The **UP5-331-R** is a high-performance power inductor part of the **Uni-Pac 5 (UP5)** series manufactured by Eaton (formerly Bussmann). These components are designed specifically for high-density power applications. --- ### ## Technical Specifications The UP5-331-R is characterized by its high energy storage and low core loss. Below are the primary technical parameters: | Parameter | Specification | | :--- | :--- | | **Inductance** | 330 µH | | **Tolerance** | ±20% | | **DC Current Rating (Irms)** | ~2.16 Amps | | **Saturation Current (Isat)** | ~2.32 Amps | | **DC Resistance (DCR)** | ~0.198 Ohms (Typical) | | **Core Material** | Ferrite | | **Operating Temperature** | -40°C to +125°C | --- ### ## Key Features 1. **High Power Density:** The UP5 series utilizes a unique construction that allows for a small footprint relative to its current-handling capabilities. 2. **Low Core Loss:** The ferrite core material is optimized for high-frequency switching power supplies, reducing heat generation. 3. **Shielded Construction:** It is designed to minimize Electromagnetic Interference (EMI), which is critical in sensitive electronic circuits. 4. **SMD Design:** It is a Surface Mount Device (SMD), making it compatible with automated "pick-and-place" assembly processes. --- ### ## Common Applications The UP5-331-R is typically found in the following electronic circuits: * **DC-DC Converters:** Used for energy storage and filtering in buck, boost, or SEPIC converters. * **Industrial Electronics:** High-efficiency power supplies for sensors and controllers. * **Telecommunications:** Distributed power systems and base station equipment. * **Computer Peripherals:** Voltage Regulator Modules (VRMs) for processing units. --- ### ## Part Number Breakdown Understanding the nomenclature helps in identifying variants: * **UP5:** Series name (Uni-Pac 5). * **331:** Inductance code (33 followed by 1 zero = 330 µH). * **R:** RoHS compliant (lead-free).