## Overview of the TPI10040F-R47M The **TPI10040F-R47M** is a high-current, surface-mount (SMD) power inductor. It is specifically designed for high-efficiency power conversion applications, such as DC-DC converters, Point-of-Load (POL) modules, and high-frequency power supplies. --- ### Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 0.47 µH (470 nH) | | **Tolerance** | ±20% (indicated by 'M') | | **DC Resistance (DCR)** | Typ: 0.29 mΩ / Max: 0.32 mΩ | | **Saturation Current (Isat)** | ~80A to 100A (depending on temp rise) | | **Operating Temperature** | -40°C to +125°C | | **Dimensions** | Approx. 10.0 x 6.4 x 10.0 mm | --- ### Key Electronic Features 1. **Low DC Resistance (DCR):** The part features an extremely low resistance (measured in milliohms). This minimizes power loss due to heat (I²R loss), making it ideal for high-efficiency electronics. 2. **High Saturation Current:** The core material is engineered to handle massive spikes in current without "saturating." If an inductor saturates, it loses its inductive properties and acts like a short circuit; this part is robust enough for high-load environments. 3. **Flat Wire Construction:** Unlike standard round-wire inductors, this model often utilizes flat copper wire. This increases the surface area for current flow (reducing skin effect at high frequencies) and allows for a more compact physical footprint. 4. **Shielded Design:** The component is magnetically shielded. This reduces Electromagnetic Interference (EMI), preventing the magnetic field generated by the inductor from interfering with nearby sensitive components on the PCB. --- ### Common Applications * **Computing:** Voltage Regulator Modules (VRM) for CPUs and GPUs. * **Networking:** High-speed routers and switches. * **Industrial:** High-current power supplies and motor controllers. * **Data Centers:** High-density power distribution boards. --- ### Part Number Breakdown (Generic Structure) ```text TPI 10040 F - R47 M | | | | | | | | | +-- Tolerance (M = ±20%) | | | +------ Inductance Value (R47 = 0.47µH) | | +------------- Configuration/Material Code | +------------------ Case Size (10.0mm x 4.0mm height approx) +------------------------ Series Name (High Current Power Inductor) ```