## Technical Overview: UP2B-150-R Power Inductor The **UP2B-150-R** is a high-performance, surface-mount (SMD) power inductor part of the **Uni-Pac 2 (UP2) series**, originally manufactured by Cooper Bussmann (now **Eaton**). It is designed for DC-DC converters and power supply filtering applications. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 15.0 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 2.83 Amps (Typical) | | **Saturation Current (Isat)** | 2.50 Amps | | **DC Resistance (DCR)** | 0.0416 Ohms (Max) | | **Operating Temperature** | -40°C to +125°C | | **Shielding** | Magnetically Shielded | --- ### 2. Physical & Material Composition * **Core Material:** Ferrite core construction, which provides high efficiency and low core losses at high frequencies. * **Shielding:** The "Shielded" design minimizes Electromagnetic Interference (EMI), making it suitable for densely packed circuit boards where noise crosstalk must be avoided. * **Termination:** Lead-free (RoHS compliant), typically featuring tin-over-copper terminations for reliable reflow soldering. * **Form Factor:** The UP2B designation refers to a specific physical footprint (approximately 14mm x 10.4mm). --- ### 3. Part Number Breakdown The part number follows a specific nomenclature: * **UP2B:** The series name and physical size/package style. * **150:** The inductance code. The first two digits are significant figures, and the third is the multiplier (15 + 0 zeros = **15 µH**). * **R:** Indicates that the product is RoHS compliant. --- ### 4. Common Applications This component is widely used in power management circuits, including: 1. **Buck/Boost Converters:** Used for energy storage and smoothing in voltage regulation. 2. **Laptops & Tablets:** Integrated into the internal power supply rails. 3. **LED Drivers:** Provides stable current for high-brightness lighting applications. 4. **Distributed Power Systems:** Used in industrial and telecommunications equipment. ---