The **CTX210407-R** is a high-performance power inductor, part of the **Octa-Path** series originally developed by Cooper Bussmann (now part of Eaton). It is specifically designed for high-power density applications and multi-phase regulators. --- ### 1. Key Technical Specifications Below are the primary electrical characteristics for the CTX210407-R: | Parameter | Value / Specification | | :--- | :--- | | **Inductance** | 0.40 µH (Nominal) | | **Isat (Saturation Current)** | ~83 Amperes | | **Irms (Heating Current)** | ~55 Amperes | | **DCR (DC Resistance)** | 0.45 mΩ (Max) | | **Tolerance** | ±20% | | **Operating Temperature** | -40°C to +125°C | --- ### 2. Core Features and Materials The "R" suffix in the part number denotes **RoHS compliance**. The component is engineered with several specific design choices: * **SMD/SMT Design:** It is a surface-mount device designed for automated pick-and-place assembly. * **High Current Handling:** Due to its extremely low DCR (Direct Current Resistance), it minimizes power loss and heat generation, allowing it to handle very high current peaks. * **Low Core Loss:** It utilizes advanced ferrite core materials that maintain efficiency at high switching frequencies (typically up to 2MHz+). * **Magnetic Shielding:** The part is shielded to minimize Electromagnetic Interference (EMI) with surrounding components on the PCB. --- ### 3. Common Applications The CTX210407-R is typically found in high-demand power circuitry where space is limited but power requirements are high: 1. **Voltage Regulator Modules (VRMs):** Used in CPU and GPU power delivery systems for servers and high-end workstations. 2. **Multi-phase Buck Converters:** Ideal for interleaved power stages where high current is distributed across multiple inductors. 3. **Data Center Equipment:** Powering switches, routers, and storage arrays. 4. **Point of Load (POL) Converters:** Used in distributed power architectures. --- ### 4. Dimensional Data | Dimension | Metric (mm) | | :--- | :--- | | **Length** | 13.5 mm | | **Width** | 13.0 mm | | **Height** | 8.0 mm | ---