The **UP2C-331-R** is a specific electronic component belonging to the **Power Inductor** category. It is part of the **Uni-Pac (UP)** series manufactured by **Bussmann (by Eaton)**. These components are primarily used for energy storage and filtering in power management circuits. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the UP2C-331-R: | Feature | Specification | | :--- | :--- | | **Part Number** | UP2C-331-R | | **Inductance** | 330 µH (Microhenries) | | **Tolerance** | ±20% | | **Current Rating (Isat)** | ~0.55 A (Saturation Current) | | **Current Rating (Irms)** | ~0.52 A (RMS Current) | | **DC Resistance (DCR)** | ~0.876 Ω (Max) | | **Package Type** | Surface Mount (SMD) | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Physical Construction The "UP2C" series features a specific mechanical design optimized for automated assembly: * **Core Material:** Ferrite drum core. * **Shielding:** It is a **non-shielded** (or semi-shielded) design, meaning it is cost-effective but may have more electromagnetic interference (EMI) than fully shielded inductors. * **Dimensions:** Typically measures approximately **12.9mm x 9.4mm** with a height of **5.2mm**. * **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and complies with RoHS standards. --- ### 3. Functional Role As a 330 µH power inductor, this part serves three main purposes in a circuit: 1. **Energy Storage:** In DC-DC converters (Buck, Boost, or Buck-Boost), it stores energy in its magnetic field during the "on" cycle and releases it during the "off" cycle. 2. **Filtering:** It blocks high-frequency AC noise while allowing DC current to pass, smoothing out the output voltage ripples. 3. **Impedance Matching:** Used in specific RF or signal applications to match circuit impedances, though it is primarily a power-line component. --- ### 4. Common Applications * **Power Supplies:** Desktop and laptop DC-DC converters. * **Industrial Electronics:** LED drivers and motor control circuits. * **Consumer Electronics:** Set-top boxes, DVD players, and game consoles. * **Battery Powered Systems:** Where efficient voltage regulation is required.