The **CTX500-2-52LP-R** is a high-performance power inductor, specifically a **Toroidal Choke**, manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). These components are primarily used in power conversion circuits to filter noise and store energy. --- ### 1. Technical Specifications The part number follows a specific nomenclature that defines its electrical characteristics: | Feature | Specification | | :--- | :--- | | **Inductance** | 500 µH (Microhenries) | | **Current Rating (DC)** | ~2.0 Amperes (approximate based on series) | | **Mounting Type** | Surface Mount (SMD) / Low Profile | | **Core Material** | Powdered Iron (Type -52) | | **Configuration** | Toroidal (Ring-shaped) | | **RoHS Compliant** | Yes (indicated by the **-R** suffix) | --- ### 2. Breakdown of the Part Number Understanding the alphanumeric code helps identify the physical and electrical limits: * **CTX**: The product family (Coiltronics Toroidal Inductors). * **500**: Represents the nominal inductance value (500 µH). * **2**: Often refers to the rated current or size code within the family. * **52**: Specifies the **Core Material**. Material -52 is a popular powdered iron core known for low core losses at high frequencies (up to 500kHz). * **LP**: Stands for **Low Profile**, indicating the component has a reduced height for compact PCB designs. * **R**: Indicates **RoHS compliance** (lead-free). --- ### 3. Key Electronic Functions The CTX500-2-52LP-R serves three primary roles in a circuit: 1. **Energy Storage:** In switching regulators (Buck, Boost, or Flyback), it stores energy in its magnetic field during the "on" cycle and releases it during the "off" cycle. 2. **Differential Mode Filtering:** It suppresses high-frequency noise on power lines, preventing electromagnetic interference (EMI) from affecting other components. 3. **Ripple Reduction:** It smooths out the pulsating DC output from a power supply to provide a steady voltage. --- ### 4. Common Applications Due to its low profile and powdered iron core, this inductor is typically found in: * **DC-DC Converters:** Point-of-load power supplies for servers and computers. * **Battery Powered Systems:** Where space and efficiency are critical. * **Industrial Electronics:** Filtering for sensors and control boards. * **Telecommunications:** Signal line filtering and power management.