The **CTX150-5-52LP-R** is a high-performance power inductor, part of the Octa-Pac® PLUS series manufactured by **Eaton (formerly Coiltronics)**. It is specifically designed as a dual-winding toroidal inductor, which allows it to be used as a standard inductor, a coupled inductor, or a 1:1 transformer. ### 1. Technical Specifications The following table summarizes the key electrical and physical characteristics of this component: | Parameter | Specification | | :--- | :--- | | **Inductance (Parallel)** | 150 µH ±20% | | **Current Rating (Isat)** | ~1.69 Amperes | | **DC Resistance (DCR)** | ~0.187 Ohms (Parallel) | | **Core Material** | Powder Iron (Material -52) | | **Operating Temperature** | -40°C to +125°C | | **Mounting Type** | Surface Mount (SMD) | | **Package / Case** | Octa-Pac® Size 5 | --- ### 2. Key Features and Construction * **Dual Winding Design:** It consists of two identical windings. Depending on how the pins are connected on the PCB, the user can achieve different inductance and current values. * **Toroidal Geometry:** The doughnut-shaped core helps contain the magnetic flux, resulting in lower **Electromagnetic Interference (EMI)** compared to traditional bobbin inductors. * **Iron Powder Core (-52):** The "52" in the part number refers to the core material. This material is optimized for high-frequency power conversion, offering high saturation flux density and low core losses at frequencies up to 500 kHz. * **Low Profile (LP):** The "LP" designation indicates a low-profile height, making it suitable for compact electronics like laptops or handheld devices. --- ### 3. Common Applications Due to its versatile dual-winding nature, the CTX150-5-52LP-R is typically used in: 1. **SEPIC Converters:** Used as a coupled inductor to maintain energy transfer between input and output. 2. **DC-DC Converters:** Acts as a filter inductor in Buck or Boost topologies. 3. **Common Mode Chokes:** Used to filter out noise in power lines. 4. **Isolation Transformers:** Provides 1:1 voltage transformation for signal or low-power isolation. --- ### 4. Terminal Connection Guide | Configuration | Connection Method | Resulting Properties | | :--- | :--- | :--- | | **Series** | Connect Pin 2 to Pin 3 | Higher Inductance, Lower Current | | **Parallel** | Connect 1 to 4, and 2 to 3 | Lower Inductance, Higher Current |