The **UP2C-471-R** is a specific surface-mount power inductor manufactured by Eaton (formerly Bussmann). It belongs to the **Uni-Pac (UP2C)** series, known for high power density and a low profile. --- ### 1. Technical Specifications Below is a breakdown of the key electrical and physical characteristics of the UP2C-471-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 470 µH | | **Tolerance** | ±20% | | **DC Resistance (DCR)** | 1.150 Ohms (Typical) | | **Irms (Root Mean Square Current)** | 0.54 Amps | | **Isat (Saturation Current)** | 0.61 Amps | | **Package / Case** | SMD (approx. 12.9mm x 9.4mm) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Decoding the Part Number The part number follows a specific nomenclature used by Eaton: * **UP2C**: Refers to the series name and the physical size/footprint of the inductor. * **471**: This is the inductance code in microhenries (µH). The first two digits are significant figures, and the third is the multiplier (10^1). * $47 \times 10^1 = 470$ µH. * **R**: Indicates that the part is **RoHS compliant** (lead-free). --- ### 3. Key Features * **Magnetically Shielded:** The design minimizes Electromagnetic Interference (EMI), making it suitable for noise-sensitive circuits. * **High Power Density:** It provides high inductance values in a relatively small footprint. * **Ferrite Core:** Utilizes a ferrite core material for low core losses at high frequencies. * **Reflow Solder Compatible:** Designed to withstand standard industrial SMT soldering processes. --- ### 4. Common Applications This inductor is typically used in power management circuits, including: 1. **DC-DC Converters:** Used as an energy storage element in buck, boost, or buck-boost regulators. 2. **Output Filters:** Smoothing high-frequency ripples in switching power supplies. 3. **Industrial Electronics:** Used in LED drivers, motor controls, and battery-powered handheld devices. 4. **Computer Peripherals:** Voltage Regulation Modules (VRM) for laptops and desktops. ---