The **CTX200-1-R** is a high-performance, surface-mount power inductor designed by Eaton (formerly Cooper Bussmann). It belongs to the **OCTA-PAC®** series, known for its versatility and high power density. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Inductance** | 200 µH (Nominal) | | **Current Rating (rms)** | 0.44 Amps | | **DC Resistance (DCR)** | 1.157 Ohms (Max) | | **Core Material** | Powdered Iron | | **Mounting Type** | Surface Mount (SMD) | | **Configuration** | Toroidal / Dual Winding | --- ### 2. Core Features and Design The "R" suffix in the part number indicates that the component is **RoHS compliant**. The specific design architecture offers several electronic advantages: #### A. Dual Winding Versatility The CTX200-1-R features two separate windings on a single core. This allows the component to function in three different modes depending on how it is wired to the PCB: 1. **Series Connection:** Increases total inductance. 2. **Parallel Connection:** Increases current handling capability. 3. **1:1 Transformer:** Acts as a coupled inductor or isolation transformer. #### B. Toroidal Geometry Because it uses a toroidal (ring-shaped) core, it offers: * **Low Electromagnetic Interference (EMI):** The magnetic field is contained within the core. * **High Efficiency:** Lower leakage flux compared to traditional E-core inductors. --- ### 3. Common Applications Due to its high inductance and compact surface-mount footprint, it is typically used in the following electronic circuits: * **DC-DC Converters:** Specifically in Buck, Boost, and Forward converters. * **Switch Mode Power Supplies (SMPS):** Used for energy storage and output filtering. * **Signal Filtering:** Effective for EMI suppression in power lines. * **Isolation:** Used in circuits requiring a 1:1 turns ratio for basic signal or power isolation. --- ### 4. Thermal and Environmental Performance * **Operating Temperature:** Typically rated for -40°C to +125°C. * **Packaging:** Supplied on tape and reel for automated pick-and-place assembly.