The **1306F-R47J** is a surface-mount (SMD) power inductor commonly used in DC-DC converters and power management circuits. It belongs to a category of high-reliability, low-profile magnetic components. --- ## 1. Technical Specifications The alphanumeric code "1306F-R47J" provides specific information about the component's characteristics: | Parameter | Specification | Description | | :--- | :--- | :--- | | **Inductance** | 0.47 µH | The amount of magnetic energy it can store. | | **Tolerance** | ±5% (indicated by 'J') | The precision of the inductance value. | | **Package Size** | 13.5 x 12.6 x 6.0 mm | The physical dimensions (Length x Width x Height). | | **Series/Type** | 1306F | Standard series for high-current SMD power inductors. | | **Core Material** | Ferrite / Composite | Typically designed for low core loss at high frequencies. | --- ## 2. Key Features * **High Current Handling:** Designed to manage high saturation currents without a significant drop in inductance. * **Low DCR (DC Resistance):** Minimizes power loss as heat, improving the overall efficiency of the power supply. * **Magnetic Shielding:** Usually features a shielded construction to prevent Electromagnetic Interference (EMI) with neighboring components. * **Surface Mount Design:** Optimized for pick-and-place automated assembly. --- ## 3. Applications These parts are typically found in robust electronic systems requiring stable power delivery: 1. **Voltage Regulator Modules (VRMs):** Found on motherboards and server cards to regulate CPU/GPU power. 2. **DC-DC Converters:** Used in Buck or Boost converters to step voltage up or down. 3. **Industrial Power Supplies:** Suitable for high-reliability industrial environments. 4. **Telecommunications:** Used in base stations and networking hardware. --- ## 4. Part Number Breakdown Understanding how to read the part number: * **1306:** Represents the physical size (Footprint). * **F:** Usually denotes the manufacturer series or a specific material coating. * **R47:** The value code. "R" acts as the decimal point (0.47). * **J:** The tolerance code (J = ±5%, K = ±10%, M = ±20%).