## Overview of UP2B-101-R The **UP2B-101-R** is a high-performance, shielded power inductor manufactured by **Eaton (formerly Coiltronics)**. It is part of the Uni-Pac (UP) series, specifically designed for surface-mount applications requiring high energy storage and low electromagnetic interference (EMI). --- ### Technical Specifications The following table outlines the primary electrical and physical characteristics of the UP2B-101-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | $100 \mu H$ | | **Tolerance** | $\pm 20\%$ | | **Current Rating (Saturation)** | $1.04 A$ | | **Current Rating (RMS)** | $1.16 A$ | | **DC Resistance (DCR)** | $0.250 \Omega$ (Max) | | **Operating Temperature** | $-40^\circ C \text{ to } +125^\circ C$ | | **Package / Case** | SMD (13.9mm x 9.4mm x 5.9mm) | | **Shielding** | Ferrite Core (Shielded) | --- ### Core Features 1. **Magnetic Shielding:** The component is designed with a ferrite drum and sleeve construction. This minimizes EMI, making it suitable for noise-sensitive circuits. 2. **High Power Density:** Despite its small footprint, it provides significant energy storage, making it ideal for compact power conversion modules. 3. **Low DCR:** The low direct current resistance ensures minimal power loss through heat, increasing the overall efficiency of the power supply. 4. **RoHS Compliant:** The "-R" suffix indicates that the part is lead-free and meets RoHS environmental standards. --- ### Common Applications * **Buck/Boost Converters:** Used as the energy storage element in DC-DC converters to step voltages up or down. * **Computer Peripherals:** Found in laptop power supplies, servers, and storage drives. * **Industrial Electronics:** Used in battery chargers, LED drivers, and distributed power systems. * **Filtering:** Acts as a low-pass filter to smooth out ripples in DC power lines. --- ### PCB Layout Considerations When designing a board for the UP2B-101-R, consider the following code-like approach for pad layout dimensions: ```text // Recommended Land Pattern (Dimensions in mm) Pad_Width = 3.30; Pad_Length = 3.81; Pad_Gap = 7.37; Total_Area = 14.0 x 9.5; ``` *Note: Always keep high-current traces wide and short to minimize parasitic inductance and thermal buildup.*