The **UP5-330-R** is a high-performance power inductor belonging to the **UNI-PAC 5 (UP5)** series, manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). These parts are primarily used in DC-DC converters and power supplies. --- ### 1. Key Specifications The following table highlights the critical electrical and physical characteristics of the UP5-330-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 33.0 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 5.8 Amps (Typical) | | **Saturation Current (Isat)** | 6.8 Amps (Typical) | | **DC Resistance (DCR)** | 0.0271 Ohms (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package Type** | Surface Mount (SMD) | --- ### 2. Physical Construction The UP5 series is designed for durability and efficiency: * **Core Material:** Typically uses a ferrite core or iron powder composite to minimize core losses at high frequencies. * **Shielding:** The "UP" series generally features a drum-core construction with a magnetic shield to reduce Electromagnetic Interference (EMI). * **Termination:** Features robust solder pads designed for high-vibration environments. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying variants: | Segment | Meaning | | :--- | :--- | | **UP5** | Series designation (Indicates physical size/footprint) | | **330** | Inductance value: "33" followed by "0" zeros = 33 µH | | **-R** | RoHS compliant (Lead-free) | --- ### 4. Common Applications Due to its high current capability and stable inductance, the UP5-330-R is commonly found in: * **Step-down (Buck) Converters:** Providing energy storage for voltage regulation. * **Filtering:** Used in input/output filters to reduce ripple voltage in switching power supplies. * **Industrial Electronics:** Powering logic boards and motors. * **Telecommunications:** Used in distributed power architectures. ---