The **0630CDMCDDS-R20MC** is a high-performance, surface-mount (SMD) power inductor commonly used in DC-DC converters and power supply modules. It belongs to the **0630** series, which signifies its physical dimensions. --- ### 1. Technical Specification Table | Feature | Specification | | :--- | :--- | | **Inductance** | 0.20 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | ~2.5 mΩ (Max) | | **Rated Current (Irms)** | ~18 - 22 A | | **Saturation Current (Isat)** | ~35 - 40 A | | **Operating Temperature** | -55°C to +125°C | | **Case Size** | 0630 (Approx. 7.0 x 6.6 x 3.0 mm) | --- ### 2. Decoding the Part Number The alphanumeric string provides specific details about the component's construction and performance: * **0630**: Represents the physical size (Length: ~6.0mm - 7.0mm, Height: 3.0mm). * **CDMC**: Indicates the series type (Shielded Metal Composite Inductor). * **R20**: Represents the Inductance value. "R" acts as a decimal point, so $R20 = 0.20 \mu H$. * **M**: Represents the Tolerance (M = ±20%). * **C**: Typically indicates the packaging type (Taping/Reel). --- ### 3. Key Electronic Characteristics #### High Current Handling Because this inductor uses a **metal powder core** (composite), it can handle much higher saturation currents compared to traditional ferrite inductors. This prevents the inductance from "dropping off" suddenly when high current spikes occur. #### Magnetic Shielding The component is magnetically shielded. This is crucial in modern electronics to minimize **Electromagnetic Interference (EMI)**, ensuring that the magnetic field generated by the inductor does not interfere with nearby sensitive components like CPUs or wireless modules. #### Low DCR (Direct Current Resistance) The R20 model has an extremely low resistance (measured in milliohms). This minimizes power loss through heat, making it highly efficient for high-speed switching power supplies. --- ### 4. Common Applications * **Voltage Regulator Modules (VRM):** Used in motherboards and GPUs. * **DC/DC Converters:** High-frequency point-of-load (POL) converters. * **Battery Powered Devices:** Laptops and tablets where space is limited and efficiency is key. * **Automotive Electronics:** Infotainment and driver assistance systems.