The **CTX8-3P-R** is a specialized electronic component categorized as a **high-frequency power inductor**, specifically part of the **OCTA-PAC® PLUS** series manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). These components are designed for high-density power applications where space and efficiency are critical. --- ### 1. Key Technical Specifications The "3P" designation indicates it belongs to the Plus series, which offers higher current ratings and lower DC resistance (DCR) compared to standard models. | Parameter | Value/Description | | :--- | :--- | | **Inductance** | 8.24 µH (at 0 ADC) | | **Rated Current (Irms)** | ~2.63 Amps | | **Peak Current (Isat)** | ~3.43 Amps | | **DCR (DC Resistance)** | ~0.0461 Ohms (max) | | **Configuration** | Toroidal core with 6-pin surface mount (SMT) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Functional Characteristics The CTX8-3P-R is not a simple inductor; it features **multiple windings** that provide significant circuit flexibility. * **Toroidal Core:** Uses a powdered iron core material which provides excellent magnetic flux containment (low EMI) and high saturation levels. * **Multiple Windings:** It typically contains two separate windings. These can be connected in: * **Series:** For higher inductance. * **Parallel:** For higher current capacity. * **Surface Mount Design:** The "R" in the suffix usually denotes **RoHS compliance**. The package is designed for automated pick-and-place assembly. --- ### 3. Common Applications Due to its high power density and versatility, the CTX8-3P-R is used in various power conversion stages: 1. **DC-DC Converters:** Acts as a buck, boost, or forward converter inductor. 2. **Flyback Transformers:** Can be used as a 1:1 coupled inductor for flyback topologies. 3. **SEPIC Converters:** The dual-winding nature makes it ideal for Single-Ended Primary-Inductor Converters. 4. **Noise Filtering:** Used as a common-mode choke or differential-mode filter for power supplies. --- ### 4. Circuit Symbol & Connection In a schematic, this part is represented as two coupled inductors. ```text Pin 1 ●-------) )-------● Pin 6 (Winding A) ) ) Pin 2 ●-------) )-------● Pin 5 (Winding B) ``` *Note: Pins 3 and 4 are typically used for mechanical stability or custom routing depending on the specific footprint layout.* ---