The **UP5-100-R** is a high-performance, shielded power inductor part of the **OCTA-PAC® PLUS** series manufactured by **Eaton (formerly Coiltronics)**. These components are primarily used in DC-DC converters and power management circuits. --- ### 1. Key Technical Specifications The UP5-100-R is a "dual-winding" inductor, meaning it contains two separate coils that can be connected in series or parallel. | Parameter | Series Connection | Parallel Connection | | :--- | :--- | :--- | | **Inductance ($L$)** | 10.5 $\mu$H | 2.6 $\mu$H | | **Peak Current ($I_{sat}$)** | 22.0 A | 44.0 A | | **RMS Current ($I_{rms}$)** | 9.07 A | 18.1 A | | **DCR (Resistance)** | 14.5 m$\Omega$ | 3.6 m$\Omega$ | ### 2. Physical Characteristics * **Core Material:** Iron powder (high saturation flux density). * **Shielding:** Fully shielded to minimize Electromagnetic Interference (EMI). * **Mounting:** Surface Mount Device (SMD). * **Form Factor:** Large square footprint (approx. 18.2mm x 18.2mm). * **Temperature Range:** -40°C to +125°C. ### 3. Electronic Functionality The "dual winding" design provides significant versatility for circuit designers: * **1:1 Coupled Inductor:** Can be used in SEPIC or Zeta converter topologies. * **Transformer:** Can act as a 1:1 ratio transformer for isolation or flyback applications. * **Flexible Inductance:** * **Series:** Doubles the turns (higher inductance, lower current). * **Parallel:** Halves the resistance (lower inductance, higher current). ### 4. Typical Applications * **Buck/Boost Converters:** Used as the main energy storage element. * **Battery Chargers:** High current handling makes it ideal for fast-charging circuits. * **Industrial Power Supplies:** Used in distributed power systems where EMI suppression is critical. * **Voltage Regulator Modules (VRM):** Commonly found in high-performance computing power rails. ### 5. Part Number Breakdown * **UP5:** Size/Series designation (Size 5 is one of the larger OCTA-PAC sizes). * **100:** Inductance code (10 $\mu$H in the standard configuration). * **-R:** RoHS compliant (Lead-free). ---