The **FDV0620-H-R20M** is a high-current, fixed power inductor manufactured by Murata (formerly Toko). It belongs to the FDV series, which is specifically designed for high-efficiency power conversion in compact electronic devices. --- ### 1. Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 0.20 µH | | **Tolerance** | ±20% | | **Inductance Test Frequency** | 100 kHz | | **DC Resistance (DCR)** | 1.1 mΩ (typical) | | **Rated Current (Isat)** | 28.0 A (Saturation) | | **Rated Current (Itemp)** | 18.2 A (Temperature Rise) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Part Number Breakdown The nomenclature provides specific details about the component's construction: * **FDV**: Series name (Metal alloy core, magnetically shielded). * **0620**: Dimensions (Approx. 6.7mm x 7.4mm footprint, 2.0mm height). * **H**: High reliability/Automotive grade capability. * **R20**: Inductance value (R20 = 0.20 microhenries). * **M**: Tolerance (M = ±20%). --- ### 3. Key Features and Construction #### **Material (Metal Alloy Core)** Unlike traditional ferrite inductors, the FDV0620-H-R20M uses a **metal alloy powder core**. This provides several advantages: * **Soft Saturation:** The inductance drops gradually as current increases, rather than dropping sharply. * **High Current Density:** Can handle significantly higher peak currents in a smaller package size. #### **Magnetic Shielding** The part is magnetically shielded, which reduces Electromagnetic Interference (EMI) and prevents the magnetic field from affecting neighboring components on the PCB. #### **Low Profile** At only 2.0mm in height, it is ideal for thin electronic devices like laptops, tablets, and slim power modules. --- ### 4. Common Applications Due to its high current handling and low DCR, this inductor is primarily used in: 1. **DC-DC Converters:** Voltage Regulator Modules (VRMs) for CPUs and GPUs. 2. **Point of Load (PoL):** High-efficiency power delivery in telecommunications. 3. **Automotive Electronics:** Infotainment systems and ADAS modules (where "H" grade is specified). 4. **Battery Powered Devices:** Where low DCR is critical to extending battery life by reducing power loss.