The **CTX300-1-R** is a specific electronic component, typically identified as a **High-Current Power Inductor** manufactured by **Eaton (formerly Cooper Bussmann)**. It belongs to the CTX series, designed for high-density power applications. --- ## 1. Technical Specifications The following table outlines the primary electrical and physical characteristics of the CTX300-1-R: | Parameter | Specification | | :--- | :--- | | **Inductance** | 30.0 µH (Microhenries) | | **Tolerance** | ±20% | | **Current Rating (rms)** | ~1.6 A to 2.1 A (varies by thermal rise) | | **DC Resistance (DCR)** | ~0.095 to 0.125 Ω (Max) | | **Mounting Type** | Surface Mount (SMD) | | **Package / Case** | Custom Toroidal / Shielded | | **Operating Temperature** | -40°C to +125°C | --- ## 2. Key Electronic Components & Features ### A. Core Material The device uses a **powdered iron or ferrite toroidal core**. * **Toroidal Design:** The circular shape ensures that the magnetic flux is contained within the core, significantly reducing Electromagnetic Interference (EMI) which can affect nearby sensitive circuits. ### B. Winding Structure * **Copper Wire:** High-grade insulated copper wire is wound around the core. The "1-R" suffix often indicates a specific winding configuration or RoHS compliance. * **Termination:** The ends of the wire are soldered to a lead frame or directly to pads for surface mounting on a PCB. ### C. Shielding * Because it is a high-current inductor, the physical housing provides **magnetic shielding**. This prevents the inductor from "talking" to other components through magnetic fields, which is critical in compact DC-DC converters. --- ## 3. Applications The CTX300-1-R is commonly found in the following electronic circuits: 1. **DC-DC Converters:** Acts as an energy storage element in Buck, Boost, or Sepic converters. 2. **Input/Output Filters:** Used to smooth out ripples in power supplies to provide clean DC voltage. 3. **Industrial Controls:** Integrated into PLCs and sensors where robust power handling is required. 4. **Telecommunications:** Used in base stations and networking hardware due to its high efficiency and low EMI profile. --- ## 4. Typical Footprint (SMD) Below is a conceptual representation of how the component is laid out on a board: ```text [ TOP VIEW ] _____________________ | | | ( EATON ) | <-- Branding | CTX300-1-R | <-- Part Number | [CORE] | |_____________________| |__| |__| <-- Solder Pads ``` ---