The **CTX210605-R** is a high-performance power inductor, part of the **Octa-Path** series manufactured by Eaton (formerly Bussmann/Coiltronics). These components are known for their versatile design, featuring multiple windings that allow for various circuit configurations. --- ### 1. Key Technical Specifications | Feature | Specification | | :--- | :--- | | **Inductance** | 6.25 µH to 100 µH (Configurable) | | **Current Rating (Isat)** | Approx. 1.25A to 10A (Depending on configuration) | | **Number of Windings** | 8 identical windings | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD) | | **Shielding** | Toroidal Shielded (Low EMI) | --- ### 2. Functional Design: The "Octa-Path" The defining characteristic of the CTX210605-R is its **eight separate windings**. This unique construction provides engineers with extreme flexibility: * **Configurability:** The 8 windings can be connected in series or parallel to achieve different inductance values and current ratings. * **Transformers:** It can be used as a 1:1 up to 1:7 turns ratio transformer. * **Coupled Inductors:** Ideal for multi-phase buck converters or SEPIC topologies. --- ### 3. Common Applications Due to its shielded toroidal design and high efficiency, it is typically found in: 1. **DC-DC Converters:** SEPIC, Cuk, Flyback, and Buck/Boost topologies. 2. **Power Over Ethernet (PoE):** Providing power isolation and regulation. 3. **Battery Powered Systems:** Where space and efficiency are critical. 4. **EMI Filtering:** Functioning as a high-density common-mode choke. --- ### 4. Circuit Implementation Example When wiring the device, the relationship between inductance ($L$) and current ($I$) changes based on how the windings are grouped: ```cpp // Logic for Windings Configuration (Simplified) If (Windings == Parallel) { Inductance = L_base; // Stays low Current_Capacity = I_base * 8; // Maximize current } else if (Windings == Series) { Inductance = L_base * 64; // Inductance increases by N squared Current_Capacity = I_base; // Current limited by single wire gauge } ``` ---