The **CTX210607-R** is a specific surface-mount high-frequency transformer, typically part of the **Octa-Pac®** or **ECONO-PAC™** series manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). These components are versatile power inductors/transformers consisting of two identical windings. --- ## 1. Technical Specifications Below are the typical characteristics for this class of component: | Feature | Specification | | :--- | :--- | | **Inductance** | ~6.4 µH (Typical, per winding) | | **Current Rating (Irms)** | ~2.5 A to 3.5 A (Depending on configuration) | | **DC Resistance (DCR)** | ~0.045 Ω - 0.055 Ω | | **Mounting Type** | Surface Mount (SMD) | | **Core Material** | Powder Iron / Ferrite | | **Operating Temperature** | -40°C to +125°C | --- ## 2. Key Features and Design The CTX210607-R is designed with a **dual-winding architecture**, which provides engineers with several integration options: * **1:1 Transformer:** Can be used for signal isolation or voltage transformation. * **Coupled Inductor:** Used in SEPIC (Single-Ended Primary-Inductor Converter) or Flyback topologies to provide energy storage and transfer. * **Series/Parallel Inductor:** * *Series:* Connect windings in series to quadruple the inductance and handle the base current. * *Parallel:* Connect windings in parallel to maintain base inductance but double the current capacity. --- ## 3. Common Applications Due to its compact size and high-frequency capabilities, it is found in the following circuits: 1. **DC-DC Converters:** Ideal for Buck, Boost, and SEPIC regulators. 2. **Power Over Ethernet (PoE):** Used in power extraction circuits for networking hardware. 3. **EMI Filtering:** Can function as a common-mode choke to filter out high-frequency noise. 4. **Voltage Isolation:** Providing basic galvanic isolation between two circuit stages. --- ## 4. Part Number Breakdown The "R" suffix in the part number (CTX210607-**R**) is a critical indicator: * **RoHS Compliant:** The "R" signifies that the component meets the Restriction of Hazardous Substances directive (Lead-free).