The **CTX110605-R** is a specific electronic component belonging to the **inductor/transformer** family, manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). It is primarily categorized as a **Configurable Dual-Winding Inductor/Transformer**. --- ### 1. Key Technical Specifications | Parameter | Value | | :--- | :--- | | **Inductance** | ~6.4 μH (Parallel) / ~25.7 μH (Series) | | **Current Rating (Irms)** | ~2.63 A (Parallel) | | **DCR (Direct Current Resistance)** | ~0.046 Ω | | **Operating Temperature** | -40°C to +125°C | | **Package / Case** | Surface Mount (SMD) - OCTA-PAC® Size 1 | | **RoHS Status** | Compliant (R suffix denotes RoHS) | --- ### 2. Physical Construction and Design The CTX110605-R is part of the **OCTA-PAC®** series, which features: * **Dual Windings:** It contains two separate copper windings on a single toroidal core. * **Toroidal Core:** Uses a powdered iron core material which provides high saturation flux density and low EMI (Electromagnetic Interference) compared to open-core designs. * **Shielding:** The toroidal shape inherently self-shields, reducing the likelihood of interfering with nearby sensitive components. --- ### 3. Functional Applications Because it has two independent windings, this part is highly versatile and can be used in several circuit configurations: 1. **Buck/Boost Converter:** Used as a power inductor for voltage regulation. 2. **1:1 Transformer:** Can be used for isolated flyback converters or as a SEPIC (Single-Ended Primary-Inductor Converter) inductor. 3. **Common Mode Choke:** When wired correctly, it can filter out high-frequency noise in power lines. 4. **Series/Parallel Inductor:** * **Parallel:** Increases current capacity but keeps inductance low. * **Series:** Increases total inductance but keeps current capacity limited to a single winding's rating. --- ### 4. Circuit Implementation Diagram The component typically has four pins. Here is how they are generally utilized: ```text Pin 1 (Start W1) ●-------(Winding 1)-------○ Pin 2 (End W1) Pin 4 (Start W2) ●-------(Winding 2)-------○ Pin 3 (End W2) ``` * **For Series:** Connect Pin 2 to Pin 4. Input at Pin 1, Output at Pin 3. * **For Parallel:** Connect Pin 1 to Pin 4 (Input) and Pin 2 to Pin 3 (Output). ---