## Technical Overview of the UP4B-100-R Inductor The **UP4B-100-R** is a high-power, shielded surface-mount (SMD) inductor manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). It is part of the **Uni-Pac™ (UP) series**, specifically designed for high-density power applications. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | 10.0 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 7.6 Amps | | **Saturation Current (Isat)** | 11.0 Amps | | **DC Resistance (DCR)** | 0.0123 Ω (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package/Case** | 22.2mm x 15.2mm (Height: 8.0mm) | --- ### 2. Core Features and Construction * **Magnetic Shielding:** The "UP4B" designation indicates a shielded construction. This minimizes Electromagnetic Interference (EMI), making it suitable for noise-sensitive environments like medical or telecommunications equipment. * **High Power Density:** The inductor uses a flat-wire or robust winding technology to achieve very low DCR (DC Resistance). This results in lower heat generation and higher efficiency. * **RoHS Compliant:** The "-R" suffix at the end of the part number signifies that the component is fully compliant with RoHS (Restriction of Hazardous Substances) standards. * **Ferrite Core Material:** Utilizes a ferrite core which provides excellent saturation characteristics, ensuring the inductance remains stable even under high current loads. --- ### 3. Common Applications The UP4B-100-R is typically found in the following electronic circuits: 1. **DC-DC Converters:** Used as a storage element in buck, boost, and buck-boost regulators. 2. **Point of Load (POL) Power Supplies:** Ideal for high-current GPU or CPU power rails. 3. **Industrial Controls:** Used in motor drivers and PLC power modules. 4. **Battery Powered Systems:** Where efficiency is critical to extending battery life. --- ### 4. Footprint and Mounting (SMD) The component is designed for **Surface Mount Technology (SMT)**. Below is a simplified representation of the landing pattern characteristics: ```text Physical Dimensions (Approx): Length: 22.23 mm Width: 15.24 mm Height: 7.87 mm (Max) ``` ---