The **CTX33-3P-R** is a specific electronic component belonging to the **CTX Series** of power inductors, primarily manufactured by **Eaton (formerly Cooper Bussmann)**. It is a high-performance, shielded power inductor designed for DC-DC converters and energy storage applications. --- ### 1. Technical Specifications Below are the primary technical parameters for the CTX33-3P-R: | Feature | Specification | | :--- | :--- | | **Inductance** | 33 $\mu$H | | **Tolerance** | ±20% | | **Current Rating (Irms)** | ~1.4 Amps | | **Saturation Current (Isat)** | ~1.1 Amps | | **DC Resistance (DCR)** | ~0.147 Ohms (Max) | | **Operating Temperature** | -40°C to +85°C | | **Mounting Type** | Surface Mount (SMD) | | **Package / Case** | Size 3P (Approx. 9.4mm x 9.4mm) | --- ### 2. Key Characteristics * **Shielded Construction:** The "-R" suffix often indicates RoHS compliance and the physical build is shielded to minimize Electro-Magnetic Interference (EMI). This is crucial for sensitive circuits where noise can disrupt signals. * **Low Core Loss:** It uses materials optimized for high-frequency switching, reducing energy wasted as heat. * **Rugged Design:** The "3P" designation refers to the physical footprint and power handling capability, making it suitable for industrial-grade environments. --- ### 3. Common Applications This inductor is typically used in circuits requiring power regulation and filtering: 1. **DC-DC Converters:** Used as the energy storage element in buck (step-down) or boost (step-up) converters. 2. **Filtering:** Used in input/output filters to smooth out voltage ripples in power supplies. 3. **Battery Powered Systems:** Because of its efficiency, it is often found in portable electronics. 4. **Computer Peripherals:** Used on motherboards or expansion cards for local voltage regulation. --- ### 4. Circuit Symbol Representation In a schematic, this part is represented as an inductor. ```circuit L1 (33uH) ---( ( ( ( --- CTX33-3P-R ```