The **UP1B-R47-R** is a specific electronic component belonging to the power inductor family. It is manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). This part is widely used in DC-DC converters and power management circuits. --- ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the UP1B-R47-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.47 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 6.0 Amps | | **Saturation Current (Isat)** | 9.5 Amps | | **DC Resistance (DCR)** | 8.3 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | | **Shielding** | Shielded (Drum Core) | --- ### 2. Key Features * **High Power Density:** The "UP" (Uni-Pac) series is designed to handle high current in a relatively small footprint. * **Magnetic Shielding:** The component is shielded, which minimizes Electromagnetic Interference (EMI) with surrounding components—a critical feature for compact PCB designs. * **Low Core Loss:** It uses materials optimized for high-frequency switching power supplies. * **RoHS Compliant:** The "-R" suffix at the end of the part number indicates compliance with RoHS standards (Lead-free). --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying similar parts in the same series: | Segment | Meaning | | :--- | :--- | | **UP** | Series Name (Uni-Pac) | | **1B** | Physical size/dimension code | | **R47** | Inductance value (R = Decimal point; 0.47 µH) | | **-R** | RoHS Compliant | --- ### 4. Typical Applications The UP1B-R47-R is commonly found in: 1. **Buck/Boost Converters:** Used for voltage regulation in battery-powered devices. 2. **Laptops and Tablets:** Powering CPUs and GPUs where high current and low profile are required. 3. **Industrial Electronics:** Distributed power systems and DC-DC modules. 4. **LED Lighting:** Used in driver circuits for constant current regulation.