The **CSBL0530-R20M** is a high-current, low-profile power inductor typically used in DC-DC converter applications. It belongs to the category of surface-mount device (SMD) molded power inductors. --- ### 1. Technical Specifications The part number provides specific information regarding its physical size and electrical properties: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.20 µH (indicated by "R20") | | **Tolerance** | ±20% (indicated by "M") | | **Dimensions (L x W)** | Approx. 5.0 mm x 5.0 mm | | **Height** | Approx. 3.0 mm | | **Core Material** | Metal Alloy / Carbonyl Powder | | **Shielding** | Magnetically Shielded (Molded construction) | --- ### 2. Key Characteristics * **High Saturation Current ($I_{sat}$):** Because it uses a metallic powder core, it can handle high peak currents without the inductance dropping sharply (soft saturation). * **Low DC Resistance (DCR):** Designed with thick copper wire to minimize power loss and heat generation. * **Magnetically Shielded:** The molded body encapsulates the coil, significantly reducing Electromagnetic Interference (EMI) with neighboring components. * **High Frequency Performance:** Optimized for switching frequencies ranging from 500 kHz to over 5 MHz. --- ### 3. Application Areas These inductors are commonly found in compact electronic assemblies where power density is critical: 1. **Voltage Regulator Modules (VRM):** For CPUs and GPUs in laptops. 2. **Point of Load (POL) Converters:** Converting main rail voltages (e.g., 12V or 5V) to lower voltages (1.2V, 0.8V). 3. **Battery Powered Devices:** Smartphones and tablets due to the low-profile height. 4. **DC-DC Buck Converters:** Used as the energy storage element in the output filter. --- ### 4. Part Number Breakdown ```text CSBL 0530 - R20 M | | | | | | | +-- Tolerance (M = ±20%) | | +------ Inductance Value (R20 = 0.20µH) | +------------- Case Size (05 = 5mm width, 30 = 3mm height) +------------------ Series Code (Molded Inductor) ```