## Technical Overview of UP1B-330-R The **UP1B-330-R** is a high-performance, shielded power inductor designed by Eaton (formerly Bussmann/Coiltronics). It is part of the Uni-Pac (UP) series, specifically engineered for high power density and reliability in compact electronic circuits. --- ### 1. Key Technical Specifications | Parameter | Specification | | :--- | :--- | | **Inductance** | 33 $\mu$H | | **Tolerance** | ±20% | | **Current Rating (Irms)** | 1.1 Amps | | **Saturation Current (Isat)** | 1.4 Amps | | **DC Resistance (DCR)** | 0.203 Ohms (Typ) | | **Package / Case** | SMD (Surface Mount Device) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Core Components and Construction The "electronic parts" or physical makeup of this component involve several specialized materials: * **Ferrite Core:** The internal core is made of ferrite, which provides high magnetic permeability while keeping energy losses (hysteresis) very low at high frequencies. * **Winding:** High-quality copper wire is wound around the core. The "330" in the part number signifies the inductance value (33 followed by 0 zeros). * **Magnetic Shielding:** The component is designed to minimize EMI (Electromagnetic Interference). The construction ensures that the magnetic field is largely contained within the inductor, preventing it from interfering with nearby sensitive components. * **Terminations:** The pads are lead-free (indicated by the **-R** suffix, meaning RoHS compliant) and designed for reliable reflow soldering on PCBs. --- ### 3. Part Number Breakdown Understanding the nomenclature helps in identifying its characteristics: 1. **UP1B**: The series designation. "UP" stands for Uni-Pac, and "1B" refers to the specific physical size/footprint. 2. **330**: The inductance code. $33 \times 10^0 = 33 \mu$H. 3. **-R**: Indicates RoHS compliance (lead-free materials). --- ### 4. Common Applications Due to its balance of size and current handling, the UP1B-330-R is typically used in: * **DC-DC Converters:** Acts as an energy storage element in buck or boost regulators. * **Battery Powered Equipment:** Used in handheld devices where efficiency and space are critical. * **Filtering:** Used in power supply circuits to smooth out ripples and reduce noise.