## Overview of CTX20-10-52LP-R The **CTX20-10-52LP-R** is a high-performance, surface-mount (SMT) power inductor belonging to the **OCTA-PAC® PLUS** series, manufactured by Eaton (formerly Bussmann/Coiltronics). These components are known for their versatile dual-winding design. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Inductance (Parallel)** | 19.34 µH | | **Inductance (Series)** | 77.36 µH | | **Rated Current (Isat)** | ~11.5 A (Parallel configuration) | | **DC Resistance (DCR)** | ~0.0157 Ω (Parallel) | | **Mounting Type** | Surface Mount (SMD) | | **Core Material** | Powdered Iron (Material 52) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Part Number Breakdown Understanding the nomenclature helps identify the physical and electrical characteristics: * **CTX**: Series designation (Coiltronics). * **20**: Size code (Physical dimensions of the core/package). * **10**: Nominal inductance value (in µH). * **52**: Core material type (Carbonyl iron, optimized for lower frequency/high power). * **LP**: Low Profile (Reduced height for compact PCB designs). * **R**: RoHS compliant. --- ### 3. Core Features and Applications #### Dual Winding Versatility The most distinct feature of this part is that it contains **two separate windings**. This allows engineers to use it in three different ways: 1. **Series Connection:** Increases inductance (4x the base value). 2. **Parallel Connection:** Increases current handling capability. 3. **1:1 Transformer:** Can be used as a coupled inductor for SEPIC or Flyback converters. #### Common Applications * **DC-DC Converters:** Used as a buck, boost, or buck-boost inductor. * **SEPIC Topology:** Ideal for battery-powered devices where the input voltage can be higher or lower than the output. * **Power Supplies:** Common in industrial, computer, and telecommunications equipment. * **Noise Filtering:** Effective as a common-mode or differential-mode choke. --- ### 4. Physical Dimensions (Approximate) The "20" size typically follows these dimensions: * **Length:** ~15.0 mm * **Width:** ~13.0 mm * **Height (LP):** ~6.35 mm (Lower than standard CTX units)