The **UP2B-1R0-R** is a high-performance, shielded power inductor manufactured by Eaton (formerly Bussmann/Coiltronics). It is widely used in DC-DC converters and power management circuits. --- ### ## Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 1.0 µH | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 5.9 Amps | | **Saturation Current (Isat)** | 11.0 Amps | | **DC Resistance (DCR)** | 9.1 mΩ (Max) | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) | | **Shielding** | Shielded (Drum Core) | --- ### ## Key Features & Construction * **Shielded Design:** The inductor is magnetically shielded, which minimizes Electromagnetic Interference (EMI) and prevents the magnetic field from affecting nearby components. * **High Power Density:** It is designed to handle high current levels relative to its physical footprint. * **Material:** It typically utilizes a ferrite core, which provides low core losses at high frequencies. * **Durability:** The "R" suffix indicates RoHS compliance, meaning it is lead-free and environmentally friendly. --- ### ## Common Applications The UP2B-1R0-R is primarily found in power regulation circuits: 1. **DC-DC Converters:** Used as an energy storage element in Buck, Boost, or SEPIC converters. 2. **Voltage Regulator Modules (VRM):** Common in laptops, servers, and desktop motherboards. 3. **Battery Powered Systems:** Ideal for portable electronics due to its high efficiency and low DCR. 4. **Industrial Controls:** Used in distributed power systems where EMI suppression is critical. --- ### ## Decoding the Part Number ```text UP 2B - 1R0 - R | | | | | | | └── RoHS Compliant | | └──────── Inductance Value (1.0 microhenries) | └─────────────── Size Code (Physical dimensions) └─────────────────── Series Name (Uni-Pac) ```