The **UP2UC-4R7-R** is a specific surface-mount power inductor manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the Uni-Pac (UP) series, which is designed for high-power density and reliability in DC-DC converter applications. --- ## Technical Specifications The following table outlines the primary electrical and physical characteristics of the UP2UC-4R7-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 4.7 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 4.4 Amps (Typical) | | **Saturation Current (Isat)** | 5.8 Amps (Typical) | | **DC Resistance (DCR)** | 0.0175 Ohms (17.5 mΩ) | | **Mounting Type** | Surface Mount (SMD) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Non-Shielded | --- ## Key Features ### 1. High Power Density The UP2UC series is engineered to handle high current in a relatively small footprint. This makes it ideal for modern compact electronics where PCB space is limited. ### 2. Core Material It typically utilizes a **ferrite core**. Ferrite provides low core losses at high frequencies, which improves the overall efficiency of the power supply. ### 3. Durability The part is designed to withstand high reflow temperatures required for lead-free soldering processes (RoHS compliant). --- ## Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **UP**: Series Name (Uni-Pac). * **2**: Size/Dimension code. * **UC**: Low profile/Unshielded configuration. * **4R7**: Inductance value (4.7 µH). The "R" acts as the decimal point. * **-R**: RoHS compliant. --- ## Common Applications * **DC-DC Converters:** Used as energy storage elements in buck, boost, and SEPIC converters. * **Voltage Regulator Modules (VRMs):** Found on motherboards and server power modules. * **Industrial Electronics:** Powering sensors, PLCs, and distributed power systems. * **Consumer Electronics:** Laptop power rails and high-end audio equipment.