### Overview of TPI10040F-R56M The **TPI10040F-R56M** is a high-current, shielded power inductor typically used in automotive and industrial applications. It is designed for high-frequency DC-DC converters where efficiency and high current handling are critical. --- ### Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.56 µH (microHenries) | | **Tolerance** | ±20% (M) | | **Case Size** | 10.8 mm x 10.0 mm x 4.0 mm | | **DC Resistance (DCR)** | ~0.75 mΩ (typical) | | **Saturation Current (Isat)** | ~50A to 60A (depending on temp rise) | | **Operating Temperature** | -40°C to +125°C (usually) | | **Shielding** | Magnetically Shielded | --- ### Core Characteristics #### 1. Low DCR (Direct Current Resistance) The part utilizes flat-wire technology or high-density metal powder. By keeping the DCR extremely low (less than 1 mΩ), the component minimizes power loss due to heat (I²R loss), making it highly efficient for high-current power stages. #### 2. High Saturation Current The "R56" (0.56 µH) inductance value is relatively low, which allows the inductor to handle very high peak currents without the magnetic core "saturating." When a core saturates, inductance drops, which can cause circuit failure; this part is designed to maintain stability even under heavy loads. #### 3. Magnetic Shielding The component is fully shielded. This is crucial in modern electronics to prevent **Electromagnetic Interference (EMI)** from affecting nearby sensitive components, such as microcontrollers or RF modules. --- ### Part Number Breakdown * **TPI**: Series identifier (usually indicates High Current / Power Inductor). * **10040**: Dimensions (approx. 10mm x 10mm width/length, 4.0mm height). * **F**: Likely indicates Lead-Free/RoHS compliant or a specific material code. * **R56**: The Inductance value ($0.56 \mu H$). The "R" acts as a decimal point. * **M**: Tolerance code ($\pm 20\%$). --- ### Common Applications * **Voltage Regulator Modules (VRMs):** Found in servers and high-performance computing. * **Automotive Power:** DC-DC converters for infotainment or ADAS systems. * **Battery Management Systems (BMS):** Handling charging and discharging currents. * **GPU/CPU Power Supply:** Providing stable low-voltage, high-current power.