The **CTX100-2-52LP-R** is a high-performance, surface-mount (SMT) power inductor belonging to the **OCTA-PAC®** series, manufactured by Eaton (formerly Cooper Bussmann/Coiltronics). --- ### 1. Technical Specifications The part number itself encodes specific technical characteristics. Here is a breakdown of the key parameters: | Parameter | Specification | | :--- | :--- | | **Inductance** | 100 µH | | **Tolerance** | ±20% | | **Current Rating (Idc)** | ~0.76 Amps (Typical) | | **DC Resistance (DCR)** | ~0.441 Ohms (Max) | | **Core Material** | Iron Powder (Material -52) | | **Package Size** | Size 2 (Low Profile) | | **Operating Temp** | -40°C to +125°C | --- ### 2. Design Characteristics This component is unique due to its **dual-winding** construction, which offers significant flexibility in circuit design. * **Dual Windings:** It consists of two separate windings wrapped around a single toroid core. These can be connected in **series** (to increase inductance) or in **parallel** (to increase current capacity). * **Toroidal Core:** The use of a toroid (doughnut shape) ensures high efficiency and low electromagnetic interference (EMI) because the magnetic field is mostly contained within the core. * **Material -52:** This specific iron powder mix is optimized for high-frequency applications, providing low core losses in power conversion circuits. * **Low Profile (LP):** The "LP" suffix indicates a reduced height, making it ideal for compact electronic assemblies where vertical space is limited. --- ### 3. Common Applications The CTX100-2-52LP-R is typically used in power management stages of industrial and consumer electronics: 1. **DC-DC Converters:** Acts as an energy storage element in buck, boost, or SEPIC converters. 2. **EMI Filtering:** Used as a common-mode or differential-mode choke to filter out high-frequency noise. 3. **Isolation:** Can function as a 1:1 transformer for signal isolation or gate drive circuits. 4. **Battery Powered Systems:** Often found in handheld devices due to its small footprint and efficiency. --- ### 4. Comparison: Series vs. Parallel Connection Because this is a dual-winding inductor, your circuit layout determines its final performance: | Connection Type | Inductance (Total) | Current Capacity | | :--- | :--- | :--- | | **Parallel** | 100 µH | Higher Current (I) | | **Series** | 400 µH | Lower Current (I/2) | ---