The **CTX20-1-52LP-R** is a specific electronic component manufactured by **Eaton (formerly Coiltronics)**. It belongs to the **OCTA-PAC® PLUS** series of power inductors/transformers. Below is a detailed breakdown of its specifications, construction, and applications. --- ## 1. Technical Specifications The "CTX" series is known for its versatility, often featuring dual windings that allow the component to be used as an inductor, a coupled inductor, or a 1:1 transformer. | Feature | Specification | | :--- | :--- | | **Manufacturer** | Eaton (Bussmann/Coiltronics) | | **Inductance (Parallel)** | 19.3 µH (approx. 20 µH nominal) | | **Inductance (Series)** | 77.2 µH | | **Current Rating (Isat)** | ~1.67 A to 3.34 A (Configuration dependent) | | **DC Resistance (DCR)** | ~0.065 Ω to 0.262 Ω (Configuration dependent) | | **Core Material** | Powered Iron (Material -52) | | **Mounting Type** | Surface Mount (SMD) | | **Operating Temperature** | -40°C to +125°C | --- ## 2. Part Number Breakdown Understanding the nomenclature helps identify the component's capabilities: * **CTX**: Series designation (OCTA-PAC). * **20**: Nominal inductance value in microhenries (µH). * **1**: Size/Package dimension code. * **52**: Core Material. Material -52 is a low-core-loss iron powder often used in high-frequency applications. * **LP**: "Low Profile" version. * **R**: RoHS Compliant. --- ## 3. Key Features & Construction ### Dual Winding Versatility The device contains two separate windings. This allows the user to configure the part in three ways: 1. **Series Inductor:** Connecting the windings in series for higher inductance. 2. **Parallel Inductor:** Connecting the windings in parallel for higher current handling. 3. **1:1 Transformer:** Using one winding as a primary and the other as a secondary (Isolation). ### Core Material Advantages The **-52 material** (Blue/Green core) is optimized for: * High frequency performance (up to 500 kHz+). * High saturation flux density. * Lower core losses compared to standard iron powder. --- ## 4. Common Applications The CTX20-1-52LP-R is typically found in power management circuits, including: * **DC-DC Converters:** Buck, Boost, and SEPIC topologies. * **Computer Peripherals:** Power supplies for laptops and desktops. * **Battery Powered Equipment:** Due to its compact SMD low-profile design. * **Filter Inductors:** Used for noise suppression in output stages. ---