code | Internal factory designation/packaging | --- ### 2. Key Technical Specifications While exact values can vary slightly by manufacturer batch, the **0410CDMC** series generally follows these parameters: * **Inductance:** 0.68 µH. * **DCR (DC Resistance):** Very low (typically in the range of 10-18 mΩ) to minimize power loss. * **Saturation Current ($I_{sat}$):** The current at which inductance drops by a specific percentage (usually 30%). For this size, it is typically around **7A to 10A**. * **Temperature Rise Current ($I_{rms}$):** The current that causes a 40°C temperature rise, usually around **6A to 8A**. * **Operating Temperature:** -40°C to +125°C (including self-heating). --- ### 3. Construction Features * **Molded Structure:** The coil is embedded in a metal iron powder composite. This "molded" design allows for higher current density and better performance at high frequencies compared to traditional wire-wound ferrite inductors. * **Magnetic Shielding:** The composite material acts as a natural shield, reducing electromagnetic interference (EMI) with neighboring components on the PCB. * **Low Profile:** The "10" in 0410 often denotes a height of approximately 1.0mm to 1.2mm, making it ideal for thin devices like smartphones or tablets. --- ### 4. Common Applications Due to its high current handling and small footprint, this part is commonly found in: 1. **Voltage Regulator Modules (VRM):** For CPUs and GPUs. 2. **DC-DC Converters:** Buck, Boost, or Buck-Boost topologies. 3. **Portable Electronics:** Smartphones, SSDs, and laptops. 4. **Automotive Infotainment:** Compact power supplies for sensors and displays. ---