The **CTM3F-R15J** is a high-performance, molded shielded inductor commonly used in power management and signal filtering circuits. It is part of the CTM3F series, known for its reliability in demanding electronic environments. ### 1. Technical Specifications Below are the primary electrical and physical characteristics of the CTM3F-R15J: | Parameter | Specification | | :--- | :--- | | **Inductance** | 0.15 µH | | **Tolerance** | ±5% (indicated by the 'J' suffix) | | **Case Style** | Molded Shielded (Axial leads) | | **DC Resistance (Max)** | 0.030 Ohms | | **Current Rating (Idc)** | ~2,500 mA (approximate depending on temperature) | | **Core Material** | Phenolic or Ferrite (depending on specific frequency tuning) | | **Operating Temperature** | -55°C to +125°C | --- ### 2. Part Number Breakdown Understanding the nomenclature helps in identifying its specific properties: * **CTM3F**: Series identifier (Molded, Shielded Inductor). * **R15**: Represents the inductance value. "R" acts as a decimal point, meaning **0.15**. The unit is in microhenries (µH). * **J**: Represents the tolerance level. **J = ±5%**. --- ### 3. Key Electronic Features * **Magnetic Shielding:** The molded construction provides magnetic shielding, which minimizes Electromagnetic Interference (EMI) and prevents the inductor from affecting nearby sensitive components. * **Environmental Protection:** The epoxy molded casing provides high resistance to moisture, salt spray, and mechanical shock, making it suitable for military or industrial grade applications. * **High Q Factor:** Designed to maintain low loss at high frequencies, which is essential for RF (Radio Frequency) applications. --- ### 4. Common Applications Due to its shielding and high current capacity relative to its size, it is used in: 1. **Switching Power Supplies:** For ripple current filtering. 2. **RF Circuits:** As a choke or part of a LC tuning network. 3. **Telecommunications:** For signal decoupling and noise suppression. 4. **Test Equipment:** Where precision and low EMI are required.