The **CTX200-3P-R** is a specific electronic component belonging to the **CTX Series** of power inductors, manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). Below is a detailed breakdown of its specifications and electronic characteristics. ### 1. General Specifications The CTX200-3P-R is a high-current, high-power density toroidal inductor designed for various power conversion applications. | Feature | Specification | | :--- | :--- | | **Manufacturer** | Eaton (Coiltronics) | | **Inductance** | 198.5 µH (Typical) | | **Current Rating (Irms)** | ~0.72 Amps | | **DC Resistance (DCR)** | ~0.432 Ohms (Max) | | **Core Material** | Powder Iron (Kool Mu or similar) | | **Mounting Type** | Through-Hole (Vertical or Horizontal options) | --- ### 2. Part Number Breakdown The suffix and prefix provide critical information regarding the construction: * **CTX**: Series designation for Coiltronics Toroidal Inductors. * **200**: Represents the size and energy storage capability (specific to the product family). * **3P**: Indicates the winding configuration and physical size (Size 3). * **-R**: Denotes **RoHS compliance**, meaning the part is lead-free. --- ### 3. Electronic Characteristics #### A. Toroidal Design The use of a doughnut-shaped (toroidal) core ensures that the magnetic flux is contained within the core. This results in: * **Low Electromagnetic Interference (EMI):** Minimal stray magnetic fields. * **High Efficiency:** Lower core losses at power frequencies. #### B. Material Properties As a "3P" variant, it typically utilizes a **Powder Iron Core**. Unlike ferrite cores that saturate abruptly, powder iron provides a **soft saturation** curve. This means the inductance drops gradually as the current increases, rather than failing suddenly. #### C. Thermal Performance The part is rated for industrial temperature ranges (typically **-40°C to +125°C**). The `Irms` rating is based on a temperature rise (usually 40°C) above the ambient temperature. --- ### 4. Common Applications This part is commonly used in the following electronic circuits: 1. **DC-DC Converters:** Used for energy storage in buck, boost, or buck-boost topologies. 2. **Output Filters:** Smoothing out ripple current in switching power supplies. 3. **EMI Suppression:** Acting as a differential mode choke to filter out high-frequency noise. 4. **Renewable Energy:** Used in solar inverters and battery management systems. ---