The **CTX5-1A-R** is a specific electronic component categorized as a **surface-mount power inductor**, part of the Octa-Pac® series manufactured by Coiltronics (now a brand under Eaton/Bussmann). --- ### 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the CTX5-1A-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 5.2 $\mu$H | | **Current Rating (rms)** | 1.84 Amperes | | **DCR (Direct Current Resistance)** | 0.0461 Ohms (Max) | | **Configuration** | Toroidal (Dual Winding) | | **Mounting Type** | Surface Mount (SMD) | | **Termination** | RoHS Compliant (Lead-free) | --- ### 2. Key Features and Design * **Octa-Pac® Series:** This series is known for its high power density and low radiated magnetic interference (EMI). * **Toroidal Core:** The use of a toroidal (ring-shaped) core helps in containing the magnetic flux, making it highly efficient and minimizing interference with surrounding components. * **Dual Winding Versatility:** The "1A" designation often refers to a specific winding configuration. These inductors typically have two windings that can be connected in: * **Series:** For higher inductance. * **Parallel:** For higher current capacity. * **Material:** It typically utilizes a powdered iron core, which provides good saturation characteristics for power applications. --- ### 3. Common Applications The CTX5-1A-R is designed for high-frequency power conversion environments, including: 1. **DC-DC Converters:** Used in buck, boost, and forward converters. 2. **Voltage Regulator Modules (VRMs):** Found in computing and telecommunications hardware. 3. **Noise Filtering:** Acts as an EMI/RFI filter for power lines. 4. **Signal Isolation:** Due to the dual winding, it can sometimes be used as a 1:1 transformer or for isolation purposes in low-power circuits. --- ### 4. Part Number Breakdown * **CTX:** Series prefix (Coiltronics Octa-Pac). * **5:** Base inductance/Size code. * **1A:** Winding/Electrical configuration. * **R:** RoHS compliant (Lead-free).