The **CTX0.68-2P-R** is a high-performance, surface-mount (SMD) power inductor part of the **OCTA-PAC® PLUS** series manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). These components are known for their dual-winding design, which allows for versatile circuit configurations. --- ### 1. Key Technical Specifications The following table summarizes the primary electrical characteristics of the CTX0.68-2P-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.68 µH (nominal) | | **Current Rating (Irms)** | ~12.2 Amperes | | **DC Resistance (DCR)** | ~0.0039 Ohms (Max) | | **Winding Configuration** | Dual Winding (1:1 Ratio) | | **Core Material** | Iron Powder (High saturation) | | **Operating Temperature** | -40°C to +125°C | | **Package Size** | OCTA-PAC® PLUS Size 2P | --- ### 2. Physical Construction and Packaging The CTX0.68-2P-R is designed for durability and efficiency in high-density power applications: * **Toroidal Geometry:** Uses a toroidal core which offers self-shielding properties, reducing Electromagnetic Interference (EMI). * **Dual Winding:** Contains two separate copper windings. These can be connected in **series** to increase inductance or in **parallel** to increase current handling capacity. * **Surface Mount:** Features rugged SMT leads suitable for automated pick-and-place assembly. --- ### 3. Common Applications Due to its high current capability and low DCR, this inductor is typically used in: 1. **DC-DC Converters:** Buck, boost, and forward converters. 2. **SEPIC Topology:** The dual winding makes it ideal for Single-Ended Primary-Inductor Converters. 3. **Power Inverters:** Used in filtering stages. 4. **Computer Power:** VRM (Voltage Regulator Modules) for processors. --- ### 4. Connection Logic (Code Example) When implementing this in a PCB design, the wiring determines the performance. Here is a conceptual representation of how the pins are usually handled: ```cpp // Logic for CTX Dual Winding Connection if (Configuration == "Parallel") { // Connect Pin 1 to 4, Pin 2 to 3 Resulting_Inductance = L_nominal; Current_Capacity = Irms * 2; } else if (Configuration == "Series") { // Connect Pin 2 to 4, Input 1, Output 3 Resulting_Inductance = L_nominal * 4; Current_Capacity = Irms; } ``` ---